Granted Patent
Utility
US 5,254,749 · App. 07/741,518
Process for producing dipentaerythritol
Inventors:
Yoshihiko Kambara, Toru Idemoto, Yasuki Ono, Chika Tona
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Aug 9, 1991
Inventors
Yoshihiko Kambara
Toru Idemoto
Yasuki Ono
Chika Tona
Assignee (at issue)
Mitsui Toatsu Chemicals, 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.