Granted Patent
Utility
US 4,690,895 · App. 06/845,654
Use of rLDM.TM. 1-6 and other ligninolytic enzymes in the bleaching of kraft pulp
Inventor:
Roberta L. Farrell
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Mar 28, 1986
Inventor
Roberta L. Farrell
Assignee (at issue)
Repligen Corporation
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.