Granted Patent
Utility
US 5,869,732 · App. 08/889,937
Process for producing tricyanoethylated pentaerythritol
Inventors:
Satoshi Nishikawa, Shinji Bessho
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Jul 10, 1997
Inventors
Satoshi Nishikawa
Shinji Bessho
Assignees (at issue)
Sunstar Giken Kabushiki Kaisha
Uni-Sunstar B.V.
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.