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USPTO Patent Rankings Data through Dec 31, 2025
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John Ferro — 6 Patents

OPOphthonix: 4 patents #7 of 25Top 30%
E-E-Systems: 1 patents #90 of 229Top 40%
Hyattsville, MD: #25 of 215 inventorsTop 15%
Maryland: #5,557 of 35,612 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
John Ferro has been granted 6 US patents while listed as an inventor at Ophthonix. The first was granted in 1995 and the most recent in January 2014. John Ferro ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list John Ferro in Hyattsville, MD, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8636359 Vision correction lenses Laurence Warden, Andreas W. Dreher, Jagdish M. Jethmalani, Shui T. Lai 2014-01-28
8002407 System for manufacturing an optical lens Laurence Warden, Andreas W. Dreher, Jagdish M. Jethmalani, Shui T. Lai 2011-08-23
7659971 Lensometers and wavefront sensors and methods of measuring aberration Laurence Warden, Andreas W. Dreher, William G. Foote 2010-02-09
7497573 System for manufacturing an optical lens Laurence Warden, Andreas W. Dreher, Jagdish M. Jethmalani, Shui T. Lai 2009-03-03
7234810 System for manufacturing an optical lens Laurence Warden, Andreas W. Dreher, Jagdish M. Jethmalani, Shui T. Lai 2007-06-26
5381596 Apparatus and method of manufacturing a 3-dimensional waveguide 1995-01-17 $3,493,000