Patents by Inventor Melvin Ira Kohan

Melvin Ira Kohan 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).

  • Composition of oxymethylene polymer and amide oligomers
    Patent number: 3960984
    Abstract: A composition with high thermal stability possessing superior resistance to mold and die deposits comprises (A) an oxymethylene homopolymer or copolymer and (B) 0.01 to 10% by weight of an amide oligomer having a molecular weight of 800 to 10,000 and wherein the active ends (based upon either amine or acid terminal groups) of the oligomer constitute no more than 0.02 mole % of the formaldehyde segments in the oxymethylene polymer.
    Type: Grant
    Filed: April 16, 1974
    Date of Patent: June 1, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Melvin Ira Kohan