Patents by Inventor Tsunehiko Iwai

Tsunehiko Iwai 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).

  • Aerosol composition
    Patent number: 5223244
    Abstract: An aerosol composition containing a composite powder and one or more of propane, isobutane, n-butane and a liquefied petroleum gas (i.e., LPG) which is a mixture thereof, a chlorinated hydrocarbon and dimethyl ether.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: June 29, 1993
    Assignee: Shiseido Company, Ltd.
    Inventors: Osamu Moro, Toshihiko Nakane, Shuya Tamaki, Tsunehiko Iwai
  • Detergent composition containing a quaternary ammonium cationic surfactant and a carboxylate anionic surfactant
    Patent number: 4919846
    Abstract: A detergent composition having an excellent conditioning effect and low skin irritation, which contains, in an aqueous medium, (i) at least one quaternary ammonium cationic surfactant selected from the group consisting of (a) monoalkyl quaternary ammonium salt cationic surfactant having the formula (I): ##STR1## wherein R.sub.1 represents an alkyl or alkenyl having 12 to 22 carbon atoms, R.sub.2, R.sub.3, and R.sub.4 independently represent methyl or ethyl, and X.sub.1 represents a halogen atom or a methylsulfate residue, (b) ethylene oxide addition quaternary ammonium salt cationic surfactants having the formula (II): ##STR2## wherein R.sub.5 represents an alkyl having 16 to 22 carbon atoms, R.sub.6 represents methyl, ethyl, or an alkyl having 16 to 22 carobn atoms, X.sub.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: April 24, 1990
    Assignee: Shiseido Company Ltd.
    Inventors: Yasunari Nakama, Fuminori Harusawa, Kyoko Otsubo, Tsunehiko Iwai, Shuya Tamaki, Masahiro Ohkoshi