Patents by Inventor Takahasi Tatsuhiro

Takahasi Tatsuhiro 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).

  • Fluoropolymer low reflecting layers for plastic lenses and devices
    Patent number: 7297398
    Abstract: A one or two layer coating system has been developed for plastic substrates. The one coating system low reflective layer consists of a fluorinated copolymer having the formula: VF2/TFE/HFP, VF2/HFP or VF2/TFE/PMVE. In the two coating system, the upper coating layer consists of TFE/HFP, VF2/TFE/HFP, or TFE/Perfluorodioxole, and the lower coating layer consists of VF2/TFE/HFP, VF/TFE/HFP, VAc/TFE/HFIB, or TFE graft to PVOH.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: November 20, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Andrew Edward Feiring, Satoko Iwato, Mureo Kaku, Takahasi Tatsuhiro, Ronald Earl Uschold, Robert Clayton Wheland
  • Fluoropolymer low reflecting layers for plastic lenses and devices
    Publication number: 20040037967
    Abstract: A one or two layer coating system has been developed for plastic substrates. The one coating system low reflective layer consists of a fluorinated copolymer having the formula: VF2/TFE/HFP, VF2/HFP or VF2/TFE/PMVE. In the two coating system, the upper coating layer consists of TFE/HFP, VF2/TFE/HFP, or TFE/Perfluorodioxole, and the lower coating layer consists of VF2/TFE/HFP, VF/TFE/HFP, VAc/TFE/HFIB, or TFE graft to PVOH.
    Type: Application
    Filed: January 30, 2003
    Publication date: February 26, 2004
    Inventors: Andrew Edward Feiring, Satoko Iwato, Mureo Kaku, Takahasi Tatsuhiro, Ronald Earl Uschold, Robert Clayton Wheland