Patents by Inventor Mark A. Tice

Mark A. Tice 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).

  • Process for producing tri-N-butylphosphorotrithioite
    Patent number: 5183916
    Abstract: Tri-n-butylphosphorothioite is produced on a continuous or semi-continuous by simultaneously adding phosphorus trichloride and butylmercaptan to a reaction vessel at a rate such that an excess of butylmercaptan is present and allowing the resultant mixture to react at a temperature of from about 120.degree. C. to about 150.degree. C. One or more reactors may be employed. This process is particularly advantageous for safety reasons and produces high quality phosphite which may be oxidized without purification to produce S,S,S-tri-n-butylphosphorotrithioate.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: February 2, 1993
    Assignee: Miles Inc.
    Inventors: Ara H. Zakaryan, Peter E. Newallis, Mark A. Tice