Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Calvin S. Lo — 193 Patents

IBM: 192 patents #172 of 70,183Top 1%
Globalfoundries: 1 patents #2,221 of 4,424Top 55%
Saratoga, CA: #15 of 2,933 inventorsTop 1%
California: #595 of 386,348 inventorsTop 1%
Overall (All Time): #3,645 of 4,157,543Top 1%
193 Patents All Time

Issued Patents All Time

Showing 151–175 of 193 patents

Patent #TitleCo-InventorsDate
9001463 Magnetic recording head having protected reader sensors and near zero recessed write poles Robert G. Biskeborn, Jason Liang, Andrew C. Ting 2015-04-07
8988835 Contact recording tunnel magnetoresistive sensor with layer of refractory metal Robert G. Biskeborn 2015-03-24
8964319 Tape media kiss-contact read verification Robert G. Biskeborn, Tak H. Wong, Xu Yan 2015-02-24
8902528 Quasi-statically tilted head having dilated transducer pitch Robert G. Biskeborn 2014-12-02
8861139 Magnetic head with planar outrigger Robert G. Biskeborn, Jason Liang 2014-10-14
8837082 Magnetic recording head having quilted-type coating Robert G. Biskeborn 2014-09-16
8810957 Quasi-statically tilted head having dilated transducer pitch Robert G. Biskeborn 2014-08-19
8797682 Quasi-statically tilted magnetic tape head having backward compatibility Robert G. Biskeborn 2014-08-05
8780496 Device such as magnetic head having hardened dielectric portions Robert G. Biskeborn 2014-07-15
8773810 Adjustable span recording head Robert G. Biskeborn, Gary M. McClelland 2014-07-08
8679733 Patterning process for small devices Robert G. Biskeborn, Cherngye Hwang 2014-03-25
8621910 Wear gauge array for head protective coating Robert G. Biskeborn, W. Stanley Czarnecki, Jason Liang 2014-01-07
8611043 Magnetic head having polycrystalline coating Robert G. Biskeborn, Teya Topuria 2013-12-17
8611044 Magnetic head having separate protection for read transducers and write transducers Robert G. Biskeborn 2013-12-17
8611049 Magnetic heads having magnetic films that are more recessed than insulating films, and systems having such heads Robert G. Biskeborn, Cherngye Hwang, Andrew C. Ting 2013-12-17
8564902 Magnetic head with components separated by insulative portions and electrically coupled together by connective element Robert G. Biskeborn 2013-10-22
8553352 Magnetic tape head having lubricant in recessed portions of a tape bearing surface thereof, and systems having the head Robert G. Biskeborn, Jason Liang 2013-10-08
8547665 Magnetic head having a material formed in one or more recesses extending into the media support surface of at least one of the substrate and the closure Robert G. Biskeborn, Gary M. McClelland 2013-10-01
8542460 Head for tape drive with transversely varying contour Robert G. Biskeborn, Wayne Isami Imaino, Gary M. McClelland 2013-09-24
8526137 Head comprising a crystalline alumina layer Robert G. Biskeborn, Cherngye Hwang, Andrew C. Ting 2013-09-03
8444865 Magnetic recording head coating and method Robert G. Biskeborn, Gary M. Decad, Cherngye Hwang 2013-05-21
8416527 Methods for providing persistent lubrication to a magnetic tape head and systems thereof Robert G. Biskeborn, Jason Liang 2013-04-09
8416526 Magnetic head with textured surfaces Robert G. Biskeborn, Cherngye Hwang, Jason Liang 2013-04-09
8248727 Magnetic head with components separated by insulative portions and electrically coupled together by connective element Robert G. Biskeborn 2012-08-21
8191234 Method of manufacturing a magnetic head with reinforcing islands Robert G. Biskeborn, Cherngye Hwang 2012-06-05