Granted Patent
Utility
US 5,510,551 · App. 08/208,985
Extraction of carotenoids from natural sources
Inventors:
Frederic A. Graves, Daniel D. Gallaher
Patented Case
View Patent ↗
Granted: Apr 23, 1996
Filed: Apr 28, 1994
Inventors
Frederic A. Graves
Daniel D. Gallaher
Assignee (at issue)
Humatics 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.