Patents by Inventor Katuyuki Fujita

Katuyuki Fujita 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).

  • Thermochromic textile material
    Patent number: 4681791
    Abstract: A textile material in the form of fiber, raw stock, yarn or fabric, which comprises fibers each of which is coated with a thermochromic layer containing a thermochromic pigment having a particle size satisfying the formula: ##EQU1## wherein r represents a particle size of a pigment; D represents fineness (denier) of a fiber; and d represents a density (g/cm.sup.3) of a fiber. The textile material can undergo reversible color change in a wide variety of colors and can be applied to any kind of textile products.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: July 21, 1987
    Assignee: Pilot Ink Co., Ltd.
    Inventors: Yutaka Shibahashi, Norikazu Nakasuji, Takashi Kataoka, Hiroshi Inagaki, Tutomu Kito, Masaharu Ozaki, Nobuaki Matunami, Naoya Ishimura, Katuyuki Fujita