Patents by Inventor Tadashi Hamachi

Tadashi Hamachi 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: 7300648
    Abstract: A polyorganosiloxane emulsion composition characterized by comprising (A) a polyorganosiloxane, (B) an N-acylalkyl taurine and/or a salt thereof, and (C) water, the content of cyclic organosiloxane oligomers in said component (A) being within 3.5 wt. %, and a cosmetic raw material characterized by consisting of said polyorganosiloxane emulsion composition. The emulsion composition is characterized by superior cosmetic functionality in terms of moisture and smoothness.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 27, 2007
    Assignee: Dowecorning Toray Silicone, Co., Ltd.
    Inventors: Tadashi Hamachi, Masaru Ozaki, Hidefumi Tanaka
  • Publication number: 20040147647
    Abstract: A polyorganosiloxane micro-emulsion composition comprising (A) a polyorganosiloxane, (B) an N-acylalkyltaurine and/or an N-acylalkyltaurine salt, and (C) water, the emulsion having an average particle size less than 0.15 &mgr;m; and a raw material for cosmetics comprising the aforesaid polyorganosiloxane micro-emulsion composition.
    Type: Application
    Filed: November 13, 2003
    Publication date: July 29, 2004
    Inventor: Tadashi Hamachi
  • Publication number: 20040138373
    Abstract: A polyorganosiloxane emulsion composition characterized by comprising (A) a polyorganosiloxane, (B) an N-acylalkyl taurine and/or a salt thereof, and (C) water, the content of cyclic organosiloxane oligomers in said component (A) being within 3.5 wt. %, and a cosmetic raw material characterized by consisting of said polyorganosiloxane emulsion composition. The emulsion composition is characterized by superior cosmetic functionality in terms of moisture and smoothness.
    Type: Application
    Filed: October 21, 2003
    Publication date: July 15, 2004
    Inventors: Tadashi Hamachi, Masaru Ozaki, Hidefumi Tanaka
  • Publication number: 20040091438
    Abstract: A polyorganosiloxane emulsion comprising (A) polyorganosiloxane, (B) N-acylalkyltaurine, salts thereof, and combinations thereof, and (C) water, the aforementioned emulsion having an average particle diameter of 0.15 &mgr;m or or greater; a method of preparation of the polyorganosiloxane emulsion, characterized by subjecting a polyorganosiloxane (a) having a molecular weight lower than that of component (A), to emulsification polymerization in water in the presence of component (B), and a cosmetic raw material comprising the aforementioned polyorganosiloxane emulsion. The cosmetic raw material of the invention possesses excellent cosmetic functionalities such as wettability, smoothness, and good affinity to skin and hair. Furthermore, it is characterized by good stability in storage and compounding stability in combination with other cosmetic raw materials.
    Type: Application
    Filed: September 8, 2003
    Publication date: May 13, 2004
    Inventors: Masaru Ozaki, Tadashi Hamachi, Hidefumi Tanaka
  • Patent number: 6280748
    Abstract: A cosmetic raw material possesses excellent compounding stability in cosmetic products. The cosmetic raw material is produced from a vinyl-type polymer having a carbosiloxane dendrimer structure in its side molecular chain. The cosmetic raw material is composed of the vinyl-type polymer having a carbosiloxane dendrimer structure in its side molecular chain, and a solution or a dispersion of a liquid such as a silicone oil, organic oil, alcohol, or water.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: August 28, 2001
    Assignee: Dow Corning Toray Silicone, Ltd.
    Inventors: Yoshitsugu Morita, Haruhiko Furukawa, Takayuki Aso, Tadashi Hamachi
  • Patent number: 6238656
    Abstract: A cosmetic raw material provides uniform dispersions of silicone oils and crosslinked silicone particles in cosmetic products. The cosmetic products consist of the cosmetic raw material combined with other types of cosmetic raw materials. This provides pleasant sensations of touch with the fingers and skin, improved rubbing properties, and sensation in their use. The method of manufacturing the cosmetic products has a high efficiency. The cosmetic raw material is made from a silicone oil emulsion containing crosslinked silicone particles having an average diameter of 0.05-100 &mgr;m which are contained in silicone oil drops having an average diameter of 0.1-500 &mgr;m, the drops in turn being dispersed in water. The diameter of the crosslinked silicone particles is less than the diameter of the silicone oil drops.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: May 29, 2001
    Assignee: Dow Corning Toray Silicone Corporation, Ltd.
    Inventors: Yoshitsugu Morita, Kazuo Kobayashi, Ryuji Tachibana, Tadashi Hamachi, Masaru Ozaki
  • Patent number: 5840831
    Abstract: A cured silicone powder inhibited from evolving unpleasant odors with the passage of time, and an efficient method for preparation of the cured silicone powder, in which the surface of the cured silicone powder is treated with an alkali, by dipping the cured silicone powder in an aqueous alkaline solution.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 24, 1998
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Tadashi Hamachi, Kazuo Kobayashi, Yoshitsugu Morita, Kiyotaka Sawa, Ryuji Tachibana
  • Patent number: 5633303
    Abstract: An organopolysiloxane gum emulsion is afforded by the emulsification of an organopolysiloxane gum in water. The organopolysiloxane gum emulsion is useful as a cosmetic base, lustrant, lubricant, antifoam, fiber-treatment agent, and paint additive. The organopolysiloxane gum emulsion includes(A) 100 weight parts organopolysiloxane gum whose plasticity at 25.degree. C. is at least 0.75 mm,(B) 1 to 100 weight parts emulsifying agent, and(C) 3 to 800 weight parts water.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: May 27, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hidetoshi Kondo, Tadashi Hamachi, Hidehiko Hosokawa, Fumitaka Suto, Junichi Maeshima