Patents by Inventor Harry D. Gregg, Jr.

Harry D. Gregg, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Treatment of the waste from the production of tertiary butyl amine to recover sodium sulfate and methyl or sodium formate
    Patent number: 4131642
    Abstract: Isobutylene, hydrogen cyanide and sulfuric acid are reacted to produce tertiary butyl formamide, which is hydrolyzed by sodium hydroxide to produce tertiary butyl amine. The tertiary butyl amine is removed by vaporization and the residue is treated with sulphuric acid and methanol and is distilled to recover formate values as methyl formate or sodium formate. There is additionally recovered crystalline sodium sulfate and a water immiscible yellow organic phase.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: December 26, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Ralph Miller, Harry D. Gregg, Jr.