Patents by Inventor Yoichi Iwaki

Yoichi Iwaki 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).

  • Corneal subepithelial opacity (haze) inhibitor
    Patent number: 6180673
    Abstract: The present invention relates to a corneal subepithelial opacity (haze) inhibitor comprising as the active ingredient N-(3,4-dimethoxycinnamoyl)anthranilic acid represented by the formula: or a pharmaceutically acceptable salt thereof, is useful for the prevention or treatment of corneal subepithelial opacity (haze) caused by a wound during the operation of refractive surgery such as keratectomy and radial keratotomy, and an external wound.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: January 30, 2001
    Assignees: Kissei Pharmaceutical Co., Ltd., Nihon Tenganyaku Co., Ltd.
    Inventors: Yoichi Iwaki, Ikuo Tobari, Susumu Okamoto, Tatsuro Sakai
  • Thermal image transfer recording medium
    Patent number: 5952103
    Abstract: A thermal image transfer recording medium includes a substrate, a thermal image transfer ink layer provided on the substrate, and a heat resistant protective layer which is provided on the back side of the substrate, opposite to the thermal transfer ink layer with respect to the substrate, with which a thermal head comes into contact. The heat resistant protective layer is made of an organic polymeric material free from cross-linking structure, with a film strength of 10 mN or more, and the surface of the heat resistant protective layer has a contact angle with pure water of 95.degree. or more and a dynamic coefficient of friction of 0.07 or loss. The heat resistant protective layer may also be made of a modified copolymer containing (a) a main backbone chain polymer including an active-hydrogen-containing polymer which encompasses no cellulose compounds and (b) a side chain polymer which is a copolymer of a reactive silicone and a vinyl monomer.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: September 14, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichi Shiokawa, Hiroshi Tohmatsu, Yoji Ide, Yoichi Iwaki, Shigekazu Teranishi, Susumu Kawakami, Hironori Hata
  • Thermal image transfer recording medium
    Patent number: 5773153
    Abstract: A thermal image transfer recording medium includes a substrate, a thermal image transfer ink layer provided on the substrate, and a heat resistant protective layer which is provided on the back side of the substrate, opposite to the thermal transfer ink layer with respect to the substrate, with which a thermal head comes into contact. The heat resistant protective layer is made of an organic polymeric material free from cross-linking structure, with a film strength of 10 mN or more, and the surface of the heat resistant protective layer has a contact angle with pure water of 95.degree. or more and a dynamic coefficient of friction of 0.07 or less. The heat resistant protective layer may also be made of a modified copolymer containing (a) a main backbone chain polymer including an active-hydrogen-containing polymer which encompasses no cellulose compounds and (b) a side chain polymer which is a copolymer of a reactive silicone and a vinyl monomer.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: June 30, 1998
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichi Shiokawa, Hiroshi Tohmatsu, Yoji Ide, Yoichi Iwaki, Shigekazu Teranishi, Susumu Kawakami, Hironori Hata
  • Use of macrolide compounds for eye diseases
    Patent number: 5514686
    Abstract: Macrolide compounds such as the FR-900506 and its related compounds are provided for the prevention or treatment of eye diseases, particularly, allergic conjunctivitis. Composition containing such compounds is also disclosed.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: May 7, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Manabu Mochizuki, Yoichi Iwaki
  • Thermal image transfer recording medium
    Patent number: 5409884
    Abstract: A thermal image transfer recording medium is composed of a support, a thermal image transfer ink layer formed thereon, and a heat resistant protective layer which is composed of a cellulose-modified polymer with a backbone polymer thereof being cellulose and/or a cellulose derivative and a branch polymer thereof being a copolymer of a reactive silicone oil and a vinyl monomer, and which is formed on the back side of the support opposite to the thermal image transfer ink layer with respect to the support.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: April 25, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Keishi Taniguchi, Yoichi Iwaki, Yutaka Sakai, Shigekazu Teranishi, Susumu Kawakami, Hironori Hata