Patents by Inventor Tim S. Andreyka

Tim S. Andreyka 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).

  • Additives to prevent degradation of alkyl-hydrogen siloxanes
    Patent number: 7531590
    Abstract: An organohydrosiloxane composition comprising: a) one or more organohydrosiloxane compounds, each having at least one [—HSiR—O—] unit, wherein R?C1-C18 linear, branched, or cyclic alkyl, C1-C18 linear, branched, or cyclic alkoxy, or substituted or unsubstituted aryl, and b) an antioxidant compound shown in Formula (1) wherein the antioxidant compound is a phenolic compound and is present in a concentration from about 1 ppm to about 5,000 ppm and wherein R1 through R5 can each independently be H, OH, C1-C18 linear, branched, or cyclic alkyl, C1-C18 linear, branched, or cyclic alkoxy or substituted or unsubstituted aryl. The compositions of present invention exhibit stability and significantly extend the shelf life of organohydrosiloxane products and allow greater flexibility in handling these products in chemical processes or semiconductor manufacturing. The resulting stabilization of siloxanes prevents the possibility of complete polymerization (i.e.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: May 12, 2009
    Assignee: Fujifilm Electronic Materials U.S.A., Inc.
    Inventors: Daniel J. Teff, Gregory B. Smith, John L. Chagolla, Tim S. Andreyka
  • Additives to prevent degradation of alkyl-hydrogen siloxanes
    Patent number: 7129311
    Abstract: An organohydrosiloxane composition comprising: a) one or more organohydrosiloxane compounds, each having at least one [—HSiR—O—] unit, wherein R?C1–C18 linear, branched, or cyclic alkyl, C1–C18 linear, branched, or cyclic alkoxy, or substituted or unsubstituted aryl, and b) an antioxidant compound shown in Formula (1) ?wherein the antioxidant compound is a phenolic compound and is present in a concentration from about 1 ppm to about 5,000 ppm and wherein R1 through R5 can each independently be H, OH, C1–C18 linear, branched, or cyclic alkyl, C1–C18 linear, branched, or cyclic alkoxy or substituted or unsubstituted aryl. The compositions of present invention exhibit stability and significantly extend the shelf life of organohydrosiloxane products and allow greater flexibility in handling these products in chemical processes or semiconductor manufacturing. The resulting stabilization of siloxanes prevents the possibility of complete polymerization (i.e.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: October 31, 2006
    Assignee: Arch Specialty Chemicals, Inc.
    Inventors: Daniel J. Teff, Gregory B. Smith, John L. Chagolla, Tim S. Andreyka
  • Additives to prevent degradation of alkyl-hydrogen siloxanes
    Publication number: 20040127070
    Abstract: An organohydrosiloxane composition comprising:
    Type: Application
    Filed: September 18, 2003
    Publication date: July 1, 2004
    Applicant: Arch Specialty Chemicals, Inc.
    Inventors: Daniel J. Teff, Gregory B. Smith, John L. Chagolla, Tim S. Andreyka