Patents by Inventor Tomohisa Asahara

Tomohisa Asahara 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).

  • Skin treatment composition
    Patent number: 5310730
    Abstract: A skin treatment composition comprising at least one glycoside of hydroquinone having the general formula: ##STR1## wherein R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof in a skin treatment base. This skin treatment composition can further contain at least one UV absorber. The hydroquinone glycoside (I) exhibits an excellent depigmentation effect and effectively suppresses skin irritation caused by the UV absorber.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: May 10, 1994
    Assignee: Shiseido Company Ltd.
    Inventors: Yoshimori Fujinuma, Tomohisa Asahara, Satoru Akiu, Yumiko Suzuki, Hideyuki Ichikawa, Yoshio Katsumura
  • Skin treatment composition
    Patent number: 4764505
    Abstract: A skin treatment composition comprising at least one glycoside of hydroquinone having the general formula: ##STR1## wherein R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof in a skin treatment base. This skin treatment composition can further contain at least one UV absorber. The hydroquinone glycoside (I) exhibits an excellent depigmentation effect and effectively suppresses skin irritation caused by the UV absorber.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: August 16, 1988
    Assignee: Shiseido Company Ltd.
    Inventors: Yoshimori Fujinuma, Tomohisa Asahara, Satoru Akiu, Yumiko Suzuki, Hideyuki Ichikawa, Yoshio Katsumura