Patents by Inventor Harry C. Fromuth

Harry C. Fromuth 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).

  • Ultraviolet resistant glutarimide
    Patent number: 5585423
    Abstract: Polymers of (N-lower alkyl)dimethylglutarimide or (N-hydrogen)dimethylglutarimide are resistant to surface crazing, molecular weight degradation and yellowing on exposure to ultraviolet light, by inclusion of a hindered amine stabilizer.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: December 17, 1996
    Assignee: Rohm and Haas Company
    Inventors: Leslie A. Cohen, Darnell DeGraff, Harry C. Fromuth, Theodore D. Goldman
  • Imide polymers
    Patent number: 5264483
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: November 23, 1993
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Imide polymers
    Patent number: 5004777
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: April 2, 1991
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Imide polymers
    Patent number: 4954574
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: September 4, 1990
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Imide polymers
    Patent number: 4727117
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties oif imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: February 23, 1988
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Acrylate rubber modification of aromatic polyesters
    Patent number: 4264487
    Abstract: Compositions comprised of synergistic amounts of aromatic polycarbonate, acrylate-based core-shell polymer, and aromatic polyester are disclosed.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: April 28, 1981
    Assignee: Rohm and Haas Company
    Inventors: Harry C. Fromuth, Kenneth M. Shell
  • Thermoplastic polyesters
    Patent number: 4180494
    Abstract: High impact and solvent resistant composition comprising (A) about 25 to 95 percent by weight of an aromatic polyester, (B) about 1 to 8 percent by weight of an aromatic polycarbonate, and (C) and balance to make 100% of a coreshell polymer having a butadiene-based core. Preferably the composition also includes about 1 to 150 parts by weight of glass fiber reinforcement per 100 parts of (A), (B), and (C).
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: December 25, 1979
    Assignee: Rohm and Haas Company
    Inventors: Harry C. Fromuth, Kenneth M. Shell