Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Joseph A. Perlas — 3 Patents

WTWestern Digital Technologies: 3 patents #968 of 3,180Top 35%
San Jose, CA: #14,517 of 32,062 inventorsTop 50%
California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,522,249 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9129639 Method of imbalance correction using a grooved disk clamp Jambunathan Vangal-Ramamurthy 2015-09-08
9114431 Device for faulty item rejection Dean Tarrant 2015-08-25
8780491 Method of imbalance correction using a grooved disk clamp Jambunathan Vangal-Ramamurthy 2014-07-15