Patents by Inventor John A. Vanderlip

John A. Vanderlip 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 for increasing the molecular weight of polyamides and polyesteramides
    Patent number: 4672094
    Abstract: A process is described for increasing the molecular weights of thermoplastic polyamides and polyesteramides by fluxing and homogenizing the subject polymers which have been prepared by the reaction of an organic diisocyanate and a dicarboxylic acid with an effective amount of an organic diisocyanate reagent at a temperature of at least about 150.degree. C.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: June 9, 1987
    Assignee: The Dow Chemical Company
    Inventors: Robert G. Nelb, II, Kemal Onder, Karl W. Rausch, John A. Vanderlip