Granted Patent
Utility
US 6,642,377 · App. 10/030,909
Process for the preparation of basic antibiotic-inorganic acid addition salts and intermediate oxalates
Inventors:
Akio Kayano, Hiroyuki Chiba, Taiju Nakamura, Shin Sakurai, Hiroyuki Ishizuka, Hiroyuki Saito, Yuuki Komatsu, Manabu Sasho, Nobuaki Sato, Shigeto Negi
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Jan 14, 2002
Inventors
Akio Kayano
Hiroyuki Chiba
Taiju Nakamura
Shin Sakurai
Hiroyuki Ishizuka
Hiroyuki Saito
Yuuki Komatsu
Manabu Sasho
Nobuaki Sato
Shigeto Negi
Assignee (at issue)
Eisai Inc.
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.