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

Michael Alex — 19 Patents

WTWestern Digital Technologies: 7 patents #492 of 3,180Top 20%
HGHGST: 5 patents #429 of 1,677Top 30%
KOKomag: 3 patents #25 of 100Top 25%
W(Western Digital (Fremont): 1 patents #299 of 473Top 65%
HBHgst Netherlands, B.V.: 1 patents #510 of 972Top 55%
Sony: 1 patents #17,321 of 25,231Top 70%
LLLateral Research Limited Liability: 1 patents #41 of 92Top 45%
WMWd Media: 1 patents #83 of 182Top 50%
Milpitas, CA: #261 of 3,192 inventorsTop 9%
California: #31,067 of 386,348 inventorsTop 9%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Michael Alex has been granted 19 US patents while listed as an inventor at Western Digital Technologies. The first was granted in 1997 and the most recent in May 2022. Michael Alex ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Michael Alex in Milpitas, CA, US.

Patents per Year

Patents granted per year, 1997 to 2022Bar chart with a peak of 4 patents in 2015.peak 41997: 1 patents19972002: 1 patents2003: 1 patents20032007: 1 patents2009: 1 patents20092010: 1 patents2012: 3 patents20122013: 1 patents2014: 3 patents20142015: 4 patents2021: 1 patents20212022: 1 patents2022

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11348037 Machine learning-based read channel data detection Xinzhi Xing 2022-05-31 $20,381,000
11080621 Machine learning-based read channel data detection Xinzhi Xing 2021-08-03 $19,776,000
9183859 HAMR writer pole length characterization Bogdan Florin Valcu, David Wachenschwanz, Andreas Moser 2015-11-10 $10,694,000
9183867 Systems and methods for forming implanted capping layers in magnetic media for magnetic recording Gerardo A. Bertero 2015-11-10 $10,694,000
9171575 Data storage device detecting media defects by writing opposite polarity test pattern Gerardo A. Bertero, Mazin Almaqablah 2015-10-27 $9,813,000
9001630 Energy assisted magnetic recording medium capable of suppressing high DC readback noise Gerardo A. Bertero, Christopher B. Wolf, Eric J. Champion 2015-04-07 $8,172,000
8897103 Disk drive calibrating a laser write power for heat assisted magnetic recording 2014-11-25 $9,453,000
8773957 Disk drive destabilizing magnetization of test pattern using head laser to enhance defect detection Eric J. Champion, Kroum S. Stoev 2014-07-08 $12,758,000
8743666 Energy assisted magnetic recording medium capable of suppressing high DC readback noise Gerardo A. Bertero, Christopher B. Wolf, Eric J. Champion 2014-06-03 $21,070,000
8446690 Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization John Contreras, Manfred Ernst Schabes, Xinzhi Xing 2013-05-21
8189281 Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot John Contreras, Nobumasa Nishiyama 2012-05-29
8116021 Synchronized rewriting of data Xiaodong Che, Zhen Jin, Michael Paul Salo 2012-02-14 $116,000
8116031 Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization John Contreras, Manfred Ernst Schabes, Xinzhi Xing 2012-02-14 $116,000
7787201 Method and apparatus for controlling fly-height of a perpendicular-magnetic-recording head in a hard disk drive 2010-08-31 $87,000
7633694 Method and apparatus for quantifying stress and damage in magnetic heads Li Tang 2009-12-15 $89,000
7196860 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation 2007-03-27 $9,260,000
6628466 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation 2003-09-30 $4,964,000
6429984 Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation 2002-08-06
5616218 Modification and selection of the magnetic properties of magnetic recording media through selective control of the crystal texture of the recording layer 1997-04-01 $185,000