Granted Patent
Utility
US 5,090,995 · App. 07/206,476
Aqueous biocide composition stabilized by phthalic acid esters
Inventors:
Yutaka Kubota, Seiichi Shimono, Tetsuo Yanami, Tetsuji Iwasaki, Kazuhiko Kurita
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Jun 13, 1988
Inventors
Yutaka Kubota
Seiichi Shimono
Tetsuo Yanami
Tetsuji Iwasaki
Kazuhiko Kurita
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
Kao 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.