Granted Patent
Utility
US 5,445,872 · App. 08/191,573
Laminated thermoplastics stabilized with bisbenzophenones
Inventors:
Joseph Suhadolnik, James H. Botkin, Carmen Hendricks
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Feb 3, 1994
Inventors
Joseph Suhadolnik
James H. Botkin
Carmen Hendricks
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.