Granted Patent
Utility
US 4,439,448 · App. 06/319,992
Glutamine derivatives
Inventors:
Hiroaki Munakata, Makio Kobayashi, Kazuo Wagatsuma, Shigeru Sato, Makoto Tsurufuji, Hiroshi Enomoto, Shingo Matsumura
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Nov 10, 1981
Inventors
Hiroaki Munakata
Makio Kobayashi
Kazuo Wagatsuma
Shigeru Sato
Makoto Tsurufuji
Hiroshi Enomoto
Shingo Matsumura
Assignees (at issue)
Mitsubishi Chemical Industries, Ltd.
NIPPON SHINYAKU 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.