Granted Patent
Utility
US 4,740,469 · App. 06/787,590
Enzyme-granulating method and granular composition containing enzyme
Inventors:
Masayuki Nishinaka, Hitoshi Iijima
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Oct 15, 1985
Inventors
Masayuki Nishinaka
Hitoshi Iijima
Assignee (at issue)
SHOWA DENKO
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.