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For the Inventor, By the Inventor

Houston, TX, United States of America

Charles J Harlan

This inventor holds 24 USPTO granted patents and 15 published patent applications and 11 EPO patents, primarily in Olefin Polymerization. Top assignees: Exxonmobil Chemical Patents Inc., Exxonmobil Research and Engineering Company. Active years: 2018-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Charles J Harlan. Retrieved from https://idiyas.com/inventor/charles-j-harlan

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 24 

% Patents Active = 83.3

 

Average Co-Inventor Count = 5.1

ph-index = 5

Forward Citations = 44(Granted Patents)


Company Filing History:

goldMedal21 out of 3,341 
 
Exxonmobil Chemical Patents Inc.
 patents
silverMedal3 out of 1,780 
 
Exxonmobil Research and Engineering Company
 patents

Years Active: 2018-2026

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Areas of Expertise:
Metallocenes
Catalysts
Polymerization
Transition Metal
Silica Supported
Olefin
Carbon Dioxide
Polyethylene
Complexes
Aliphatic Solvents
Hafnocenes
Phenolate
24 patents (USPTO):Explore Patents
1. 12649801 - In-situ MAO derived silica supported single-site metallocene catalysts (2026-06-09),
2. 12338257 - Metallocenes and methods thereof (2025-06-24),
3. 12091476 - On-line adjustment of catalysts by trim and olefin polymerization (2024-09-17),
4. 12043679 - On-line adjustment of mixed catalyst ratio by trim and olefin polymerization with the same (2024-07-23),
5. 11739169 - Solubility improvement of non-metallocene transition metal complexes in aliphatic hydrocarbon solvents (2023-08-29),
6. 11591417 - Deactivation methods for active components from gas phase polyolefin polymerization processes (2023-02-28),
7. 11279723 - Metallocene synthesis process (2022-03-22),
8. 11225539 - Supported transition metal bis(phenolate) complexes and their use as catalysts for olefin polymerization (2022-01-18),
9. 11186601 - Metallocene compounds having appended Lewis acids and polymerization therewith (2021-11-30),
10. 11161922 - Toluene free silica supported single-site metallocene catalysts from in-situ supported MAO formation in aliphatic solvents (2021-11-02),
11. 11142591 - Polymerization process (2021-10-12),
12. 11117983 - Carbon dioxide as a catalyst quench agent in solution polymerization, and products made therefrom (2021-09-14),
13. 11021552 - Toluene free silica supported single-site metallocene catalysts from in-situ supported alumoxane formation in aliphatic solvents (2021-06-01),
14. 11015001 - Catalyst systems and polymerization processes for using the same (2021-05-25),
15. 10927203 - Polyethylene compositions and articles made therefrom (2021-02-23),

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Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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