Granted Patent
Utility
US 6,166,243 · App. 09/430,961
Process for the preparation of insecticidal phenylhydrazine derivatives
Inventors:
Haihong Jin, Joseph A. Feiccabrino
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Nov 1, 1999
Inventors
Haihong Jin
Joseph A. Feiccabrino
Assignee (at issue)
CK WITCO CORPORATION
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.