- Written by: Harold F. Reichard
- Organization: United States Patent Office (patent assigned to 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,…