DS

Duane Shotwell

HC Hughes Tool Company: 2 patents #44 of 224Top 20%
HU Hughes Tool Company - Usa: 1 patents #11 of 34Top 35%
📍 Conroe, TX: #79 of 788 inventorsTop 15%
🗺 Texas: #11,465 of 125,132 inventorsTop 10%
Overall (All Time): #371,157 of 4,157,543Top 9%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
11549312 Reamer with cutting inserts for use in drilling operations 2023-01-10
11230889 Trimodal reamer for use in drilling operations 2022-01-25
11125018 Reamer cutting insert for use in drilling operations 2021-09-21
10947786 Roller reamer with mechanical face seal 2021-03-16
10837237 Roller reamer with labyrinth seal assembly 2020-11-17
10718165 Roller reamer integral pressure relief assembly 2020-07-21
10704331 Reamer for use in drilling operations 2020-07-07
10502000 Reamer cutting insert for use in drilling operations 2019-12-10
10066440 Reamer for use in drilling operations 2018-09-04
10000973 Reamer for use in drilling operations 2018-06-19
4887675 Earth boring bit with pin mounted compensator 1989-12-19
4613004 Earth boring bit with labyrinth seal protector 1986-09-23
4600064 Earth boring bit with bearing sleeve Stanley R. Scales, Gerald O. Atkinson 1986-07-15