Granted Patent
Utility
US 4,369,123 · App. 06/161,113
Stable emulsions of substantially pure alkenylsuccinic acid and their preparation
Inventors:
Charles M. Selwitz, Johann G. D. Schulz
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Jun 19, 1980
Inventors
Charles M. Selwitz
Johann G. D. Schulz
Assignee (at issue)
Gulf Research & Development 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.