Inventor · disambiguated record
Preston B. Lofgren
Also filed as: LOFGREN PRESTON B
2 granted patents·1 citations·filing 2014–2017
35Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0149US10030468B2Radially expandable ratcheting body lock ring for production packer releaseBAKER HUGHES INC·Filed 2014·Granted Jul 24, 2018·1 cites·19 claims
- 0245US10465470B2Radially expandable ratcheting body lock ring for production packer releaseBAKER HUGHES A GE CO LLC·Filed 2017·Granted Nov 5, 2019·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →