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 1–25 of 178 patents

Patent #TitleCo-InventorsDate
12407439 Subcarrier based data center network architecture Stuart Elby 2025-09-02
12401424 Fiber-coupled Terahertz transceiver system Joy Laskar, Philip Kness, Richard Chan, Rene Schmogrow, Sudipto Chakraborty +2 more 2025-08-26
12255731 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2025-03-18
12095546 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2024-09-17
11990985 Time division multiple access optical subcarriers Amir Jafari, Kuang-Tsan Wu, Steven Joseph Hand, Mohamed Osman 2024-05-21
11855754 Subcarrier modulation with radio frequency (RF) IQ modulators Kuang-Tsan Wu, Han Henry Sun, Steven Joseph Hand 2023-12-26
11824628 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2023-11-21
11824632 Subcarrier based data center network architecture Stuart Elby 2023-11-21
11791893 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2023-10-17
11743621 Network switches systems for optical communications networks Tulasi Veguru, Mats Plantare, Prasad Paranjape, Ting-Kuang Chiang, Gus Elmer 2023-08-29
11637630 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2023-04-25
11539430 Code division multiple access optical subcarriers Amir Jafari, Steven Joseph Hand, Mohamed Osman 2022-12-27
11483066 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2022-10-25
11451292 Time division multiple access optical subcarriers Amir Jafari, Kuang-Tsan Wu, Steven Joseph Hand, Mohamed Osman 2022-09-20
11258528 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2022-02-22
11258508 Time division multiple access optical subcarriers Amir Jafari, Kuang-Tsan Wu, Steven Joseph Hand, Mohamed Osman 2022-02-22
11218217 Code division multiple access optical subcarriers Amir Jafari, Steven Joseph Hand, Mohamed Osman 2022-01-04
11095364 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2021-08-17
11095389 Subcarrier based data center network architecture Stuart Elby 2021-08-17
11075694 Frequency division multiple access optical subcarriers Jeffrey T. Rahn, Kuang-Tsan Wu, Steven Joseph Hand 2021-07-27
10012797 Monolithic photonic integrated circuit (PIC) with a plurality of integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL) Radhakrishnan L. Nagarajan, Fred A. Kish, Jr., Masaki Kato, Charles H. Joyner, Randal A. Salvatore +7 more 2018-07-03
9971090 Apparatus and method for tuning a laser source emission wavelength employing a laser source contact comprising electrode segments Fred A. Kish, Jr., Charles H. Joyner 2018-05-15
9634788 Optical communication system having low latency Paul R. Morkel 2017-04-25
9372306 Method of achieving acceptable performance in and fabrication of a monolithic photonic integrated circuit (PIC) with integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL) Radhakrishnan L. Nagarajan, Fred A. Kish, Jr., Masaki Kato, Charles H. Joyner, Randal A. Salvatore +7 more 2016-06-21
9166696 Upsampling optical transmitter Kuang-Tsan Wu, John D. McNicol, Stephen G. Grubb, Pierre Mertz 2015-10-20