Patents by Inventor Akane Kamiyama

Akane Kamiyama 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).

  • Ascorbic acid derivative or salt thereof, production method thereof, and cosmetic
    Patent number: 8163939
    Abstract: Disclosed is an ascorbic acid derivative or a salt thereof wherein at least one of hydrogen atoms in hydroxy groups at the 2-position and the 3-position of ascorbic acid is substituted by R—O—CH2—CH(OH)—CH2—, R—O—CH2—CH(CH2OH)—, R—CH(CH2OH)—, R—CH(OH)—CH2— (wherein R represents an alkyl group, an alkenyl group or a phenyl group), or a hydroxycyclohexyl group. Also disclosed is a method for producing an ascorbic acid derivative or a salt thereof, which is characterized by reacting ascorbic acid with an epoxy compound such as an alkyl glycidyl ether, an epoxy alkane or an alicyclic epoxy.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: April 24, 2012
    Assignee: Seikwa Kasei Company, Limited
    Inventors: Masato Yoshioka, Norihisa Taira, Akane Kamiyama, Keiichi Uehara, Naoya Hashimoto
  • ASCORBIC ACID DERIVATIVE OR SALT THEREOF, PRODUCTION METHOD THEREOF, AND COSMETIC
    Publication number: 20110059034
    Abstract: Disclosed is an ascorbic acid derivative or a salt thereof wherein at least one of hydrogen atoms in hydroxy groups at the 2-position and the 3-position of ascorbic acid is substituted by R—O—CH2—CH(OH)—CH2—, R—O—CH2—CH(CH2OH)—, R—CH(CH2OH)—, R—CH(OH)—CH2— (wherein R represents an alkyl group, an alkenyl group or a phenyl group), or a hydroxycyclohexyl group. Also disclosed is a method for producing an ascorbic acid derivative or a salt thereof, which is characterized by reacting ascorbic acid with an epoxy compound such as an alkyl glycidyl ether, an epoxy alkane or an alicyclic epoxy.
    Type: Application
    Filed: August 21, 2008
    Publication date: March 10, 2011
    Inventors: Masato Yoshioka, Norihisa Taira, Akane Kamiyama, Keiichi Uehara, Naoya Hashimoto