Granted Patent
Utility
US 5,667,634 · App. 08/271,274
Method for controlling pitch deposits in papermaking process using lipase and polyelectrolyte
Inventors:
Yuko Fujita, Haruo Awaji, Hidesato Shimoto, Masaki Sharyou
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Jul 6, 1994
Inventors
Yuko Fujita
Haruo Awaji
Hidesato Shimoto
Masaki Sharyou
Assignee (at issue)
Novo Nordisk A/S
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.