Patents by Inventor John P. Gavula

John P. Gavula 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).

  • Blends of poly(aryl ketone) and a polyetherimide
    Patent number: 5110880
    Abstract: Described herein is a molding composition comprising a blend of a select poly(aryl ketone) and a polyetherimide. These blends have an improved ultimate use temperature and stress crack resistance.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: May 5, 1992
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Lloyd M. Robeson, John P. Gavula
  • Blends of a poly(amide imide) and a poly(aryl ether ketone)
    Patent number: 5079308
    Abstract: Described are blends of a poly(amide imide) and a poly(aryl ether ketone) and, optionally, a poly(arylene sulfide). Three blends exhibit improved solvent resistance and hydrolytic stability.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: January 7, 1992
    Assignee: Amoco Corporation
    Inventors: James E. Harris, John P. Gavula
  • Wear resistant poly (aryl ether ketone) polyimide blends
    Patent number: 4965310
    Abstract: Blends comprising(A.) at least one poly(aryl) ether ketone), and(B.) at least one polyimide having repeating units of the formula ##STR1## wherein R.sup.1 is a substituted or unsubstituted tetravalent radical having benzenoid unsaturation, andR.sup.2 is a substituted or unsubstituted divalent group having aromatic unsaturation which is essentially free of (i) backbone ether oxygen bonded directly to the aromatic ring forming an imide linkage and (ii) amide linkages bonded through carboxyl groups bonded to the aromatic ring forming an imide linkage. The blends exhibit good melt processability and wear resistance greater than the individual blend components.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: October 23, 1990
    Assignee: Amoco Corporation
    Inventors: James E. Harris, John P. Gavula