Catalyst pretreatment and feeding system for polypropylene production
US-12460023-B2 · Nov 4, 2025 · US
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Hein James E patents
Hein James E is listed as an inventor on 23 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Hein James E |
| Total patents | 23 |
| First publication | Dec 29, 2015 |
| Latest publication | Nov 4, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Methods for chromium catalyst activation using oxygen-enriched fluidization gas
US-12297310-B2 · May 13, 2025 · US
Catalyst slurry mixing process and system
US-12115506-B2 · Oct 15, 2024 · US
Loop slurry reactor cooling processes and systems
US-12076700-B2 · Sep 3, 2024 · US
Loop Slurry Reactor Cooling Processes and Systems
US-2024207803-A1 · Jun 27, 2024 · US
Catalyst Slurry Mixing Process and System
US-2023390718-A1 · Dec 7, 2023 · US
Catalyst slurry mixing process and system
US-11833479-B2 · Dec 5, 2023 · US
System and method for improving dump tank purge time
US-11673975-B2 · Jun 13, 2023 · US
Methods for chromium catalyst activation using oxygen-enriched fluidization gas
US-2023159669-A1 · May 25, 2023 · US
System and method for improving dump tank purge time
US-2023061539-A1 · Mar 2, 2023 · US
Recent patents
Latest publications not already listed above.
Methods for chromium catalyst activation using oxygen-enriched fluidization gas
US-11584806-B2 · Feb 21, 2023 · US
System and method for rapid dump tank heating
US-11578145-B2 · Feb 14, 2023 · US
Methods for chromium catalyst activation using oxygen-enriched fluidization gas
US-2022267485-A1 · Aug 25, 2022 · US
Catalyst Pretreatment and Feeding System for Polypropylene Production
US-2022135710-A1 · May 5, 2022 · US
Loop Slurry Reactor Cooling Processes and Systems
US-2022105489-A1 · Apr 7, 2022 · US
Catalyst pretreatment and feeding system for polypropylene production
US-11254761-B1 · Feb 22, 2022 · US
Catalyst Slurry Mixing Process and System
US-2021299618-A1 · Sep 30, 2021 · US
System and Method for Rapid Dump Tank Heating
US-2021261694-A1 · Aug 26, 2021 · US
System and method for rapid dump tank heating
US-11021549-B2 · Jun 1, 2021 · US
System and Method for Rapid Dump Tank Heating
US-2020354483-A1 · Nov 12, 2020 · US
Energy efficient polyolefin process
US-9610558-B2 · Apr 4, 2017 · US
Energy efficient polyolefin process
US-2016101399-A1 · Apr 14, 2016 · US
Energy efficient polyolefin process
US-9221920-B2 · Dec 29, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Chevron Phillips Chemical Co Lp | 21 |
| Chevron Phillips Chemical Co | 2 |
| Chevron Philips Chemical Company Lp | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B01J19/1837 | 14 |
| B01J8/0015 | 13 |
| C08F2/01 | 12 |
| C08F10/00 | 12 |
| C08F4/78 | 8 |