FH

Fred L. Heismann

AT AT&T: 18 patents #918 of 18,772Top 5%
VS Viavi Solutions: 3 patents #116 of 390Top 30%
AC Acterna: 1 patents #24 of 73Top 35%
FI Finisar: 1 patents #409 of 719Top 60%
Overall (All Time): #173,028 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10651931 Determining in-band optical signal-to-noise ratio in polarization-multiplexed optical signals using signal correlations 2020-05-12
10218436 Determining in-band optical signal-to-noise ratio in polarization-multiplexed optical signals using signal correlations 2019-02-26
9825698 Determining in-band optical signal-to-noise ratio in polarization-multiplexed optical signals using signal correlations 2017-11-21
8294896 Determining in-band optical signal-to-noise ratios in optical signals with time-varying polarization states using polarization extinction 2012-10-23
8135275 Measuring chromatic dispersion in an optical wavelength channel of an optical fiber link Brandon C. Collings 2012-03-13
8131157 Method and apparatus for generating signals with increased dispersion tolerance using a directly modulated laser transmitter Daniel Mahgerefteh, Parviz Tayebati 2012-03-06
6411750 Distortion analyzer Daniel Fishman, David L. Wilson 2002-06-25
6330375 Distortion analyzer for compensation apparatus of first order polarization mode dispersion (PMD) Daniel Fishman, David L. Wilson 2001-12-11
5970201 Power regulation in optical networks Philip J. Anthony, Edmond J. Murphy, Timothy O. Murphy 1999-10-19
5930414 Method and apparatus for automatic compensation of first-order polarization mode dispersion (PMD) Daniel Fishman, David L. Wilson 1999-07-27
5892606 Maintenance of optical networks Mohammad Taghi Fatehi 1999-04-06
5801863 Maintenance of optical networks Mohammad Taghi Fatehi 1998-09-01
5745274 Maintenance of optical networks Mohammad Taghi Fatehi 1998-04-28
5611005 High-speed polarization scrambler with adjustable chirp Robert W. Smith 1997-03-11
5600738 Polarization dispersion compensation for optical devices Glenn D. Bergland, Steven K. Korotky, Edmond J. Murphy 1997-02-04
5495543 Polarization-independent optical wavelength selective coupler Rodney C. Alferness 1996-02-27
5388170 Electrooptic device structure and method for reducing thermal effects in optical waveguide modulators Steven K. Korotky, John J. Veselka, Jr. 1995-02-07
5361270 Apparatus and method employing polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss 1994-11-01
5359678 Apparatus and method employing fast polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss Robert Rosenberg 1994-10-25
5327511 Apparatus and method employing fast polarization modulation to reduce effects of polarization hole burning and polarization dependent loss Robert Rosenberg 1994-07-05
5317439 Automatic on-line monitoring and optimization of optical network switching nodes Mohammad Taghi Fatehi 1994-05-31
5296956 Performance monitoring and fault location for optical equipment, systems and networks Mohammad Taghi Fatehi 1994-03-22
5212743 Automatic polarization controller having broadband, reset-free operation 1993-05-18
4966431 Integrated-optic endless polarization transformer 1990-10-30