Breakaway obturator for downhole
US-10053945-B2 · Aug 21, 2018 · US
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Key John patents
Key John is listed as an inventor on 5 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Key John |
| Total patents | 5 |
| First publication | Oct 15, 2015 |
| Latest publication | Aug 21, 2018 |
Notable patents
Publications ranked by popularity score, then publication date.
Pressure activated down hole systems and methods
US-9476273-B2 · Oct 25, 2016 · US
Breakway obturator for downhole tools
US-2016265302-A1 · Sep 15, 2016 · US
Multiple ramp compression packer
US-9376886-B2 · Jun 28, 2016 · US
Multiple ramp compression packer
US-2015292295-A1 · Oct 15, 2015 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Halliburton Energy Services Inc | 5 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B23/06 | 3 |
| E21B33/128 | 3 |
| E21B33/12 | 3 |
| E21B2200/06 | 3 |
| E21B34/142 | 2 |