Granted Patent
Utility
US 4,814,512 · App. 07/945,303
Method for the production of p-methoxybenzaldehyde
Inventors:
Michio Ueshima, Yoshiyuki Takahashi, Masatoshi Tsuchino, Noboru Saito
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Dec 19, 1986
Inventors
Michio Ueshima
Yoshiyuki Takahashi
Masatoshi Tsuchino
Noboru Saito
Assignee (at issue)
Nippon Shokubai Kagaku Kogyo Co., 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.