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US2132902A - Flotation process - Google Patents

flotation ores process ore negatively charged Prior art date 1934-06-14 Legal status (The legal status is an assumption and is not a legal conclusion Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed) Expired - …

US Patent for Flotation process - patentsjustia

Justia Patents US Patent for Flotation process Patent (Patent # 4,246,096) Flotation process Mar 5, 1979 A method for separating copper sulphides from lead sulphides contained in particulate copper lead sulphide concentrates by a flotation process in which an aqueous alkali metal silicate-alkali metal dichromate reagent solution is added in

US Patent for Flotation process Patent (Patent # 5,879,542

Disclosed is a process for the flotation of a mineral concentrate comprising the steps of forming an aqueous slurry of a milled mineral ore containing particles of a desired mineral species and adding a flotation reagent which causes a desired variation in the flotation tendency of the desired mineral species present within the slurry so as to increase the efficiency of separation of that mineral species from the …

Patent US5073253 Froth level measurement Google Patents

Patent US5073253 Froth level measurement Google Patents #10220923208043 – Froth Flotation Flow Chart, with 34 Similar files Patent US5073253 Froth level measurement Google Patents #10220923208043 – Froth Flotation Flow Chart, with 34 Similar files Flow Chart Flow Chart for 8 Bit Vedic Multiplier Cross Functional Business Process Flow

US4514292A - Froth flotation process - Google Patents

In the process of separating copper and molybdenum minerals from their associated gangue by subjecting an aqueous pulp of porphyry copper ore to a froth flotation process in the pressence of a gangue depressant and recovering the separated minerals as a flotation froth concentrate, the improvement wherein the depressant is a water-soluble

History of Flotation Patents - Mineral Processing & Metallurgy

Meanwhile Alcide Froment, in Italy, had got hold of the bubble idea, which is the real basis of the flotation process as it is understood today He invented his method in 1901 and filed his claim for a British patent on June 9, 1902 This patent was duplicated in Italy, but not …

US Patent # 4,362,552 Froth flotation of ores - Patents

Froth flotation of ores Abstract Beneficiation of metallic ores selected from the group of zinc, bismuth, cobalt, nickel, titanium, zirconium, thorium, chromium, molybdenum, wolfram, and uranium, by froth flotation process using commercial amines in conjunction with oxalic acid or alkali oxalates to obtain pure concentrates of said metal values comprises; adding to a water suspension of

Analytics for US Patent No 4488959, Scheelite flotation

A process for separating scheelite from gange wherein the ore is ground with 04 to 10 grams of alkali metal carbonate per kg of ore, forming a pulp and removing sulfide minerals from pulp liquor

Patent process overview | USPTO

A patent application is subject to the payment of a basic fee and additional fees that include a search fee, an examination fee, and issue fee Depending on your application, there may also be excess claims fees Fees vary depending on the type of patent application that you submit

Flotation process - HOECHST AG - Free Patents Online

US Patents/Apps Other SEARCH; RESEARCH; Title: Flotation process United States Patent 2950818 Inventors: August, Moeller Application Number: US56819556A Publication Date: 08/30/1960 Frothing agents for use in froth flotation processes: 1954-08-24: 2611485: Frothing agents for flotation of ores:

Patent Report: | US9862462 | Rifle flotation device

A firearm flotation device for providing buoyancy to a firearm is disclosed The device includes a buoyant body with a first buoyant body portion and a second buoyant body portion, wherein the first buoyant body portion includes an interlocking tongue and the second buoyant body includes an interloc Patent Images process operations

35 US Code § 271 - Infringement of patent | US Code

(g) Whoever without authority imports into the United States or offers to sell, sells, or uses within the United States a product which is made by a process patented in the United States shall be liable as an infringer, if the importation, offer to sell, sale, or use of the product occurs during the term of …

Enhanced flotation reagents for beneficiation - US Patent

Enhanced flotation reagents for beneficiation of phosphate ores Abstract An improved phosphate ore beneficiation process is disclosed which comprises the employment of a novel combination of surfactants which, when combined with fatty acid collectors, enhances recovery of phosphate minerals in anionic flotation, even when used in plant water

Can You Patent a Process: Everything You Need to Know

When one patents a business method or, in some cases, a computer program, this is a form of patenting a process It's now possible to patent subscription-based services, targeted advertising networks, online auction sites, portal sites, email systems, and even discussion forums

FLOTATION OF URANIUM (Patent) | DOepatents

United States Language: English Subject: PATENTS; DETERGENTS; FLOTATION; FOAMS; ORGANIC ACIDS; PERFORMANCE; RECOVERY; SALTS; SEPARATION PROCESSES; URANIUM ORES Full Text; Patents / Patent Applications; Search for the full text at the US Patent and Trademark Office; Have feedback or suggestions for a way to improve these results?

Method (patent) - Wikipedia

Method (patent) The European Patent Convention does not mention method patents (called process patents) so prominently, and the same applies to the TRIPS Agreement The prime characteristic of process patents in these treaties is that "the protection conferred by the patent shall extend to the products directly obtained by such process" Art

Sample Patents - Neustel Law Offices

DISCLAIMER: Every invention and patent application is different Prior results don’t guarantee future success or a similar outcome Results depend upon a variety of factors unique to each representation Sample Patents Below are some sample patents written and/or prosecuted by Neustel Law Offices for our clients illustrating the various types of technologies we work with […]

A Brief History of the Patent Law of the United States

The United States Constitution, on which US Patent Law depends, was drafted at the height of the Industrial Revolution at a time when the impact of patents was first being seriously felt in England Interestingly, while the Constitution was being drafted in Philadelphia, the Constitutional Convention apparently adjourned one afternoon to watch John Fitch’s steam boat undergo trials on the Delaware …

Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic This is used in mineral processing, paper recycling and waste-water treatment industries Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century

An Overview of the US Patent Process - IPWatchdog

Mar 15, 2014 · The patent process actually starts well before you file a patent application or seek assistance from a patent attorney Every patent application starts with an invention, and every invention

Flotation process - HOECHST AG - Free Patents Online

US Patents/Apps Other SEARCH; RESEARCH; Title: Flotation process United States Patent 2950818 Inventors: August, Moeller Application Number: US56819556A Publication Date: 08/30/1960 Frothing agents for use in froth flotation processes: 1954-08-24: 2611485: Frothing agents for flotation of ores:

US Patent # 4,457,776 Process for the removal of arsenic

Process for the removal of arsenic compounds from tungsten or molybdenum concentrates Abstract A process for the removal of arsenic compounds from tungsten and/or molybdenum concentrates by selective extraction, characterized in that the concentrates are extracted with an aqueous solution of a ferric compound of a pH below 25 and a temperature of at least 60degree

Patent Process Requirements | Patents and Their Use

Jan 14, 2019 · Patent Process Requirements In a recent post, I explained what a patent was and why it was so important for entrepreneurs and inventors A patent is a property right granted by the government to the inventor of a machine, process, composition of matter, or article of manufacturing

Patents and patent applications | Cavitation Technologies

Jul 27, 2010 · Patents & Patent Applications Issued July 27, 2010 – US patent 7,762,715 – Cavitation Generator by Roman Gordon, Igor Gorodnitsky & Maxim Promtov Issued October 25, 2011 – US patent 8,042,989 – Multi-Stage Cavitation Device by Roman Gordon, Igor Gorodnitsky & Maxim Promtov

Patent Report: | US9868495 | Controllable water floatation

The present invention relates to a water floatation garment, and in particular, to such a swimming garment incorporating a fillable bladder and electronics provided to identify emergency situation such as drowning based on sensed data that causing the garment to trigger the fillable bladder to inflate allowing a user to float to surface therein preventing a drowning

Patent Process Requirements | Patents and Their Use

Jan 14, 2019 · Patent Process Requirements In a recent post, I explained what a patent was and why it was so important for entrepreneurs and inventors A patent is a property right granted by the government to the inventor of a machine, process, composition of matter, or article of manufacturing

The Patent Application Process

The Examination Process It takes approximately 18 months to two years for the USPTO to process a patent application On the average, the USPTO takes two actions during the processing period Usually, the patent examiner determines that the claims are too broad and requests that the applicant amend the claims to more narrowly define the invention

How Much Does a Patent Cost? | LegalZoom

The cost to apply for a patent is only part of the total patent fees that inventors must consider: revising, prosecuting, issuing and maintaining a patent all add to the cost You can do a lot to keep the cost to file a patent down and much of it you can do before you ever talk to a lawyer

Three Types of Patents Issued in the United States (By the

Design Patents While a utility patent protects the utility or function of a product, a design patent protects its aesthetic appearance Design patents can be issued for the appearance, design, shape or general ornamentation of an invention

Life Sciences Patents - americanconference

Perfect Your Patent Prosecution Strategies and Master the Patent Application Process in the US and Around the World ACI’s 17th Global Summit on Life Sciences Patents returns to New York in May to provide practical insights on how to maximize your patent term and develop strategies to enhance protections for your patent portfolio

Method (patent) - Wikipedia

Method (patent) The European Patent Convention does not mention method patents (called process patents) so prominently, and the same applies to the TRIPS Agreement The prime characteristic of process patents in these treaties is that "the protection conferred by the patent shall extend to the products directly obtained by such process" Art

Process patent blocks importation of product - OC Patent

Aug 08, 2016 · Under §271(g), a patent is infringed by someone who without authority imports into the United States or offers to sell, sell, or uses within the United States a product which is made by a process patented in the United States shall be liable as an infringer, if the importation, offer to sell, or the use of the product occurs during the term of

Patent Flowchart - Inventor Basics

The process begins with the filing of a patent application and hopefully ends with the issuance of a granted patent; however, that isn’t always the final outcome It would be reasonable to think that the examination process should only take a couple of months, but the truth is that the patent office has quite a backlog of pending patents and the process could take quite a long time

How to File for a Patent | Inc

How to File for a Patent: The Types of Patent Applications Bringing the patent process into the 21st Century, the PTO has established an Electronic Filing System letting you file applications over the Web You can also still file paper forms and mail them to the Commissioner of Patents

US Patent History - Creation of the US Patent system

US PATENT SYSTEM Prior to the Patent Act of July 4, 1836, patents were issued by name and date rather than number The Patent Office had already issued nearly 10,000 patents, when a fire destroyed many of the original records in December of 1836 Using …

Differences between US and European patents (in Patents

Rights conferred by a granted patent A US patent is a property right which is enforceable in the whole territory of the USA It allows the patent holder to prevent anyone from making, using or selling in the USA the patented invention This is because the US patent law (35 US Code) is a federal statute

Patents - Canadaca

A patent is an exclusive right granted for an invention, such as a product or a process Learn about, search for or apply for registration Writing your patent application and general information about the patent process Canadian patents search Search for laid-open applications and patents granted since August 1978 via the Canadian Patent

FPO IP Research & Communities

Additional fields are available via our API for commercial use Please inquire if you would like access to these, and other, fields: Assignee Count, Claim Count, Expiration Date (with term extensions), Family Member Count, Image Count, Inventor Count, Priorities Count, Reference Count, Word Count, Assignment Count