Patents by Inventor Lawrence Chapoy

Lawrence Chapoy 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 polymers
    Patent number: 5017678
    Abstract: Melt-formable thermotropic liquid crystalline polymers containing groups derived from terephthalic acid and a mixture of phenyl hydroquinone, 2-(.alpha.-phenylisopropyl) hydroquinone and, if desired, 2,5 bis (.alpha.-phenylisopropyl) hydroquinone.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 21, 1991
    Assignee: Montedison S.p.A.
    Inventors: Umberto Giannini, Alfredo Coassolo, Marco Foa', Giampiero Sabarino, L. Lawrence Chapoy
  • Thermotropic liquid-crystalline aromatic, polyesters
    Patent number: 5015721
    Abstract: Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxy aromatic acid having the formula:HOOC--Ar.sub.1 --O--Ar.sub.2 --COOH (1)wherein Ar.sub.1 and Ar.sub.2 are aromatic radicals from aromatic diols, and, possibly, from other diacids and/or hydroxy acids.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: May 14, 1991
    Assignee: Montedison S.p.A.
    Inventors: Giorgio Gabrielli, Mauro Maritano, Giuseppe Motroni, L. Lawrence Chapoy
  • Liquid-crystalline, thermotropic aromatic polyesters
    Patent number: 5013819
    Abstract: Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinone mono- and possibly di-substituted with aralkyl groups.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: May 7, 1991
    Assignee: Montedison S.P.A.
    Inventors: Alfredo Coassolo, Marco Foa', L. Lawrence Chapoy
  • Termotropic liquid-crystalline aromatic polyester from hydroquinone/substituted hydroquinone mixture
    Patent number: 4985533
    Abstract: Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxylic aromatic acid and from mono- and di-substituted (1-phenyl-ethyl)-hydroquinones in admixture with hydroquinone, and/or hydroquinones substituted with halogen or alky, aryl or cycloalkyl groups.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: January 15, 1991
    Assignee: Montedison S.p.A.
    Inventors: Alfredo Coassolo, L. Lawrence Chapoy, Marco Foa, Giampiero Sabarino
  • Thermotropic liquid crystalline aromatic polyester from 3,3'-diphenyl-4,4'- d
    Patent number: 4978735
    Abstract: Thermotropic liquid crystalline aromatic polyesters of 3,3'-diphenyl-4,4'-dihydroxydyphenyl containing units derived from mono-substituted hydroquinones in amounts over 10% by moles with respect to the total of the aromatic diols.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 18, 1990
    Assignee: Himont Italia S.r.l.
    Inventors: L. Lawrence Chapoy, Alfredo Coassolo, Marco Foa
  • Liquid-crystalline, thermotropic aromatic polyester from hydroquinone mixture
    Patent number: 4966957
    Abstract: Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinones substituted with aryl, aralkyl and aroyl groups, and from phenoxy-hydroquinone.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 30, 1990
    Assignee: Montedison S.p.A.
    Inventors: Francesco Casagrande, Marco Foa, Andrea Gardano, L. Lawrence Chapoy
  • Thermotropic liquid crystalline polyester from 2,5-dihydroxybenzophenone
    Patent number: 4952661
    Abstract: Thermotropic liquid crystalline polyesters which can be processed in the molten state containing moieties derived from a dicarboxylic aromatic acid and 2,5-dihydroxybenzophenone eventually in a mixture with a substituted hydroquinones.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: August 28, 1990
    Assignee: Montedison S.p.A.
    Inventors: Marco Foa', Francesco Casagrande, Alfredo Coassolo, L. Lawrence Chapoy
  • Thermotropic liquid-crystalline aromatic polyesters of substituted 4,4'-dihydroxy-diphenylene
    Patent number: 4923955
    Abstract: Thermotropic liquid-crystalline aromatic polyesters of 4,4'-dihydroxy-diphenyl substituted with a halogen or with an alkyl, cycloalkyl, aryl, aralkyl, keto or ether radical.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: May 8, 1990
    Assignee: Montedison S.p.A.
    Inventors: Alfredo Coassolo, Giampiero Sabarino, Marco Foa', L. Lawrence Chapoy
  • Polyesters of 4,4'dihydroxybicyclohexyl
    Patent number: 4904757
    Abstract: Thermotropic semiflexible polyesters are taught which are obtained by polycondensation of 4,4'-dihydroxybicyclohexyl with at least one .alpha.,.omega.- alkandioic acid of general formula:HOOC-(CH.sub.2).sub.n -COOH (I)wherein n is an integer comprised between 4 and 12.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: February 27, 1990
    Assignee: Montedison S.p.A.
    Inventors: Alfredo Coassolo, Andrea Gardano, Marco Foa', L. Lawrence Chapoy
  • Process for the hydrogenation of bis-phenols
    Patent number: 4885409
    Abstract: Process for the hydrogenation of bis-phenols by reacting bis-phenols with hydrogen in the presence of a catalytic system consisting of palladium supported on activated carbon.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: December 5, 1989
    Assignee: Montedison S.p.A.
    Inventors: Andrea Gardano, Francesco Casagrande, Marco Foa, Guido Petrini, Riccardo Barisone, Lawrence Chapoy