Granted Patent
Utility
US 4,238,396 · App. 05/963,673
1-Hydrocarbyl-pyrrole-2-acetic acid derivatives and their production
Inventors:
Kiyosi Kondo, Minoru Suda, Daiei Tunemoto
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Nov 27, 1978
Inventors
Kiyosi Kondo
Minoru Suda
Daiei Tunemoto
Assignee (at issue)
Sagami Chemical Research Center
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.