IH

Ian J. Hirst

Nortel Networks Limited: 3 patents #1,060 of 5,294Top 25%
AL Alcatel: 1 patents #1,083 of 2,861Top 40%
IE International Standard Electric: 1 patents #147 of 567Top 30%
NL Northern Telecom Europe Limited: 1 patents #1 of 10Top 10%
Xerox: 1 patents #5,237 of 8,622Top 65%
Overall (All Time): #759,366 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
6639701 Fiber optic transmission with fiber amplifiers and supervisory signals 2003-10-28
5446812 Improving signal to noise ratio in an optical transmission system 1995-08-29
5436746 Optical transmission system 1995-07-25
5425033 Detection of errors in a digital transmission system Anthony Jessop 1995-06-13
5184081 Fault location Thomas Oswald 1993-02-02
4900005 Sheet feed apparatus Richard Blyth, Jeffrey J. Masters, Leonard V. Gates 1990-02-13
4564933 Supervision of digital transmission systems 1986-01-14