- Written by: William H. Dresher
- Organization: United States Patent Office (patent assigned to Union Carbide Corporation)
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3 results for “Union Carbide Corporation”
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Company document · Union Carbide documents · June 14, 1966
U.S. Patent 3,256,106, Sulfur Treated Asbestos, W. H. Dresher and H. F. Reichard, assigned to Union Carbide (1966)
U.S. Patent 3,256,106, issued June 14, 1966, describes a process of treating dry chrysotile asbestos, especially Coalinga-type, with sulfur dioxide gas to reduce discoloration in vinyl-asbestos tile mixtures. It gives test tables on sulfur content,…
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Company document · Union Carbide documents · January 14, 1969
U.S. Patent No. 3,421,975, Reversible Flocculation and Redispersion of Chrysotile Asbestos (Woolery and Dresher, assignors to Union Carbide) (1969)
…1965, and issued January 14, 1969, to Union Carbide Corporation as assignee. It describes a process for flocculating chrysotile asbestos dispersed in water by raising the pH to 6.0-10.5, filtering and drying it…
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Company document · Union Carbide documents · November 5, 1968
U.S. Patent 3,409,499, Dresher and Naumann, Chrysotile Asbestos Fiber Dispersion Including Monocarboxylic Acid (1968)
…filed May 14, 1965, assigned to Union Carbide Corporation. It describes a process for making stable water dispersions of finely divided chrysotile asbestos by adding a monocarboxylic acid and applying high-speed shearing forces. It gives…