Granted Patent
Utility
US 5,925,724 · App. 08/494,639
Use of polydiene diols in thermoplastic polyurethanes
Inventors:
Jozef Lucien Rudolf Cenens, Hector Hernandez
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Jun 23, 1995
Inventors
Jozef Lucien Rudolf Cenens
Hector Hernandez
Assignee (at issue)
SHELL OIL 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.