Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Calvin S. Lo — 193 Patents

IBM: 192 patents #173 of 70,183Top 1%
Globalfoundries: 1 patents #2,221 of 4,424Top 55%
Saratoga, CA: #15 of 2,933 inventorsTop 1%
California: #602 of 386,348 inventorsTop 1%
Overall (All Time): #3,649 of 4,157,543Top 1%
193 Patents All Time
Calvin S. Lo has been granted 193 US patents while listed as an inventor at IBM. The first was granted in 2002 and the most recent in November 2022. Calvin S. Lo ranks #3,649 of 4,157,543 US inventors in our database (top 0.09%). Patent records list Calvin S. Lo in Saratoga, CA, US.

Patents per Year

Patents granted per year, 2002 to 2022Bar chart with a peak of 27 patents in 2016.peak 272002: 1 patents20022005: 1 patents2007: 2 patents20072008: 1 patents2009: 2 patents20092010: 6 patents2011: 3 patents20112012: 4 patents2013: 11 patents20132014: 9 patents2015: 16 patents20152016: 27 patents2017: 27 patents20172018: 24 patents2019: 19 patents20192020: 25 patents2021: 12 patents20212022: 3 patents2022

Issued Patents All Time

Showing 1–25 of 193 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11488629 Protective layer for mitigating protruding defects in magnetic tape recording media Robert G. Biskeborn 2022-11-01 $6,203,000
11393501 Protective layer for mitigating protruding defects in magnetic tape recording media Robert G. Biskeborn 2022-07-19 $13,174,000
11322175 Protective layer for mitigating protruding defects in magnetic tape recording media Robert G. Biskeborn 2022-05-03 $6,057,000
11189306 Reduced-stress tape head module Robert G. Biskeborn, Hoodin Hamidi 2021-11-30 $2,996,000
11114117 Process for manufacturing magnetic head having a servo read transducer structure with dielectric gap liner and a data read transducer structure with an embedded wear layer between thin and thick shield portions David J. Seagle, Robert G. Biskeborn 2021-09-07 $7,685,000
11074930 Read transducer structure having an embedded wear layer between thin and thick shield portions David J. Seagle, Robert G. Biskeborn 2021-07-27 $4,187,000
11056132 Multichannel tape head module having thermally settable transducer pitch and method of setting pitch thereof Robert G. Biskeborn, Hugo E. Rothuizen 2021-07-06 $5,313,000
11037587 Tunnel magnetoresistive sensor having conductive ceramic layers Robert G. Biskeborn, Philip M. Rice, Teya Topuria 2021-06-15 $4,393,000
11031031 Forming recessed portions in a tape head module to provide an air bearing between a tape medium and a tape bearing surface of the tape head module Robert G. Biskeborn 2021-06-08 $4,452,000
10997994 Current-perpendicular-to-plane (CPP) read transducer structure having flux guide and pinned soft bias layer for stabilizing sensor and flux guide David J. Seagle, Robert G. Biskeborn 2021-05-04 $7,263,000
10984823 Write transducers having high moment layer Robert G. Biskeborn, Robert E. Fontana, Jr. 2021-04-20 $5,008,000
10971176 Tunnel magnetoresistive sensor with adjacent gap having chromium alloy seed layer and refractory material layer Robert G. Biskeborn, Jason Liang 2021-04-06 $3,234,000
10930306 Magnetic measurement of head span spacing Robert G. Biskeborn 2021-02-23 $3,028,000
10902867 Interconnect die for multichannel tape head assembly Robert G. Biskeborn 2021-01-26 $1,788,000
10902868 Tape head module having recessed portion to provide an air bearing between a tape medium and a tape bearing surface of the module Robert G. Biskeborn 2021-01-26 $1,788,000
10839837 Determining span expansion or contraction between features and structures in thin films Robert G. Biskeborn, Jason Liang 2020-11-17 $2,639,000
10832712 Magnetic thin film recording head module having electrical shielding between read and write transducer arrays David J. Seagle, Robert G. Biskeborn 2020-11-10 $848,000
10832725 Methods for selecting wrap angle for inducing tape tenting above transducer Robert G. Biskeborn, W. Stanley Czarnecki 2020-11-10 $848,000
10832721 Flexible media burnishing apparatus and method Robert G. Biskeborn, Gary M. Decad, Jason Liang 2020-11-10 $848,000
10832740 Multichannel tape head module having embedded thermal device Robert G. Biskeborn 2020-11-10 $848,000
10818315 Shorting tolerant tunnel valve head and circuit Robert G. Biskeborn, W. Stanley Czarnecki, Jason Liang 2020-10-27 $6,165,000
10803889 Apparatus with data reader sensors more recessed than servo reader sensor Robert G. Biskeborn 2020-10-13 $4,674,000
10796718 Magnetic recording apparatus having circuits with differing tunnel valve sensors and about the same resistance Robert G. Biskeborn, Robert E. Fontana, Jr. 2020-10-06 $5,751,000
10755732 Apparatus having sensors with hard spacers and low-contact-pressure head-tape interface Robert G. Biskeborn 2020-08-25 $2,454,000
10748560 Apparatus having low-contact-pressure head-tape interface Robert G. Biskeborn 2020-08-18 $3,155,000