Granted Patent
Utility
US 6,156,902 · App. 09/161,549
Bis-o-amino (thio) phenols, and their preparation
Inventors:
Recai Sezi, Michael Keitmann, Andreas Weber
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Sep 24, 1998
Inventors
Recai Sezi
Michael Keitmann
Andreas Weber
Assignee (at issue)
Infineon Technologies AG
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.