Inventor · disambiguated record
Duane Shotwell
Also filed as: SHOTWELL DUANE · SHOTWELL DUANE E
13 granted patents·3 pending applications·82 citations·filing 1985–2020
88Inventor score
Files withCHENGDU BEST DIAMOND BIT CO LTD5SHOTWELL DUANE5HUGHES TOOL CO3CHENGDU BEST DIAMOMD BIT CO LTD1CHENGDU DIAMOND BIT CO LTD1
Top patents by PatentIndex Score
16 records- 0183US10502000B2Reamer cutting insert for use in drilling operationsSHOTWELL DUANE·Filed 2016·Granted Dec 10, 2019·4 cites·23 claims
- 0282US4600064AEarth boring bit with bearing sleeveHUGHES TOOL CO·Filed 1985·Granted Jul 15, 1986·41 cites·10 claims
- 0373US10947786B2Roller reamer with mechanical face sealCHENGDU BEST DIAMOND BIT CO LTD·Filed 2017·Granted Mar 16, 2021·2 cites·20 claims
- 0470US10000973B2Reamer for use in drilling operationsCHENGDU BEST DIAMOND BIT CO LTD·Filed 2014·Granted Jun 19, 2018·4 cites·13 claims
- 0561US4613004AEarth boring bit with labyrinth seal protectorHUGHES TOOL CO·Filed 1985·Granted Sep 23, 1986·22 cites·2 claims
- 0660US11125018B2Reamer cutting insert for use in drilling operationsCHENGDU BEST DIAMOND BIT CO LTD·Filed 2019·Granted Sep 21, 2021·0 cites·16 claims
- 0755US11549312B2Reamer with cutting inserts for use in drilling operationsCHENGDU BEST DIAMOMD BIT CO LTD·Filed 2019·Granted Jan 10, 2023·0 cites·22 claims
- 0851US11230889B2Trimodal reamer for use in drilling operationsCHENGDU BEST DIAMOND BIT CO LTD·Filed 2019·Granted Jan 25, 2022·0 cites·19 claims
- 0951US10837237B2Roller reamer with labyrinth seal assemblySHOTWELL DUANE·Filed 2017·Granted Nov 17, 2020·0 cites·18 claims
- 1047US10718165B2Roller reamer integral pressure relief assemblySHOTWELL DUANE·Filed 2017·Granted Jul 21, 2020·0 cites·25 claims
- 1143US10066440B2Reamer for use in drilling operationsCHENGDU BEST DIAMOND BIT CO LTD·Filed 2014·Granted Sep 4, 2018·0 cites·14 claims
- 1242US2016123088A1Reamer for Use in Drilling OperationsSHOTWELL DUANE·Filed 2014·Application pending·0 cites
- 1342US2016123089A1Reamer for Use in Drilling OperationsSHOTWELL DUANE·Filed 2014·Application pending·0 cites
- 1439US10704331B2Reamer for use in drilling operationsPATRICK REILLY PATRICK·Filed 2017·Granted Jul 7, 2020·0 cites·23 claims
- 1538US2021270089A1Earth-boring drill bit with chisel cutterCHENGDU DIAMOND BIT CO LTD·Filed 2020·Application pending·0 cites
- 1635US4887675AEarth boring bit with pin mounted compensatorHUGHES TOOL CO·Filed 1988·Granted Dec 19, 1989·9 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Duane Shotwell files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →