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

Joseph Chang — 15 Patents

Samsung: 11 patents #12,277 of 75,807Top 20%
PAPhilips Electronics North America: 2 patents #192 of 725Top 30%
Philips: 1 patents #3,761 of 7,731Top 50%
PAPaceco: 1 patents #15 of 32Top 50%
New Haven, CT: #53 of 1,003 inventorsTop 6%
Connecticut: #2,943 of 34,797 inventorsTop 9%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Joseph Chang has been granted 15 US patents while listed as an inventor at Samsung. The first was granted in 1998 and the most recent in September 2010. Joseph Chang ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Joseph Chang in New Haven, CT, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7800864 Actuator latch apparatus having protrusion insertedly coupled to counterbalance for disk drive Tae-Soo Kim 2010-09-21
7715150 Apparatus and method for head gimbal assembly sharing power to slider amplifier and micro-actuator in a hard disk drive Brian D. Strom, Na Young Kim, Sung Chang Lee, Vinod Sharma 2010-05-11
7706107 Method and apparatus for flexible printed circuit bracket including crash stop and/or air block in a hard disk drive Gregory Minh Tran, Tho Pham, Shiao-Hua Chen 2010-04-27
7535679 Disk drive actuator latch apparatus having elastic damping arm Tae-Soo Kim 2009-05-19
7369367 Disk drive voice coil motor yoke assembly having proximity latch magnet pair attracting and holding voice coil bias steel therebetween Lam Tran, Tho Pham 2008-05-06
7256961 Damped spindle motor flange for the disk pack in a hard disk drive Shiao-Hua Chen, Frank Morris 2007-08-14
7248441 Disk drive actuator parking method using impact rebound crash stop with bias tab and pusher and crash stop faces Ron Kirkish, Vinod Sharma, Frank Morris, Bipin V. Gami 2007-07-24
7012785 Method and apparatus for head slider and suspension reducing air flow turbulence about the slider when accessing a rotating disk in a disk drive Vinod Sharma, Debasis Baral 2006-03-14
6967822 Disk drive actuator impact rebound crash stop with bias tab and pusher and crash stop faces Ron Kirkish, Vinod Sharma, Frank Morris, Bipin V. Gami 2005-11-22
6771451 Auto centering of disks on a hard disk drive Frank Morris, Scott Tran 2004-08-03
6747843 Ramp design for reducing read-write head track positioning errors Vinod Sharma, Hyung Jai Lee 2004-06-08
6731468 Pawl latch for ramp loading hard disk drivers Kelly Williams, Ron Kirkish 2004-05-04
6541925 Resonant converter circuit with suppression of transients during changes in operating condition Chin Chang, Gert W. Bruning 2003-04-01 $658,000
6016257 Voltage regulated power supply utilizing phase shift control Chin Chang, Gert W. Bruning 2000-01-18
5781418 Switching scheme for power supply having a voltage-fed inverter Chin Chang 1998-07-14