Granted Patent
Utility
US 5,068,447 · App. 07/550,246
Friedel-crafts preparation of aromatic ketones with an inoganic salt controlling agent
Inventors:
Heinrich C. Gors, Patrick J. Horner, Viktors Jansons
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Jul 6, 1990
Inventors
Heinrich C. Gors
Patrick J. Horner
Viktors Jansons
Assignee (at issue)
Raychem Limited
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.