Granted Patent
Utility
US 6,265,396 · App. 09/254,175
.beta.-lactam compounds and process for preparing the same
Inventors:
Makoto Sunagawa, Hiroshi Yamaga, Hiroshi Nouda, Hisatoshi Shinagawa
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: Mar 2, 1999
Inventors
Makoto Sunagawa
Hiroshi Yamaga
Hiroshi Nouda
Hisatoshi Shinagawa
Assignee (at issue)
Sumitomo Pharmaceuticals Company Limited
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.