Granted Patent
Utility
US 5,773,661 · App. 08/922,162
Synthesis of and hydroformylation with fluoro-substituted bidentate phosphine ligands
Inventors:
Jerry D. Unruh, Brigitte E. Segmuller, Gabriel R. Chapa, Kent E. Pryor
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Sep 2, 1997
Inventors
Jerry D. Unruh
Brigitte E. Segmuller
Gabriel R. Chapa
Kent E. Pryor
Assignee (at issue)
Celanese International 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.