Patents by Inventor Takahashi Harada

Takahashi Harada 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).

  • Biaxially stretched polyester film
    Patent number: 5324574
    Abstract: A novel biaxially stretched polyester film having excellent transparency and slipperiness is disclosed. The biaxially stretched polyester comprises a polyester composition which exhibits a film haze of not more than 1% after it is made into a film having a thickness of 100 .mu.m and 50-500 ppm on the basis of the weight of monodispersed cross-linked high polymer particles having an average particle diameter of 0.8-1.4 .mu.m and exhibits a deformability of 1.2-5.0 in a biaxially stretched polyester film.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: June 28, 1994
    Assignee: Diafoil Hoechst Company, Ltd.
    Inventors: Seiji Sakamoto, Chikakazu Kawaguchi, Takahashi Harada