Granted Patent
Utility
US 4,966,966 · App. 07/144,575
Process for preparing sucrose fatty acid esters
Inventors:
Keisuke Wada, Kazuhiko Onuma, Takashi Ushikubo, Tsuyoshi Ito
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Jan 14, 1988
Inventors
Keisuke Wada
Kazuhiko Onuma
Takashi Ushikubo
Tsuyoshi Ito
Assignee (at issue)
Mitsubishi Chemical Industries, 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.