us patent of process gypsum

Patent US3573947 - Accelerator for gypsum plaster - Google PatentsApr 6, 1971 . United States Patent 3,573,947 A'CCELERATGR FOR GYPSUM . Patent 1,460,396 disclosed a process in which the accelerator was patent of process gypsum,Patent US3359146 - Method of producing gypsum articles having .More particularly, this invention relates to a process of producing gypsum ... UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No.United States v. United States Gypsum Co. :: 333 U.S. 364 (1948 .In 1912, United States Gypsum received as assignee a patent issued to one Utzman, No. 1,034,746, covering both process and product claims on board with.

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U.S. v. U.S. Gypsum (factual summary)

In 1912, United States Gypsum received as assignee a patent issued to one Utzman, No. 1,034,746, covering both process and product claims on board with.

Process for preparing alpha calcium sulfate semi-hydrate from .

United States Patent 0. 1 . sure calcining process in which the gypsum rock is heated in open . quired, the alpha semihydrated gypsum can be used. The.

United States v. United States Gypsum Co., 67 F. Supp. 397 .

The corporate defendants are: United States Gypsum Company (hereinafter referred to as .. 1,029,328 (a process patent), and under a third Utzman patent No.


UNITED STATES GYPSUM COMPANY, a corporation, Plaintiff, v. .. This patent discloses water cooled apparatus and process for making mineral wool.


Prior Publication US 2015/0093309 A1, Apr. 2, 2015 . A method of recycling of by-products of Merseberg process and Solvay process in an . i. treating the brine with soda ash distiller waste for desulphatation of brine to obtain gypsum;.

Serious Materials' Elegant Process Greens Gypsum Drywall » Green .

Serious Materials' Elegant Process Greens Gypsum Drywall. December 17th, 2008 by Eric Lane . Serious Materials owns U.S. Patent Application Pub. No.

Phosphogypsum Purification - AIChE-Central Florida

Two“ general process variations for the purification . of-phosphogypsum are ... for Purification of Gypsum“, U. S. Patent 4,424,196 to. USG Corporation (January.

List of new Gypsum patents & technologies

Gypsum - full listing of recent patents, inventions and new technologies and a free . Partially continuous countercurrent process for converting gypsum to ammonium sulfate and calcium carbonate .. United States Gypsum Company. 04/21/16

A biological process for the reclamation of flue gas desulfurization .

A biological process for the reclamation of flue gas desulfurization gypsum using mixed .. Sonta, H. and Shiratori, T. (1988), US Patent Number 4,931,262. 28.

Method of producing calcium sulfate alpha-hemihydrate - National .

Nov 25, 2003 . United States Patent 6652825 . US Patent References: . 4842842, Process for producing α-form gypsum hemihydrate, 1989-06-27, Kudo.

Recovery of Sulphur from Waste Gypsum - IMWA - International .

Oct 23, 2009 . reacted with SO2 in the PIPco processes to form elemental sulphur. Sulphur with the purity . The basic steps of the sulphur recovery process from gypsum are: • Reduction of gypsum to ... US Patent. 5,057,298, assigned to.

Inequitable Conduct in Retrospective - Digital Commons .

of inequitable conduct in the patent process is a controversial and prominent . Counsel, Office of the Solicitor, U.S. Patent & Trademark Office, for his assistance. .. See Gypsum, 352 U.S. at 457 ("The rule is an extension of the equitable.

USG Patent Information | USG

For a more complete list of USG's U.S. patents and applications, and those of its subsidiaries, United States Gypsum Company and USG Interiors LLC, please.

Patent US5198052 - Method of reshaping a gypsum board core and .

In the typical process the gypsum board is made face side down. The face .. An example of pressure application to a board surface is found in U.S. Pat. Nos.

Intrinsic Kinetics of Gypsum and Calcium Sulfate Anhydrite .

May 3, 2011 . Intrinsic Kinetics of Gypsum and Calcium Sulfate Anhydrite . Complementary quantitative modeling of the dissolution process was .. Patents only search . U.S. Energy Department awards $40 million to speed nuclear waste.

Chapter 1 - Introduction to Cement Production

Typical Manufacturing Processing Flow Chart; Newer Manufacturing Process Flow Chart . Gypsum plaster, common lime, hydraulic limes, natural pozzolana, and . to the cement by Joseph Aspdin of Leeds, England who obtained a patent for . The first cement manufactured in the United States was produced in 1871 by.

Fractography off cast gypsum - Mori - 1982 - Australian Dental .

High strength calcined gypsum and process of manufacturing same. US Patent 1, 901, 051, 1933. 17. Hoggatt GA. Method of producing gypsum plaster.

Canada - Gypsum industry news from Global Gypsum

Canada starts anti-dumping case against US gypsum wallboard . The NuGyp process has patents granted or pending in over 70 countries worldwide and.

Double decomposition of gypsum and potassium chloride catalysed .

. various crystallisation processes and some double decomposition reactions between inorganic salts. . In aqueous system containg no ammonia, gypsum and potassium chloride . Several patent applications for this use of ammonia have been made [ 3 - 5 ] , but few kinetic data have been published. ... 5 U.S. Patent No.

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