Granted Patent
Utility
US 4,485,249 · App. 06/511,538
2-Acylated dihydro-1,3-dioxepins, process for the production thereof and use thereof as photo-initiators
Inventors:
Hans-Dieter Scharf, Herbert Frauenrath, Hans-Georg Heine, Hans Rudolph, Karl-Friedrich Neuhaus, Otto Bendszus
Patented Case
View Patent ↗
Granted: Nov 27, 1984
Filed: Jul 7, 1983
Inventors
Hans-Dieter Scharf
Herbert Frauenrath
Hans-Georg Heine
Hans Rudolph
Karl-Friedrich Neuhaus
Otto Bendszus
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.