Patents by Inventor Mohammad A. Chaudhari

Mohammad A. Chaudhari 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).

  • Polyamic acids and polyimides
    Patent number: 5614606
    Abstract: Polyamic acids and corresponding polyimides are prepared by reacting polyfunctional amines, aromatic polyfunctional anhydrides or esters thereof, and allyl-nadic anhydride end capping agents, the resulting products exhibiting excellent properties and being suitable for the preparation of prepregs, composites, adhesives, coatings, and the like.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: March 25, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Mohammad A. Chaudhari, John J. King, Byung Lee
  • Polyamic acids and polyimides
    Patent number: 5606013
    Abstract: Polyamic acids and corresponding polyimides are prepared by reacting phenylindane diamines, aromatic polyfunctional anhydrides or esters thereof, and nadic anhydride or allylnadic anhydride end capping agents, the resulting products exhibiting excellent properties and being suitable for the preparation of prepregs, composites, adhesives, coatings, and the like.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: February 25, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Mohammad A. Chaudhari, John J. King, Byung Lee
  • Stable imide-containing composition from diaminophenylindane-bis-imide, amine and alkenyl phenol or ether
    Patent number: 4749767
    Abstract: Imide-containing mixture and prepolymer compositions resulting from the combination of diaminophenylindane-bis-maleimide together with amines, alkenyl phenols, alkenyl phenol ethers or mixtures thereof, said compositions being heat curable and suitable for the preparation of prepregs, composites, adhesives, molded articles, coatings, and the like.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: June 7, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Mohammad A. Chaudhari, John J. King
  • Stable imide-containing composition from diamino phenyl indane-bis-maleimide and alkenyl phenol
    Patent number: 4689378
    Abstract: Imide-containing mixture and prepolymer compositions resulting from the combination of diaminophenylindane-bis-maleimide together with amines, alkenyl phenols, alkenyl phenol ethers or mixtures thereof, said compositions being heat curable and suitable for the preparation of prepregs, composites, adhesives, molded articles, coatings, and the like.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: August 25, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: Mohammad A. Chaudhari, John J. King