Patents by Inventor Thomas H. Marman

Thomas H. Marman 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).

  • Method of preparing amino alcohols
    Patent number: 5053545
    Abstract: A method of preparing an amino alcohol of the formula ##STR1## where R.sub.1 is H, lower alkyl or R.sub.2, R.sub.2 is R.sub.3 CHOH in which R.sub.3 is H, alkyl or aryl. R.sub.3 preferably is hydrogen, lower alkyl or monocyclic aryl such as phenyl. The inventive method involves the reaction of halonitroalcohol with hydrogen in the presence of methanol, a suitable buffering agent such as ammonia, and a hydrogenation catalyst to form amino alcohol salt, neutralizing the amino alcohol salt, and recovering the resultant amino alcohol.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: October 1, 1991
    Assignee: Angus Chemical Company
    Inventors: Thomas H. Marman, Vincent Nocito