Granted Patent
Utility
US 6,532,774 · App. 09/764,938
Method of providing a high level of rare earth concentrations in glass fiber preforms
Inventors:
Ying Zhang, Brian M. Laliberte, Ray F. Robinson
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Jan 17, 2001
Inventors
Ying Zhang
Brian M. Laliberte
Ray F. Robinson
Assignee (at issue)
JDS Uniphase 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.