Inventor · disambiguated record
John J. Prehn
Also filed as: PREHN JOHN J
5 granted patents·1 pending application·16 citations·filing 2012–2015
73Inventor score
Top patents by PatentIndex Score
6 records- 0187US9045919B2Pneumatic door opening and security systemARAGON DANIEL M·Filed 2012·Granted Jun 2, 2015·9 cites·16 claims
- 0269US10066434B2Insulated overhead doorCOLD CHAIN LLC·Filed 2015·Granted Sep 4, 2018·2 cites·20 claims
- 0366US9151084B2Insulated overhead doorWACHTELL PETER J·Filed 2012·Granted Oct 6, 2015·5 cites·19 claims
- 0457US2015225991A1Pneumatic door opening and security systemCOLD CHAIN LLC·Filed 2015·Application pending·0 cites
- 0542US8887442B2System for allowing a loading dock door to release from a trackCOLD CHAIN LLC·Filed 2013·Granted Nov 18, 2014·0 cites·14 claims
- 0640US9045924B2Breakaway loading dock door systemCOLD CHAIN LLC·Filed 2014·Granted Jun 2, 2015·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →