Granted Patent
Utility
US 4,649,177 · App. 06/774,761
Process for the preparation of nylon block polymers
Inventors:
James D. Gabbert, Albert Y. Garner, Ross M. Hedrick
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Sep 11, 1985
Inventors
James D. Gabbert
Albert Y. Garner
Ross M. Hedrick
Assignee (at issue)
DM Rim Nylon Vof
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.