Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MK

Mark B. Ketchen — 50 Patents

IBM: 48 patents #1,839 of 70,183Top 3%
Northrop Grumman: 1 patents #1,512 of 1,695Top 90%
RTX (Raytheon): 1 patents #8,290 of 15,912Top 55%
Hadley, MA: #2 of 53 inventorsTop 4%
Massachusetts: #1,223 of 88,656 inventorsTop 2%
Overall (All Time): #53,743 of 4,157,543Top 2%
50 Patents All Time
Mark B. Ketchen has been granted 50 US patents while listed as an inventor at IBM. The first was granted in 1985 and the most recent in September 2023. Mark B. Ketchen ranks #53,743 of 4,157,543 US inventors in our database (top 1.3%). Patent records list Mark B. Ketchen in Hadley, MA, US.

Patents per Year

Patents granted per year, 1985 to 2023Bar chart with a peak of 5 patents in 2009.peak 51985: 1 patents19851986: 1 patents1989: 1 patents1991: 2 patents19911996: 1 patents1997: 1 patents1998: 1 patents19982003: 2 patents2004: 1 patents2005: 1 patents20052006: 3 patents2007: 4 patents2008: 2 patents20082009: 5 patents2010: 1 patents2011: 1 patents20112012: 5 patents2013: 3 patents2014: 4 patents20142015: 2 patents2016: 1 patents2017: 3 patents20172019: 2 patents2021: 1 patents2023: 1 patents2023

Issued Patents All Time

Showing 1–25 of 50 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11757467 Circuits for converting SFQ-based RZ and NRZ signaling to bilevel voltage NRZ signaling Derek L. Knee, Randall M. Burnett 2023-09-12 $105,135,000
11133452 Trilayer Josephson junction structure with small air bridge and no interlevel dielectric for superconducting qubits Josephine B. Chang, Gerald W. Gibson 2021-09-28 $6,479,000
10381542 Trilayer Josephson junction structure with small air bridge and no interlevel dielectric for superconducting qubits Josephine B. Chang, Gerald W. Gibson 2019-08-13 $1,909,000
10199554 Trilayer Josephson junction structure with small air bridge and no interlevel dielectric for superconducting qubits Josephine B. Chang, Gerald W. Gibson 2019-02-05 $9,200,000
9793913 Single-flux-quantum probabilistic digitizer John F. Bulzacchelli, Christopher B. Lirakis, Alexey Y. Lvov, Stanislav Polonsky, Mark B. Ritter 2017-10-17 $4,096,000
9614532 Single-flux-quantum probabilistic digitizer John F. Bulzacchelli, Christopher B. Lirakis, Alexey Y. Lvov, Stanislav Polonsky, Mark B. Ritter 2017-04-04 $2,713,000
9564573 Trilayer josephson junction structure with small air bridge and no interlevel dielectric for superconducting qubits Josephine B. Chang, Gerald W. Gibson 2017-02-07 $2,910,000
9379303 Modular array of fixed-coupling quantum systems for quantum information processing Jay M. Gambetta, Chad Tyler Rigetti, Matthias Steffen 2016-06-28
9194909 Single level of metal test structure for differential timing and variability measurements of integrated circuits Manjul Bhushan, Chin Kim 2015-11-24 $3,572,000
9075109 Single level of metal test structure for differential timing and variability measurements of integrated circuits Manjul Bhushan, Chin Kim 2015-07-07 $5,899,000
8755220 Hybrid superconducting-magnetic memory cell and array John F. Bulzacchelli, William J. Gallagher 2014-06-17 $4,121,000
8723528 Active 2-dimensional array structure for parallel testing Manjul Bhushan 2014-05-13 $6,724,000
8691608 Semiconductor devices having nanochannels confined by nanometer-spaced electrodes Stefan Harrer, Stanislav Polonsky, John A. Ott 2014-04-08 $7,562,000
8642998 Array of quantum systems in a cavity for quantum computing Jay M. Gambetta, Chad Tyler Rigetti, Matthias Steffen 2014-02-04 $4,435,000
8558326 Semiconductor devices having nanochannels confined by nanometer-spaced electrodes Stefan Harrer, Stanislav Polonsky, John A. Ott 2013-10-15 $3,582,000
8547732 Hybrid superconducting-magnetic memory cell and array John F. Bulzacchelli, William J. Gallagher 2013-10-01 $5,042,000
8456169 High speed measurement of random variation/yield in integrated circuit device testing Manjul Bhushan, Qingqing Liang, Edward P. Maciejewski 2013-06-04 $4,195,000
8310269 Measurement of partially depleted silicon-on-insulator CMOS circuit leakage current under different steady state switching conditions Manjul Bhushan 2012-11-13 $6,514,000
8248094 Acquisition of silicon-on-insulator switching history effects statistics Manjul Bhushan 2012-08-21 $4,162,000
8208288 Hybrid superconducting-magnetic memory cell and array John F. Bulzacchelli, William J. Gallagher 2012-06-26 $15,244,000
8188752 Yield improvement for Josephson junction test device formation Shwetank Kumar, Matthias Steffen, Christopher B. Lirakis, Richard M. Lazarus 2012-05-29
8179120 Single level of metal test structure for differential timing and variability measurements of integrated circuits Manjul Bhushan, Chin Kim 2012-05-15 $8,909,000
8027797 Methods and apparatus for determining a switching history time constant in an integrated circuit device Manjul Bhushan, Dale J. Pearson 2011-09-27 $6,526,000
7733109 Test structure for resistive open detection using voltage contrast inspection and related methods Ishtiaq Ahsan, Kevin McStay, Oliver D. Patterson 2010-06-08 $3,517,000
7595654 Methods and apparatus for inline variability measurement of integrated circuit components Manjul Bhushan, Karen Gettings, Wilfried E. Haensch, Brian L. Ji 2009-09-29 $20,008,000