Granted Patent
Utility
US 5,340,907 · App. 08/082,566
Copolyester of cyclohexanedimethanol and process for producing such polyester
Inventors:
Cheuk C. Yau, Clinton Cherry
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Jun 28, 1993
Inventors
Cheuk C. Yau
Clinton Cherry
Assignee (at issue)
Eastman Chemical Company
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.