Patents by Inventor Alexander Isaakovich Shakhnovich

Alexander Isaakovich Shakhnovich 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).

  • Predicting material color shifts due to weathering
    Patent number: 6734972
    Abstract: Predicting material color shifts due to weathering. A color formulation tool determines the concentration of colorants from a color standard. The color formulation tool obtains weathered optical parameters for the color standard from a color database and predicts the color of the color standard from the colorant concentrations and weathered optical parameters.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: May 11, 2004
    Assignee: General Electric Company
    Inventors: John Frederick Graf, James Edward Pickett, Alexander Isaakovich Shakhnovich, James Paul Barren
  • Predicting material color shifts due to weathering
    Publication number: 20030095258
    Abstract: Predicting material color shifts due to weathering. A color formulation tool determines the concentration of colorants from a color standard. The color formulation tool obtains weathered optical parameters for the color standard from a color database and predicts the color of the color standard from the colorant concentrations and weathered optical parameters.
    Type: Application
    Filed: November 19, 2001
    Publication date: May 22, 2003
    Applicant: General Electric Company
    Inventors: John Frederick Graf, James Edward Pickett, Alexander Isaakovich Shakhnovich, James Paul Barren
  • Color stable compositions containing arylate-comprising polymers
    Patent number: 6417253
    Abstract: The color stability of thermoplastic polymers comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one organodicarboxylic acid is enhanced by combination with at least one photobleachable 4-aminocinnamic compound such as 4-dimethylaminocinnamaldehyde. The latter absorbs radiation in the range between about 360 nanometers and about 390 nanometers, balancing the radiation absorbed by hydroxybenzophenone moieties formed in the polymer.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: July 9, 2002
    Assignee: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Color stable compositions containing arylate-comprising polymers
    Patent number: 6414058
    Abstract: The color stability of thermoplastic polymers comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one organodicarboxylic acid is enhanced by combination with at least one photobleachable 4-aminocinnamic compound such as 4-dimethylaminocinnamaldehyde. The latter absorbs radiation in the range between about 360 nanometers and about 390 nanometers, balancing the radiation absorbed by hydroxybenzophenone moieties formed in the polymer.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: July 2, 2002
    Assignee: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Color stable compositions containing arylate-comprising polymers
    Patent number: 6410620
    Abstract: The color stability of thermoplastic polymers comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one organodicarboxylic acid is enhanced by combination with at least one photobleachable 4-aminocinnamic compound such as 4-dimethylaminocinnamaldehyde. The latter absorbs radiation in the range between about 360 nanometers and about 390 nanometers, balancing the radiation absorbed by hydroxybenzophenone moieties formed in the polymer.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: June 25, 2002
    Assignee: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Color stable compositions containing arylate-comprising polymers
    Publication number: 20020025999
    Abstract: The color stability of thermoplastic polymers comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one organodicarboxylic acid is enhanced by combination with at least one photobleachable 4-aminocinnamic compound such as 4-dimethylaminocinnamaldehyde. The latter absorbs radiation in the range between about 360 nanometers and about 390 nanometers, balancing the radiation absorbed by hydroxybenzophenone moieties formed in the polymer.
    Type: Application
    Filed: March 22, 2001
    Publication date: February 28, 2002
    Applicant: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Color stable compositions containing arylate-comprising polymers
    Publication number: 20010031804
    Abstract: The color stability of thermoplastic polymers comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one organodicarboxylic acid is enhanced by combination with at least one photobleachable 4-aminocinnamic compound such as 4-dimethylaminocinnamaldehyde. The latter absorbs radiation in the range between about 360 nanometers and about 390 nanometers, balancing the radiation absorbed by hydroxybenzophenone moieties formed in the polymer.
    Type: Application
    Filed: March 22, 2001
    Publication date: October 18, 2001
    Applicant: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Resinous compositions containing blue dye
    Patent number: 6245118
    Abstract: Resinous compositions, especially synthetic resins and most especially arylate polymers, contain 2,3-dicyano-1,4-diaminoanthraquinone as a blue dye. Said compositions are characterized by improved weatherability in comparison with compositions containing other blue dyes.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: June 12, 2001
    Assignee: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich
  • Weatherable colored resin compositions
    Patent number: 6228910
    Abstract: Color stability of resinous compositions containing dyes which undergo chemical degradation upon exposure to ultraviolet radiation in the wavelength range of 300-400 nm is improved by incorporating therein an arylate polymer which is a 1,3-dihydroxybenzene isophthalate/terephthalate, preferably a resorcinol isophthalate/terephthalate. Other resins may also be present.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: May 8, 2001
    Assignee: General Electric Company
    Inventor: Alexander Isaakovich Shakhnovich