Granted Patent
Utility
US 5,314,637 · App. 08/029,623
Detergent comprising isolated cellulase from bacillus ferm bp-3431 or a mutant strain thereof, surfactant and builder
Inventors:
Kiyoshi Saito, Masahiko Seko, Eiko Masatsuji
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Mar 11, 1993
Inventors
Kiyoshi Saito
Masahiko Seko
Eiko Masatsuji
Assignee (at issue)
Showa Denko K.K.
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.