Individual holder
JOHNSON MARK R
3 granted patents·4 pending applications·107 citations·filing 1978–2017
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
7 records- 0195US4250923AShift actuator for a multi-speed transmissionJOHNSON MARK R·Filed 1978·Granted Feb 17, 1981·77 cites·10 claims
- 0287US8011364B2Exhalation valve for use in an underwater breathing deviceJOHNSON MARK R·Filed 2008·Granted Sep 6, 2011·19 cites·19 claims
- 0378US8678870B2Retractable swim finsJOHNSON MARK R·Filed 2010·Granted Mar 25, 2014·11 cites·25 claims
- 0453US2010075554A1Swim finsJOHNSON MARK R·Filed 2009·Application pending·0 cites
- 0549US2008099012A1Snorkel clipJOHNSON MARK R·Filed 2007·Application pending·0 cites
- 0645US2012252289A1Swim finsJOHNSON MARK R·Filed 2012·Application pending·0 cites
- 0743US2018042409A1Ventilated pillowJOHNSON MARK R·Filed 2017·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →