Granted Patent
Utility
US 6,828,348 · App. 10/479,145
L-ascorbic acid-2-o-maleic acid-a-tocopherol diester 1-propanol adduct and process for producing the same
Inventors:
Kazumi Ogata, Noriko Saito, Kazuhiko Yamada, Genta Maruyama
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Nov 25, 2003
Inventors
Kazumi Ogata
Noriko Saito
Kazuhiko Yamada
Genta Maruyama
Assignee (at issue)
SENJU PHARMACEUTICAL CO., LTD.
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.