Patents by Inventor Angelo Nora

Angelo Nora 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).

  • Thermotropic liquid-crystalline aromatic coplymers
    Patent number: 5233013
    Abstract: Liquid-crystalline, completely aromatic copolyesters are disclosed, which are endowed with a heat stability not lower than 350.degree. C., and are constituted by a succession of repeatitive units containing: ##STR1## wherein A and B, which can be either equal to, or different, from, each other, can be either --0-- or and one of the following moieties: ##STR2## in which Ar can be 1,4-phenylene, 2-monosubstituted-1,4-phenylene or 4,4'-diphenylene.Also copolyesters also containing amidic bonding groups are disclosed.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: August 3, 1993
    Assignee: Enichem S.p.A.
    Inventors: Fabrizio Parodi, Angelo Nora
  • Thermotropic liquid-crystalline aromatic copolymers
    Patent number: 5155204
    Abstract: Liquid-crystalline, completely aromatic copolyesters are disclosed, which are endowed with a heat stability not lower than 350.degree. C., and are constituted by a succession of repetitive units containing: ##STR1## wherein A and B, which can be either equal to, or different, from, each other, can be either --O-- or --CO-- and one of the following moieties: ##STR2## in which Ar can be 1,4-phenylene, 2-monosubstituted-1,4-phenylene or 4,4'-diphenylene.Also copolyesters also containing amidic bonding groups are disclosed.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: October 13, 1992
    Assignee: Enichem S.p.A.
    Inventors: Fabrizio Parodi, Angelo Nora