DW

David F. Welch

IN Infinera: 83 patents #2 of 407Top 1%
SD Sdl: 60 patents #1 of 128Top 1%
SL Spectra Diode Laboratories: 16 patents #2 of 22Top 10%
JU Jds Uniphase: 8 patents #44 of 940Top 5%
SS Sprint Spectrum: 4 patents #226 of 810Top 30%
Xerox: 2 patents #3,932 of 8,622Top 50%
HL Hughes Electronics Limited: 1 patents #605 of 1,474Top 45%
AT AT&T: 1 patents #10,626 of 18,772Top 60%
📍 Atherton, CA: #2 of 431 inventorsTop 1%
🗺 California: #705 of 386,348 inventorsTop 1%
Overall (All Time): #4,327 of 4,157,543Top 1%
178
Patents All Time

Issued Patents All Time

Showing 26–50 of 178 patents

Patent #TitleCo-InventorsDate
9031412 Coolerless photonic integrated circuits (PICs) for WDM transmission networks and PICs operable with a floating signal channel grid changing with temperature but with fixed channel spacing in the floating grid Radhakrishnan L. Nagarajan, Fred A. Kish, Jr., Drew D. Perkins, Masaki Kato 2015-05-12
8861977 Multiplexer and modulation arrangements for multi-carrier optical modems John D. McNicol, Matthew L. Mitchell 2014-10-14
8831439 Upsampling optical transmitter Kuang-Tsan Wu, John D. McNicol, Stephen G. Grubb, Pierre Mertz 2014-09-09
8768177 Wavelength division multiplexed optical communication system having variable channel spacings Kuang-Tsan Wu, John D. McNicol, Stephen G. Grubb, Pierre Mertz 2014-07-01
8660020 Communication network with skew compensation Drew D. Perkins, Ting-Kuang Chiang, Edward E. Sprague, Parthiban Kandappan, Stephen G. Grubb +1 more 2014-02-25
8655190 Wavelength division multiplexed optical communication system architectures Kuang-Tsan Wu, John D. McNicol, Stephen G. Grubb, Pierre Mertz 2014-02-18
8655169 Degradation adaptation network Drew D. Perkins 2014-02-18
8639118 Wavelength division multiplexed optical communication system having variable channel spacings and different modulation formats Kuang-Tsan Wu, John D. McNicol, Stephen G. Grubb, Pierre Mertz 2014-01-28
8548333 Transceiver photonic integrated circuit Radhakrishnan L. Nagarajan, Masaki Kato, Fred A. Kish, Jr., Charles H. Joyner 2013-10-01
8521020 Forward error correction (FEC) enabled photonic integrated circuit (PIC) chips with multiple signal channels Drew D. Perkins, Fred A. Kish, Jr., Ting-Kuang Chiang 2013-08-27
8444345 Floatation collar for protecting and positioning a sensor package 2013-05-21
8300994 Transmitter photonic integrated circuit (TxPIC) chip Vincent G. Dominic, Fred A. Kish, Jr., Mark J. Missey, Radhakrishnan L. Nagarajan, Atul Mathur +9 more 2012-10-30
8259703 Communication network with skew determination Drew D. Perkins, Ting-Kuang Chiang, Edward E. Sprague, Parthiban Kandappan, Steven G. Grubb +2 more 2012-09-04
8184929 Method of tuning optical components integrated in a monolithic photonic integrated circuit (PIC) Fred A. Kish, Jr., Charles H. Joyner, Robert B. Taylor, Alan C. Nilsson 2012-05-22
8175113 Communication network with node bypassed co-routed multi-channel traffic Drew D. Perkins, Ting-Kuang Chiang, Charles H. Joyner, Edward E. Sprague, Parthiban Kandappan +2 more 2012-05-08
8111685 Communication network with co-routed multi-channel traffic Drew D. Perkins, Ting-Kuang Chiang, Edward E. Sprague, Parthiban Kandappan, Stephen G. Grubb +1 more 2012-02-07
7885492 Transmitter photonic integrated circuit (TxPIC) chips Vincent G. Dominic, Fred A. Kish, Jr., Mark J. Missey, Radhakrishnan L. Nagarajan, Atul Mathur +9 more 2011-02-08
7773837 Monolithic transmitter photonic integrated circuit (TXPIC) with a transversely disposed output Vincent G. Dominic, Fred A. Kish, Jr., Mark J. Missey, Radhakrishnan L. Nagarajan, Atul Mathur +9 more 2010-08-10
7751713 Communication network with skew path monitoring and adjustment Drew D. Perkins, Ting-Kuang Chiang, Charles H. Joyner, Edward E. Sprague, Parthiban Kandappan +3 more 2010-07-06
7751658 Monolithic transmitter photonic integrated circuit (TxPIC) having tunable modulated sources with feedback system for source power level or wavelength tuning Vincent G. Dominic, Fred A. Kish, Jr., Robert B. Taylor, Matthew L. Mitchell, Alan C. Nilsson +2 more 2010-07-06
7734191 Forward error correction (FEC) enabled photonic integrated circuit (PICs) chips with multiple signal channels Drew D. Perkins, Fred A. Kish, Jr., Ting-Kuang Chiang 2010-06-08
7680368 Monolithic transmitter photonic integrated circuit (TxPIC) with a traversely disposed output Vincent G. Dominic, Fred A. Kish, Jr., Mark J. Missey, Radhakrishnan L. Nagarajan, Atul Mathur +9 more 2010-03-16
7672546 Optical transport network having a plurality of monolithic photonic integrated circuit semiconductor chips Vincent G. Dominic, Fred A. Kish, Jr., Mark J. Missey, Radhakrishnan L. Nagarajan, Atul Mathur +5 more 2010-03-02
7636522 Coolerless photonic integrated circuits (PICs) for WDM transmission networks and PICs operable with a floating signal channel grid changing with temperature but with fixed channel spacing in the floating grid Radhakrishnan L. Nagarajan, Fred A. Kish, Jr., Drew D. Perkins, Masaki Kato 2009-12-22
7634195 Digital optical network architecture Jagdeep Ahluwalia SINGH, Drew D. Perkins, Mark Yin, Fred A. Kish, Jr., Stephen G. Grubb +4 more 2009-12-15