Granted Patent
Utility
US 6,040,452 · App. 09/331,241
Process for making benzisothiazolin-3-ones
Inventors:
Brian Geoffrey Cox, Thomas Gray
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Jun 18, 1999
Inventors
Brian Geoffrey Cox
Thomas Gray
Assignee (at issue)
Zeneca 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.