Granted Patent
Utility
US 5,856,869 · App. 08/657,481
Distributed bragg reflector diode laser for Raman excitation and method for use
Inventors:
John B. Cooper, Philip E. Flecher, William T. Welch
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: May 29, 1996
Inventors
John B. Cooper
Philip E. Flecher
William T. Welch
Assignee (at issue)
Ashland, Inc.
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.