Patents by Inventor Yoichiro Arai

Yoichiro Arai 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).

  • Process for producing liposome and apparatus therefor
    Publication number: 20040099976
    Abstract: A method for producing liposome encapsulating a desired substance is provided. The method is characteristic in that an aqueous phase containing the substance to be encapsulated is added to a homogenous fluid mixture of a phospholipid or a glycolipid and carbon dioxide either under a supercritical condition or under a condition in which temperature or pressure is higher than or equal to its critical point. This method makes it possible to produce liposomes with improved trapping efficiency in fewer steps and without using harmful organic solvents.
    Type: Application
    Filed: April 8, 2003
    Publication date: May 27, 2004
    Inventors: Katsuto Otake, Masahiko Abe, Hideki Sakai, Tomohiro Imura, Chihiro Kaise, Masatoshi Sakurai, Yoichiro Arai, Teruhisa Kaneko
  • N-acylglutamine derivatives and cosmetic compositions
    Patent number: 5468474
    Abstract: The present invention relates to N-acylglutamine derivatives of formula (I): ##STR1## The N-acylglutamine derivatives are well compatible with oily bases and have good skin-moisturizing activity and hair growth-stimulative effect. These are useful as cosmetics and hair growth stimulants.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: November 21, 1995
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shinkichi Honda, Kenji Torii, Yoichiro Arai, Masaji Kasai, Hiromasa Kato, Takao Iida, Tomoya Takahashi, Yoshiharu Yokoo, Toshikazu Kamiya, Tatsuya Tamaoki
  • Cosmetics based on naturally derived melanin-coated pigments
    Patent number: 5380359
    Abstract: A melanin-coated pigment obtained by coating a carrier with a readily alkali-soluble natural melanin, and a cosmetic containing the pigment are provided. The melanin-coated pigment is highly safe and has high coloring and high saturation tone, and a cosmetic which contains it is also expected to have ultraviolet-ray-absorbing and anti-oxidizing effects.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: January 10, 1995
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shinkichi Honda, Yoichiro Takekoshi, Yoichiro Arai
  • Cosmetic composition
    Patent number: 5112613
    Abstract: Disclosed is a cosmetic composition comprising N-acetylglutamine or a salt thereof.The cosmetic composition of the present invention which is excellent in feel and stability is effective in retaining moisture in the stratum corneum.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: May 12, 1992
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shinkichi Honda, Yoichiro Arai, Hiroshi Toida