Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Darrell D. Palmer — 23 Patents

IBM: 18 patents #6,142 of 70,183Top 9%
WTWestern Digital Technologies: 5 patents #666 of 3,180Top 25%
San Jose, CA: #2,796 of 32,062 inventorsTop 9%
California: #24,547 of 386,348 inventorsTop 7%
Overall (All Time): #178,160 of 4,157,543Top 5%
23 Patents All Time
Darrell D. Palmer has been granted 23 US patents while listed as an inventor at IBM. The first was granted in 1991 and the most recent in July 2009. Darrell D. Palmer ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list Darrell D. Palmer in San Jose, CA, US.

Patents per Year

Patents granted per year, 1991 to 2009Bar chart with a peak of 5 patents in 1999.peak 51991: 1 patents19911997: 2 patents1998: 3 patents19981999: 5 patents2001: 5 patents20012002: 1 patents2003: 1 patents20032004: 1 patents2006: 1 patents20062007: 1 patents2009: 2 patents2009

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7567410 Flexure including a heat sink and a dielectric layer under trace termination pads Yiduo Zhang, Drew B. Lawson, Tzong-Shii Pan, Yih-Jen D. Chen 2009-07-28 $88,394,000
7477488 Head suspension with a reinforced limiter tab Yiduo Zhang 2009-01-13 $9,227,000
7193819 Method of assembling a disk drive including actuating a shipping comb to bend a suspension vertically to facilitate a merge tool Yih-Jen D. Chen, Drew B. Lawson, Serge Hauert 2007-03-20 $10,673,000
7006330 Head stack assembly including a ground conductive pad for grounding a slider to a gimbal Jai N. Subrahmanyam 2006-02-28 $8,145,000
6801402 ESD-protected head gimbal assembly for use in a disk drive Jai N. Subrahmanyam, Jack M. Chue 2004-10-05 $4,411,000
6539609 Method of forming a head gimbal assembly A. David Erpelding, Oscar J. Ruiz, Surya Pattanaik 2003-04-01 $11,931,000
6351348 Minimal stiffness conductors for a head gimbal assembly A. David Erpelding, Oscar J. Ruiz, Surya Pattanaik 2002-02-26 $30,939,000
6282064 Head gimbal assembly with integrated electrical conductors A. David Erpelding, Oscar J. Ruiz, Surya Pattanaik 2001-08-28 $18,210,000
6278585 Transducer suspension termination system Stephen A. O. Olson, Anthony Vesci 2001-08-21 $21,309,000
6243235 Transducer suspension system with limiter Ta-Chang Fu, Tzong-Shii Pan 2001-06-05 $46,299,000
6219202 Slider suspension assembly and method for attaching a slider to a suspension in a data-recording disk file including a flexible integrated cable having an aperture therein for permitting electrical contact 2001-04-17 $20,042,000
6181527 Transducer suspension system including a frequency dependent shunt John Contreras, Klaas Bevend Klaassen 2001-01-30 $13,187,000
5955176 Integrated suspension using a high strength conductive material A. David Erpelding, Surya Pattanaik, Oscar J. Ruiz 1999-09-21 $27,467,000
5892637 Multi-piece integrated suspension assembly for a magnetic storage system William Woodrow Brooks, Jr., Wesley L. Hillman, Randall George Simmons, Steven Harry Voss, Wing C. Shum 1999-04-06 $23,706,000
5889636 Electrical connection for slider/suspension assembly Satya Prakash Arya, A David Erpelding, Tzong-Shii Pan, Surya Pattanaik, Victor Wing Chun Shum +1 more 1999-03-30 $21,009,000
5875071 Planar HGA for Pico/Nano slider A. David Erpelding, Surya Pattanaik, Oscar J. Ruiz 1999-02-23 $8,993,000
5872687 Transducer suspension system Satya Prakash Arya, A. David Erpelding, Surya Pattanaik 1999-02-16 $10,802,000
5781379 Single beam flexure for a head gimbal assembly A. David Erpelding, Oscar J. Ruiz, Surya Pattanaik 1998-07-14 $15,917,000
5768060 Low pofile radially and axially preloaded ball bearing for actuator pivot David W. Albrecht, David Harwood McMurtry, Kirk B. Price, Oscar J. Ruiz 1998-06-16 $7,430,000
5739982 Laser treatment of head gimbal assembly components Satya Prakash Arya, Surya Pattanaik, Mathew Kayhan Shafe, Randall George Simmons 1998-04-14 $13,289,000
5680274 Integrated suspension for an information storage system having electrostatic discharge protection 1997-10-21 $16,513,000
5668684 Electrical interconnect for a head/arm assembly of computer disk drives A. David Erpelding, Surya Pattanaik 1997-09-16 $12,261,000
4996623 Laminated suspension for a negative pressure slider in a data recording disk file A. David Erpelding, Richard K. Wilmer 1991-02-26 $17,944,000