Patents by Inventor Yasuhiko Matsui

Yasuhiko Matsui 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).

  • Optical lens
    Patent number: 12240944
    Abstract: The invention provides an optical lens that can provide small-sized imaging modules. The optical lens of the invention comprises a thermoplastic resin having a refractive index (nD) and Abbe number (?) satisfying the following mathematical formula (A): nD??0.02×?+2.040??(A) (where 1.660<nD).
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 4, 2025
    Assignee: TEIJIN LIMITED
    Inventors: Kyosuke Yamada, Manabu Matsui, Takatsune Yanagida, Kazuyoshi Ogasawara, Kazunori Nunome, Keisuke Sato, Tatsuya Oyama, Yasuhiko Tomonari
  • Ceramic sheet and method for producing the same
    Patent number: 4383890
    Abstract: A ceramic sheet comprising 5 to 50 wt. % (absolute dry weight) of a cation-modified pulp having a degree of substitution of cationic group of 0.02 to 0.04 and beaten to freeness of 200 to 100 ml C.S.F. and 50 to 95 wt. % of fine inorganic particles dispersed uniformly in and supported by said cation-modified pulp. This ceramic sheet can be easily prepared from an aqueous suspension of the cation-modified pulp and the fine inorganic particles by using a paper-making treatment.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: May 17, 1983
    Assignees: Nittetsu Mining Co., Ltd., Toyo Pulp Co., Ltd.
    Inventors: Masayuki Oshima, Yasuhiko Matsui