Individual holder
TRACHTMAN JOSEPH N
US·5 granted patents·213 citations·filing 1977–2012
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0183US8511820B2Device to measure functions of the eye directlyTRACHTMAN JOSEPH N·Filed 2012·Granted Aug 20, 2013·11 cites·16 claims
- 0266US4533221AMethods and apparatus for accommodation trainingTRACHTMAN JOSEPH N·Filed 1983·Granted Aug 6, 1985·67 cites·64 claims
- 0362US4660945AMethods and apparatus for accommodation trainingTRACHTMAN JOSEPH N·Filed 1986·Granted Apr 28, 1987·61 cites·12 claims
- 0460US5002384AMethods and apparatus for monitoring and training eye positionTRACHTMAN JOSEPH N·Filed 1987·Granted Mar 26, 1991·55 cites·17 claims
- 0546US4162828AApparatus and methods for directly measuring the refraction of the eyeTRACHTMAN JOSEPH N·Filed 1977·Granted Jul 31, 1979·19 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →