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USPTO Patent Rankings Data through Dec 31, 2025
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Earl A. Cunningham — 48 Patents

IBM: 46 patents #1,927 of 70,183Top 3%
HGHGST: 1 patents #1,167 of 483Top 245%
Rochester, MN: #110 of 3,042 inventorsTop 4%
Minnesota: #954 of 52,454 inventorsTop 2%
Overall (All Time): #57,596 of 4,157,543Top 2%
48 Patents All Time
Earl A. Cunningham has been granted 48 US patents while listed as an inventor at IBM. The first was granted in 1981 and the most recent in July 2004. Earl A. Cunningham ranks #57,596 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Earl A. Cunningham in Rochester, MN, US.

Patents per Year

Patents granted per year, 1981 to 2004Bar chart with a peak of 8 patents in 1999.peak 81981: 2 patents19811984: 1 patents1985: 1 patents19851986: 1 patents1989: 2 patents19891990: 2 patents1993: 1 patents19931994: 1 patents1995: 4 patents19951996: 5 patents1997: 4 patents19971998: 7 patents1999: 8 patents19992000: 7 patents2001: 1 patents20012004: 1 patents2004

Issued Patents All Time

Showing 1–25 of 48 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6760184 Compact servo pattern optimized for M-R heads 2004-07-06 $276,000
6307705 Method and apparatus for reducing track switch latency in a disk drive Clark A. Anderson, Todd B. Anderson, Gerald L. Cadloni, Michael Hicken, Daniel D. Reno +1 more 2001-10-23
6079044 Method and error correcting code (ECC) apparatus for storing predefined information with ECC in a direct access storage device Richard Greenberg, Michael J. Shea 2000-06-20 $29,799,000
6057977 Compact servo pattern optimized for M-R heads 2000-05-02 $31,039,000
6043942 Selectable write precompensation in a direct access storage device (DASD) Peter J. Windler 2000-03-28 $43,528,000
6040955 Self servo writing file Dana H. Brown, Thomas C. Christensen, Wayne A. Rogelstad 2000-03-21 $35,798,000
6035351 Storage of user defined type file data in corresponding select physical format Russell A. Billings, Dana H. Brown, Richard Greenberg, Hal Hjalmar Ottesen 2000-03-07 $24,867,000
6023389 Method and apparatus for writing servo bursts with compensation for erase bands in a direct access storage device 2000-02-08 $33,742,000
6014277 Multipath channel apparatus and method using offset parameters to compensate for amplitude and timing errors in data storage devices Thomas C. Christensen 2000-01-11 $34,320,000
6005742 Method and apparatus for controlling a multiple-stage actuator for a disk drive Long-Sheng Fan, Hal Hjalmar Ottesen, Timothy C. Reiley 1999-12-21 $22,815,000
6002540 Method and apparatus for rotary actuator arc compensation correction in a direct access storage device Kevin J. Erickson, Hal Hjalmar Ottesen 1999-12-14 $24,869,000
5978163 Circuit and method for optimizing bias supply in a magnetoresistive head based on temperature 1999-11-02 $18,540,000
5949603 Self servo writing file using the widest head Dana H. Brown, Thomas C. Christensen, Wayne A. Rogelstad 1999-09-07 $30,723,000
5936788 Method and apparatus for ramp load and unload Zine-Eddine Boutaghou, Hal Hjalmar Ottesen 1999-08-10 $20,467,000
5923502 Magneto-resistive head including a selectively placed low-reluctance path between shields Thomas C. Christensen, Jodie A. Christner, Jay Mosbrucker 1999-07-13 $29,937,000
5920441 Method and apparatus for controlling a multiple-stage actuator for a disk drive Long-Sheng Fan, Hal Hjalmar Ottesen, Timothy C. Reiley 1999-07-06 $40,075,000
5859739 Magnetic data reading apparatus and method using inductive and magnetoresistive heads Jodie A. Christner 1999-01-12 $24,935,000
5854722 Method and apparatus for rotary actuator arc compensation correction in a direct access storage device Kevin J. Erickson, Hal Hjalmar Ottesen 1998-12-29 $61,066,000
5831786 Disk drive having position sensor for ramp load and unload, and method for its use Zine-Eddine Boutaghou, Hal Hjalmar Ottesen 1998-11-03 $14,328,000
5790334 Circuit and method for optimizing bias supply in a magnetoresistive head based on the thermal properties of the MR head itself 1998-08-04 $10,071,000
5790341 Method and apparatus for reducing servo interference in a magneto-resistive head using skew between head and servo pattern Jodie A. Christner, Thomas C. Christensen, David Timothy Flynn, Mark Andrew Bergquist, Mark David Hagen 1998-08-04 $10,071,000
5790352 Magnetoresistive head with asymmetric leads 1998-08-04 $10,071,000
5783981 Magnetic reinitialization of thin film magnetoresistive reproducing heads at the suspension level of media drive manufacturing Samir Elias Abboud, Nickolas Christopher Apuzzo, Jeffrey Bernard Brown, David Hannon, Raymond P. Mallette +3 more 1998-07-21 $12,143,000
5748415 Magnetoresistive head with a magnetoresistive film shaped to provide an improved read sensitivity profile Jodie A. Christner 1998-05-05 $15,329,000
5682274 Method and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk medium Dana H. Brown, Kevin J. Erickson, Richard H. Estry, Thomas Glaser, Mark David Hagen +3 more 1997-10-28 $23,423,000