Granted Patent
Utility
US 6,497,898 · App. 08/628,674
Surfactant, and an emulsion-type cosmetic composition and a lipsome containing said surfactant
Inventors:
Takeshi Ikemoto, Hiromi Minamino, Yasushi Sumida, Yoh-ichi Inoue
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: May 13, 1996
Inventors
Takeshi Ikemoto
Hiromi Minamino
Yasushi Sumida
Yoh-ichi Inoue
Assignee (at issue)
KANEBO, LIMITED
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.