Granted Patent
Utility
US 4,331,574 · App. 06/241,163
Process for preparation of water-thinnable epoxy resins
Inventors:
Jurrianus Bekooij, Werner T. Raudenbusch, Stephen A. Stachowiak
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Mar 6, 1981
Inventors
Jurrianus Bekooij
Werner T. Raudenbusch
Stephen A. Stachowiak
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.