Inventor · disambiguated record
Robert H. Chorman
Also filed as: CHORMAN ROBERT H
4 granted patents·17 citations·filing 2013–2016
72Inventor score
Files withAMERICAN MINE DOOR CO4
Top patents by PatentIndex Score
4 records- 0181US8884760B2Control system for mine ventilation doorAMERICAN MINE DOOR CO·Filed 2013·Granted Nov 11, 2014·10 cites·22 claims
- 0264US9476301B2Mine ventilation door with wings and slidable or pocket personnel doorAMERICAN MINE DOOR CO·Filed 2013·Granted Oct 25, 2016·3 cites·22 claims
- 0363US9181802B2Robust mine ventilation door with single actuation systemAMERICAN MINE DOOR CO·Filed 2013·Granted Nov 10, 2015·4 cites·7 claims
- 0445US10538956B2Mine ventilation door with wings and slidable or pocket personnel doorAMERICAN MINE DOOR CO·Filed 2016·Granted Jan 21, 2020·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →