Granted Patent
Utility
US 6,235,947 · App. 09/155,978
D-mannitol and its preparation
Inventors:
Tomohiro Yoshinari, Fritz Schueckler, Norbert Poellinger, Shinji Maegata
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Oct 23, 1998
Inventors
Tomohiro Yoshinari
Fritz Schueckler
Norbert Poellinger
Shinji Maegata
Assignees (at issue)
Takeda Chemical Industries Ltd.
Bayer Aktiengesellschaft
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.