Diversion plunger for reciprocating rod pump
US-10731446-B2 · Aug 4, 2020 · US
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Stachowiak John E patents
Stachowiak John E is listed as an inventor on 8 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Stachowiak John E |
| Total patents | 8 |
| First publication | Jul 21, 2016 |
| Latest publication | Aug 4, 2020 |
Notable patents
Publications ranked by popularity score, then publication date.
Subsurface reciprocating pump for gassy and sandy fluids
US-10450847-B2 · Oct 22, 2019 · US
On-off tool for sucker rod string
US-10273762-B2 · Apr 30, 2019 · US
Centrifugal separator for downhole pump
US-10107088-B2 · Oct 23, 2018 · US
Subsurface Reciprocating Pump for Gassy and Sandy Fluids
US-2018298736-A1 · Oct 18, 2018 · US
Centrifugal Separator for Downhole Pump
US-2016251951-A1 · Sep 1, 2016 · US
Diversion Plunger for Reciprocating Rod Pump
US-2016237796-A1 · Aug 18, 2016 · US
On-Off Tool for Sucker Rod String
US-2016208564-A1 · Jul 21, 2016 · 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 |
|---|---|
| Weatherford Tech Holdings Llc | 7 |
| Weatherford Technology Holdings Llc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F04B47/02 | 4 |
| E21B43/127 | 4 |
| F04B53/20 | 2 |
| F04B53/166 | 2 |
| F04B53/143 | 2 |