IP Library › Granted Patent US 5,882,900
Granted Patent Utility
US 5,882,900 · App. 08/940,697

Process for the selective increase of production of antibiotic GE 2270 factor a by adding vitamin B12 to nutrient medium

Inventors: Angelo Rizzo, Luciano Gastaldo
Patented Case View Patent ↗
Granted: Mar 16, 1999 Filed: Sep 30, 1997
Inventors
Angelo Rizzo
Luciano Gastaldo
Assignee (at issue)
Gruppo Lepetit S.p.A.

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.

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Quick Facts
Patent No.
US 5,882,900
App. No.
08/940,697
Filed
1997-09-30
Granted
1999-03-16
Kind
A