Inventor
Andrew Browne Helvenston
Inventor
Houston, TX, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling50%
F16KValves19%
Y10TTechnical subjects covered by former us classification13%
B24BMachines, devices, or processes for grinding or polishing6%
B24DTools for grinding, buffing or sharpening6%
F16LPipes6%
PatentTitleYear
10,767,435Slip hanger assembly202010,584,549Coiled tubing split-type running and retrievable clamp tool202010,253,589Offset adjustment rings for wellhead orientation201910,107,413Self-contained gate valve column loading prevention mechanism201810,036,485Dual seal fire safe stem packing orientation20189,695,663'Combination fluid pumping sub and hanger lockdown tool'20179,617,820'Flexible emergency hanger and method of installation'20179,476,526'Dual seal fluid fitting'20169,458,699'Slotted wellhead and multibowl polishing tool with woven polishing belt'20169,347,585'Dual seal fire safe stem packing orientation'2016Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2016–2020Patents assigned to GE OIL & GAS PRESSURE CONTROL LP (10)· patent assignee history
2016–2020Based in Houston, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GE OIL & GAS PRESSURE CONTROL LP | 10 | 2016–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 10 | 2016–2020 |