Granted Patent
Utility
US 4,987,148 · App. 07/424,029
Biocidal 4,5-dichloro-1,2-dithiol-3-one composition
Inventors:
Yasuhiro Hidaka, Masato Magami, Takeshi Inoue, Sumio Nakane
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Oct 19, 1989
Inventors
Yasuhiro Hidaka
Masato Magami
Takeshi Inoue
Sumio Nakane
Assignee (at issue)
Yoshitomi Pharmaceutical Industries, 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.