Granted Patent
Utility
US 4,251,442 · App. 06/096,338
Method for synthesis of penicillin
Inventors:
Yoshiharu Morita, Takaharu Itagaki, Tsuyoshi Ito, Shigenori Wada
Patented Case
View Patent ↗
Granted: Feb 17, 1981
Filed: Nov 21, 1979
Inventors
Yoshiharu Morita
Takaharu Itagaki
Tsuyoshi Ito
Shigenori Wada
Assignee (at issue)
Mitsubishi Chemical 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.