Patents by Inventor Carmen Hendricks

Carmen Hendricks 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).

  • Thioether substituted hydroxybenzophenones and stabilized compositions
    Patent number: 6586519
    Abstract: 2-Hydroxybenzophenone derivatives substituted in the 4′-position by a thioether moiety exhibit enhanced absorption in the UV at longer wavelength. Compositions comprising organic material subject to actinic degradation are beneficially stabilized with such derivatives.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 1, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Joseph Suhadolnik, Carmen Hendricks, Roger Meuwly
  • Thioether substituted hydroxybenzophenones and stabilized compositions
    Patent number: 6576797
    Abstract: 2-Hydroxybenzophenone derivatives substituted in the 4′-position by a thioether moiety exhibit enhanced absorption in the UV at longer wavelength. Compositions comprising organic material subject to actinic degradation are beneficially stabilized with such derivatives.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: June 10, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Joseph Suhadolnik, Carmen Hendricks, Roger Meuwly
  • Laminated thermoplastics stabilized with bisbenzophenones
    Patent number: 5445872
    Abstract: Thermoplastic articles, preferably of polycarbonate, are advantageously stabilized by selected bisbenzophenone UV absorbers concentrated in the outer surface or coating layers of the article prepared by coextrusion techniques.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: August 29, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Joseph Suhadolnik, James H. Botkin, Carmen Hendricks
  • Preparing laminated thermoplastics stabilized with bisbenzophenones
    Patent number: 5306456
    Abstract: Thermoplastic articles, preferably of polycarbonate, are advantageously stabilized by selected bisbenzophenone UV absorbers concentrated in the outer surface or coating layers of the article prepared by coextrusion techniques.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: April 26, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Joseph Suhadolnik, James H. Botkin, Carmen Hendricks