Inventor · disambiguated record
Maria R. Contreras
Also filed as: CONTRERAS MARIA R
3 granted patents·14 citations·filing 2009–2014
63Inventor score
Technology areasE21B
Top patents by PatentIndex Score
3 records- 0177US9422788B2Straight-bore back pressure valveCAMERON INT CORP·Filed 2013·Granted Aug 23, 2016·5 cites·31 claims
- 0266US8636058B2Straight-bore back pressure valveNGUYEN DENNIS P·Filed 2009·Granted Jan 28, 2014·9 cites·32 claims
- 0348US9725969B2Positive lock systemCAMERON INT CORP·Filed 2014·Granted Aug 8, 2017·0 cites·23 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →