Granted Patent
Utility
US 5,616,215 · App. 08/337,575
Method of making paper from pulp treated with lipase and an aluminum salt
Inventors:
Hans Peter Heldt-Hansen, Yuko Fujita, Haruo Awaji, Hidesato Shimoto, Masaki Sharyou
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Nov 10, 1994
Inventors
Hans Peter Heldt-Hansen
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.