Patents by Inventor Yasuhisa Otani

Yasuhisa Otani 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).

  • Patent number: 6232030
    Abstract: The present invention relates to a process for manufacturing a toner comprising the step of melt-kneading a composition comprising a resin binder and a colorant using an open roller-type continuous kneader having heating and cooling functions. According to the process for manufacturing a toner, there can be manufactured a toner which is excellent in the dispersion of the colorant and/or wax, and a toner having controlled dispersibilities of the charge control agent and the wax.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: May 15, 2001
    Assignee: Kao Corporation
    Inventors: Yasuhisa Otani, Toshihiro Hattori
  • Patent number: 4507279
    Abstract: This invention relates to a cosmetic composition of the oil-in-water type comprising an oily substance having no free carboxyl group, water, and an emulsifier composed of either a combination of a basic polypeptide and a higher fatty acid or a salt (soap) formed from these compounds. This cosmetic composition using such an emulsifier derived from naturally occurring materials causes no irritation to the skin, as contrasted with cosmetic compositions using synthetic emulsifiers. In addition, it shows excellent emulsion stability and storage stability, gives an agreeable feeling, and presents an attractive appearance (fine texture and good gloss).
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: March 26, 1985
    Assignee: Kanebo, Ltd.
    Inventors: Genichiro Okuyama, Shizume Takemoto, Yasuhisa Otani
  • Patent number: 4481187
    Abstract: Disclosed is a clear liquid skin cosmetic composition (e.g., a lotion) in which one or more oily substances (such as oil-soluble perfumes, hormones and the like) are solubilized in water with the aid of a solubilizing agent comprising an 18.alpha.-glycyrrhizin (18.alpha.-glycyrrhizic acid sodium salt, potassium salt or ammonium salt) that is a novel compound derived from a conventional glycyrrhizin (i.e., any form of 18.beta.-glycyrrhizin extracted from licorice root) or a glycyrrhizin composition consisting of an 18.alpha.-glycyrrhizin and an 18.beta.-glycyrrhizin. This skin cosmetic composition is not irritative to the skin as contrasted with skin cosmetic compositions prepared by using a synthetic surface-active agent as the solubilizing agent, and is not subject to gelation in a slightly acidic to acidic pH range as contrasted with skin cosmetic compositions prepared by using an 18.beta.-glycyrrhizin alone as the solubilizing agent.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: November 6, 1984
    Assignees: Kanebo, Ltd., Maruzen Kasei Co., Ltd.
    Inventors: Mitsuo Kondo, Hiromi Minamino, Yasuhisa Otani, Akira Miyashita, Kenzo Okada, Takashi Kuramoto
  • Patent number: 4424204
    Abstract: Disclosed is a creamy or milky skin cosmetic composition which contains an emulsifying agent comprising an 18.alpha.-glycyrrhizin (18.alpha.-glycyrrhizic acid or its sodium, potassium or ammonium salt) that is a novel compound derived from a conventional glycyrrhizin (i.e., any form of 18.beta.-glycyrrhizin extracted from licorice root) or a glycyrrhizin composition consisting of an 18.alpha.-glycyrrhizin and an 18.beta.-glycyrrhizin. This skin cosmetic composition causes no irritation to the skin and hence has great safety for the skin, as contrasted with skin cosmetic compositions using synthetic emulsifiers. Moreover, it exhibits very good emulsion stability and storage stability and presents a very attractive appearance (fine texture and good gloss) owing to the unique effects of the 18.alpha.-glycyrrhizin. In particular, this skin cosmetic composition is characterized in that the difficulties inherent in the use of an emulsifying agent comprising an 18.beta.-glycyrrhizin alone (i.e.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: January 3, 1984
    Assignees: Kanebo Ltd., Maruzen Kasei Co., Ltd.
    Inventors: Hiromi Minamino, Mitsuo Kondo, Yasuhisa Otani, Akira Miyashita, Kenzo Okada, Takashi Kuramoto
  • Patent number: 4278657
    Abstract: Disclosed is a creamy or milky skin cosmetic composition consisting of an oil-in-water emulsion in which an oily substance is dispersed in water with the aid of an emulsifying agent composed of at least glycyrrhizic compound selected from glycyrrhizic acid and salts thereof and at least one water-soluble polysaccharide selected from pectin, karaya gum, locust bean gum and xanthan gum. This skin cosmetic composition causes no irritation to the skin and hence has great safety for the skin, as contrasted with skin cosmetic compositions containing synthetic emulsifiers. In addition, it exhibits very excellent emulsion stability and storage stability and presents a very attractive appearance (fine texture and good gloss) owing to the synergistic effect of the aforesaid glycyrrhizic compound and water-soluble polysaccharide.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: July 14, 1981
    Assignee: Kanebo, Ltd.
    Inventors: Keizo Tezuka, Genichiro Okuyama, Kazunobu Tokunaga, Yasuhisa Otani