Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert Caldeira — 3 Patents

QUQuantum: 2 patents #205 of 703Top 30%
Santa Cruz, CA: #801 of 1,911 inventorsTop 45%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert Caldeira has been granted 3 US patents while listed as an inventor at Quantum. The first was granted in 1994 and the most recent in May 2011. Robert Caldeira ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert Caldeira in Santa Cruz, CA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7945140 Apparatus and method for storing and retrieving digital real time signals in their native format Laurent Aubry, Tain-Shain Lee 2011-05-17
5396384 Hard disk drive architecture John C. Fravel, Richard G. Ramsdell, Romeo N. Nolasco 1995-03-07 $7,049,000
5282100 Disk drive with reduced acoustic noise Thomas A. Tacklind, Timothy E. Boyle 1994-01-25 $8,081,000