Ram blowout preventer piston rod subassembly
US-9850730-B2 · Dec 26, 2017 · US
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Stringfellow Richard Lee patents
Stringfellow Richard Lee is listed as an inventor on 4 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Stringfellow Richard Lee |
| Total patents | 4 |
| First publication | Jan 21, 2016 |
| Latest publication | Dec 26, 2017 |
Notable patents
Publications ranked by popularity score, then publication date.
Blind shear ram
US-9822602-B2 · Nov 21, 2017 · US
Blind shear ram
US-2016097250-A1 · Apr 7, 2016 · US
Ram Blowout Preventer Piston Rod Subassembly
US-2016017685-A1 · Jan 21, 2016 · US
Recent patents
Latest publications not already listed above.
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Hydril Usa Distrib Llc | 4 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B33/062 | 2 |
| E21B33/061 | 2 |
| E21B33/063 | 2 |
| E21B33/06 | 1 |