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

Benjamin N. Eldridge — 233 Patents

FOFormfactor: 224 patents #1 of 177Top 1%
IBM: 1 patents #44,878 of 70,183Top 65%
Danville, CA: #1 of 1,210 inventorsTop 1%
California: #416 of 386,348 inventorsTop 1%
Overall (All Time): #2,394 of 4,157,543Top 1%
233 Patents All Time
Benjamin N. Eldridge has been granted 233 US patents while listed as an inventor at Formfactor. The first was granted in 1994 and the most recent in December 2025. Benjamin N. Eldridge ranks #2,394 of 4,157,543 US inventors in our database (top 0.06%). Patent records list Benjamin N. Eldridge in Danville, CA, US.

Issued Patents All Time

Showing 1–25 of 233 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12496580 Apparatuses and methods for measuring DNA/RNA production in biochips Babak Sanii, Xianghui Wen, Adib Ahmadzadegan, Ping-Hsu Chen, Jodi Tsu-An Loo +3 more 2025-12-16
12492394 Microfluidic apparatus and methods of use thereof Xianghui Wen 2025-12-09
12448618 Microfluidic apparatus and methods of use thereof Xianghui Wen 2025-10-21
11460485 Direct metalized guide plate Jason William Cosman, Eric Hill, John Ebner, Edin Sijercic 2022-10-04 $20,644,000
10598697 Shielding for vertical probe heads 2020-03-24 $11,539,000
10578649 Vertical probe array having a tiled membrane space transformer Masanori Watanabe, Scott Kuhnert, Jeffrey Coussens 2020-03-03 $12,697,000
10527647 Probe head with inductance reducing structure Edin Sijercic, Eric Hill, John Ebner 2020-01-07 $13,851,000
10266402 Contactor devices with carbon nanotube probes embedded in a flexible film and processes of making such Onnik Yaglioglu, Alexander H. Slocum 2019-04-23 $15,443,000
10132833 Multipath electrical probe and probe assemblies with signal paths through secondary paths between electrically conductive guide plates 2018-11-20 $13,821,000
9958476 Floating nest for a test socket 2018-05-01 $10,862,000
9702904 Non-linear vertical leaf spring Keith J. Breinlinger, Eric D. Hobbs, Michael J. Armstrong, John K. Gritters 2017-07-11 $9,660,000
9030222 Sharpened, oriented contact tip structures Gary W. Grube, Igor Y. Khandros, Alex Madsen, Gaetan L. Mathieu 2015-05-12 $5,854,000
8896336 Testing techniques for through-device vias 2014-11-25 $5,032,000
8697301 Fuel cell using carbon nanotubes John K. Gritters, Onnik Yaglioglu 2014-04-15 $2,965,000
8513942 Method of forming a probe substrate by layering probe row structures and probe substrates formed thereby Gaetan L. Mathieu 2013-08-20 $979,000
8513969 Apparatus and method of testing singulated dies Thomas H. Dozier, II, David Hsu, Igor Y. Khandros, Charles A. Miller 2013-08-20 $979,000
8485418 Method of wirebonding that utilizes a gas flow within a capillary from which a wire is played out Gary W. Grube, Igor Y. Khandros, Gaetan L. Mathieu 2013-07-16 $3,618,000
8476538 Wiring substrate with customization layers Gaetan L. Mathieu 2013-07-02 $2,915,000
8427183 Probe card assembly having an actuator for bending the probe substrate Gaetan L. Mathieu, Gary W. Grube 2013-04-23 $1,194,000
8383958 Method to build robust mechanical structures on substrate surfaces Gary W. Grube, Gaetan L. Mathieu, Chadwick D. Sofield 2013-02-26 $2,456,000
8373428 Probe card assembly and kit, and methods of making same Gary W. Grube, Igor Y. Khandros, Gaetan L. Mathieu 2013-02-12 $2,551,000
8354855 Carbon nanotube columns and methods of making and using carbon nanotube columns as probes Treliant Fang, Gaetan L. Mathieu, Onnik Yaglioglu 2013-01-15 $2,548,000
8203351 Probing apparatus with guarded signal traces Carl V. Reynolds, Takao Saeki, Yoichi Urakawa 2012-06-19 $1,433,000
8130007 Probe card assembly with carbon nanotube probes having a spring mechanism therein John K. Gritters, Rodney Ivan Martens, Alexander H. Slocum, Onnik Yaglioglu 2012-03-06 $1,087,000
8033838 Microelectronic contact structure Gary W. Grube, Igor Y. Khandros, Gaetan L. Mathieu 2011-10-11 $3,242,000