Inventor · disambiguated record
Melvin O. Castillo
Also filed as: CASTILLO MELVIN O
2 granted patents·3 pending applications·20 citations·filing 2007–2019
59Inventor score
Top patents by PatentIndex Score
5 records- 0184US8584705B2Bidirectional sleeved/plug ball check valveHUGHES RICHARD C·Filed 2010·Granted Nov 19, 2013·15 cites·13 claims
- 0277US10436335B2Valves with multi-directional ball checkHUGHES RICHARD C·Filed 2016·Granted Oct 8, 2019·5 cites·9 claims
- 0345US2015129043A1Valves with multi-directional ball checkHUGHES RICHARD C·Filed 2013·Application pending·0 cites
- 0444US2020088311A1Methods of use & valves with multi-directional ball checkHERTENBERGER JAMES C·Filed 2019·Application pending·0 cites
- 0532US2009056438A1Gage Cock Ball ValveHUGHES RICHARD C·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →