Granted Patent
Utility
US 6,794,519 · App. 10/067,784
Process for the production of sulfonic esters
Inventors:
Fumihiko Kano, Shigeki Kunihiro, Noritaka Yoshida, Natsuki Mori
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Feb 8, 2002
Inventors
Fumihiko Kano
Shigeki Kunihiro
Noritaka Yoshida
Natsuki Mori
Assignee (at issue)
KANEKA CORPORATION
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.