Granted Patent
Utility
US 5,521,090 · App. 08/195,887
L-ascorbic acid containing biomass of chlorella pyrenoidosa
Inventors:
James A. Doncheck, Ronald J. Huss, Jeffrey Running, Thomas Joseph Skatrud
Patented Case
View Patent ↗
Granted: May 28, 1996
Filed: Feb 10, 1994
Inventors
James A. Doncheck
Ronald J. Huss
Jeffrey Running
Thomas Joseph Skatrud
Assignee (at issue)
Bio-Technical Resources
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.