Granted Patent
Utility
US 4,826,433 · App. 07/062,549
Stick absorber for oral cavity
Inventors:
Takashi Sakai, Hiroshi Kitayama, Masamitu Yamamoto, Takashi Mino
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Jun 16, 1987
Inventors
Takashi Sakai
Hiroshi Kitayama
Masamitu Yamamoto
Takashi Mino
Assignees (at issue)
Mitsubishi Acetate Co., Ltd.
Unicharm Corporation
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.