Granted Patent
Utility
US 4,746,734 · App. 07/020,250
Partially methylated cyclodextrins and process for producing the same
Inventors:
Yukio Tsuchiyama, Michikatsu Sato, Yoshiaki Yagi, Tomoyuki Ishikura
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Feb 27, 1987
Inventors
Yukio Tsuchiyama
Michikatsu Sato
Yoshiaki Yagi
Tomoyuki Ishikura
Assignee (at issue)
Sanraku Incorporated
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.