Granted Patent
Utility
US 4,495,173 · App. 06/318,878
Pre-shampoo type hair treatment composition
Inventors:
Kinjiro Matsunaga, Takeo Okumura, Rikio Tsushima
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Nov 6, 1981
Inventors
Kinjiro Matsunaga
Takeo Okumura
Rikio Tsushima
Assignee (at issue)
Kao Soap Co., Ltd.
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.