Inventor
Ahmet Duman
Inventor
Houston, TX, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling40%
F04BPositive-displacement machines for liquids20%
E02FDredging10%
E21CMining or quarrying10%
G05DSystems for controlling or regulating non-electric variables10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
10,519,732Mud pump annular friction pressure control system and method201910,400,421Systems and methods for backflushing a riser transfer pipe20199,534,458'Hydraulic cushion'20179,175,528'Decompression to fill pressure'20159,016,381'Mudline managed pressure drilling and enhanced influx detection'2015Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2015–2019Patents assigned to HYDRIL USA DISTRIB LLC (4)· patent assignee history
2015Patents assigned to DIETZ DAVID ALBERT (1)· patent assignee history
2015Patents assigned to DUMAN AHMET (1)· patent assignee history
2015Patents assigned to HYDRIL USA MFG LLC (1)· patent assignee history
2015Patents assigned to JUDGE ROBERT ARNOLD (1)· patent assignee history
2015–2019Based in Houston, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HYDRIL USA DISTRIB LLC | 4 | 2015–2019 |
| DIETZ DAVID ALBERT | 1 | 2015 |
| DUMAN AHMETself | 1 | 2015 |
| HYDRIL USA MFG LLC | 1 | 2015 |
| JUDGE ROBERT ARNOLD | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 5 | 2015–2019 |