Granted Patent
Utility
US 4,617,342 · App. 06/735,072
Crystalline copolyamide from terephthalic acid, isophthalic acid and C.sub. 6
Inventors:
Wassily Poppe, Yu-Tsai Chen, Edward E. Paschke
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: May 16, 1985
Inventors
Wassily Poppe
Yu-Tsai Chen
Edward E. Paschke
Assignee (at issue)
Amoco 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.