Granted Patent
Utility
US 5,440,575 · App. 08/223,877
Article comprising a semiconductor laser with stble facet coating
Inventors:
Naresh Chand, Robert B. Comizzoli, John W. Osenbach, Charles B. Roxlo, Won-Tien Tsang
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Apr 6, 1994
Inventors
Naresh Chand
Robert B. Comizzoli
John W. Osenbach
Charles B. Roxlo
Won-Tien Tsang
Assignee (at issue)
AT&T CORP.
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.