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For the Inventor, By the Inventor

The Woodlands, TX, United States of America

Chevron Phillips Chemical Company LP


USPTO Granted Patents = 1,152



Trademarks = 71

Forward Citations = 12,977

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535 inventors (with patents filed for the assignee):

goldMedal Max P McDaniel (299 out of 542 patents)

silverMedal Qing R Yang (247 out of 258 patents)

bronzeMedal Kathy S Clear (102 out of 103 patents)

4.  Eric D Schwerdtfeger (75 out of 75 patents)

5.  Youlu Yu (73 out of 75 patents)

6.  Scott E Kufeld (70 out of 83 patents)

7.  Jeremy M Praetorius (68 out of 68 patents)

8.  John D Hottovy (66 out of 85 patents)

9.  Elizabeth Ann Benham (66 out of 160 patents)

10.  Mark L Hlavinka (62 out of 66 patents)

11.  Tony R Crain (61 out of 65 patents)

12.  Joel L Martin (60 out of 121 patents)

13.  Carlos A Cruz (58 out of 58 patents)

14.  Ashish M Sukhadia (56 out of 67 patents)

15.  Brooke L Small (53 out of 54 patents)


Core Competencies:
Gas Recovery
Aromatization Catalyst
Reactor Fouling Control
Polypropylene Production
Chromium Catalysts
Metallocene Catalyst Systems
Polyethylene Production
Alcohol Production
Polyolefin Polymerization
Fluorided Solid Oxides
Pyrolysis of Plastic Waste
Dual Catalyst Systems

1,152 patents:

1. 12502656 - Methods of chromium catalyst activation to reduce gels and improve melt index potential (2025-12-23),
2. 12486980 - Vent gas recovery with flare control during a flare event (2025-12-02),
3. 12473498 - In-reactor activation of a high chloride aromatization catalyst (2025-11-18),
4. 12466900 - Loop slurry periodogram control to prevent reactor fouling and reactor shutdowns (2025-11-11),
5. 12460023 - Catalyst pretreatment and feeding system for polypropylene production (2025-11-04),
6. 12459547 - Hopper car outlet gate mechanical flap to prevent pellet loss (2025-11-04),
7. 12441671 - Metal-containing ionic liquids with reduced viscosity (2025-10-14),
8. 12435256 - Combination clay stabilizer having an alkali metal asphalt sulfonate and quaternary ammonium salt (2025-10-07),
9. 12435021 - Chromium-catalyzed production of alcohols from hydrocarbons in the presence of oxygen (2025-10-07),
10. 12435016 - Flexible benzene production via selective-higher-olefin oligomerization of ethylene (2025-10-07),
11. 12428500 - Multi-reactor system and method for production of polyethylene and ethylene co-polymers (2025-09-30),
12. 12421331 - Systems and methods for chromium catalyst activation (2025-09-23),
13. 12404357 - Dual metallocene bimodal HDPE resins with improved stress crack resistance (2025-09-02),
14. 12403454 - Methods of chromium catalyst activation to reduce gels and improve melt index potential (2025-09-02),
15. 12370536 - Hydrocyclone modification of catalyst system components for use in olefin polymerization (2025-07-29),
Chevron Phillips Chemical Company LP is one of the world's top producers of olefins and polyolefins and a leading supplier of aromatics, alpha olefins, styrenics, specialty chemicals, plastic piping, and polymer resins. With over 50 years of experience, they provide innovative and sustainable solutions to customers in various industries, including packaging, electronics, automotive, construction, and healthcare.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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1,152 Patents

#1 in The Woodlands, TX

#31 in Texas

#434 in US

#868 in the World

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The Woodlands, TX, United States of America

Chevron Phillips Chemical Company LP

Forward Citations = 12,977

535 inventors:

goldMedal Max P McDaniel (299 out of 542 patents)

silverMedal Qing R Yang (247 out of 258 patents)

bronzeMedal Kathy S Clear (102 out of 103 patents)

4.  Eric D Schwerdtfeger (75 out of 75 patents)

5.  Youlu Yu (73 out of 75 patents)

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