Granted Patent
Utility
US 4,256,867 · App. 06/072,493
Novel vinyl ethers, process for their preparation, and their use for the preparation of polymers
Inventors:
Sameer H. Eldin, Friedrich Stockinger
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Sep 4, 1979
Inventors
Sameer H. Eldin
Friedrich Stockinger
Assignee (at issue)
Ciba-Geigy
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.