Patents by Inventor Clifford R. Boldt

Clifford R. Boldt 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 preparing oxymethylene polymers using boron trifluoride in admixture with an inert gas
    Patent number: 4692505
    Abstract: Oxymethylene polymers are prepared by the continuous polymerization of trioxane using as a catalyst a blend of boron trifluoride gas and nitrogen gas. Oxymethylene polymers are used in the manufacture of plumbing fixtures, pipes, automobile body parts and a variety of other articles.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: September 8, 1987
    Assignee: Celanese Engineering Resins, Inc.
    Inventors: Clifford R. Boldt, Richard K. Greene