Granted Patent
Utility
US 4,699,992 · App. 06/775,202
3-amino-2-benzoylacrylic acid derivatives
Inventor:
Klaus Grohe
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Sep 12, 1985
Inventor
Klaus Grohe
Assignee (at issue)
Bayer Aktiengesellschaft
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.