Bartlesville, OK, United States of America

Guylaine St Jean

This inventor holds 26 USPTO granted patents and 4 published patent applications, plus 13 CIPO patents and 13 EPO patents, primarily in Polymer Compositions. Top assignees: Chevron Phillips Chemical Company LP, Union Carbide Chemicals & Plastics Technology Corporation, Chevron Philips Chemical Company, LP. Active years: 1996-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Guylaine St Jean. Retrieved from https://idiyas.com/inventor/guylaine-st-jean

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

USPTO Granted Patents = 26 (Patent Applications = 4)

% Patents Active = 100.0

CIPO Patents = 13

EPO Patents = 13 (Patent Applications = 14)

Average Co-Inventor Count = 4.7

ph-index = 10

Forward Citations = 359(Granted Patents)

Location History:

Somerset, NJ (US) (1996 - 2006)
Bartlesville, OK (US) (2013 - 2021)
North Olmsted, OH (US) (2016 - 2021)

Company Filing History:

22 out of 1,181

Chevron Phillips Chemical Company LP

patents

3 out of 822

Union Carbide Chemicals & Plastics Technology Corporation

patents

1 out of 27

Chevron Philips Chemical Company, LP

patents

Years Active: 1996-2021

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Areas of Expertise:

Medium Density Polyethylene

Low Density Polyolefin

High Clarity Compositions

Stress Crack Resistance

Bimodal Resins

Barrier Properties

Catalyst Compositions

Blow Molding Resins

Film Processability

Rotational Molding

26 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11066499 - Medium density polyethylene compositions (2021-07-20),

2. 10899855 - Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom (2021-01-26),

3. 10858464 - Medium density polyethylene compositions (2020-12-08),

4. 10113016 - Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom (2018-10-30),

5. 9845368 - High clarity low haze compositions (2017-12-19),

6. 9840570 - Medium density polyethylene compositions (2017-12-12),

7. 9605100 - Higher density polyolefins with improved stress crack resistance (2017-03-28),

8. 9605097 - Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom (2017-03-28),

9. 9394393 - Higher density polyolefins with improved stress crack resistance (2016-07-19),

10. 9334350 - Low density polyolefin resins and films made therefrom (2016-05-10),

11. 9309338 - High clarity low haze compositions (2016-04-12),

12. 9284391 - Polymer compositions having improved barrier properties (2016-03-15),

13. 9284389 - Bimodal resins having good film processability (2016-03-15),

14. 9181370 - Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom (2015-11-10),

15. 9156970 - Higher density polyolefins with improved stress crack resistance (2015-10-13),

Title: Guylaine St Jean: Innovator in Polyolefin Technologies

Introduction

Guylaine St Jean, based in Bartlesville, OK, is an accomplished inventor with an impressive portfolio of 23 patents. His work primarily focuses on innovations in polymer chemistry, particularly polyolefins, which are crucial in various industrial applications.

Latest Patents

Among St Jean's latest patents is a novel formulation for medium density polyethylene compositions. This invention features an ethylene alpha-olefin copolymer characterized by a density ranging from 0.910 g/cc to 0.940 g/cc, a weight average molecular weight spanning from about 150,000 g/mol to about 300,000 g/mol, and precise melt index parameters. The resultant polymer composition yields a 1 mil blown film exhibiting exceptional Dart Impact strength exceeding 175 g/mil and robust tear strengths in both machine and transverse directions.

Another significant innovation from St Jean is the development of low-density polyolefin resins utilizing dual metallocene catalyst systems. These polymers demonstrate not only low densities and high molecular weights but also an advantageous broad molecular weight distribution. The unique design of the polymers, where the long chain branches predominantly reside in the lower molecular weight component, greatly enhances the impact and puncture resistance of films produced from them.

Career Highlights

St Jean has had a noteworthy career, contributing significantly to the field of polymer science while working with respected organizations such as Chevron Phillips Chemical Company LP and Chevron Phillips Chemical Company, LP. His expertise and innovations have positioned him as a valuable asset in the chemical engineering sector.

Collaborations

Throughout his career, Guylaine has collaborated with esteemed colleagues, including Qing R. Yang and Ashish M. Sukhadia. These partnerships have not only enriched his professional journey but also contributed to advancements in polymer technologies.

Conclusion

Guylaine St Jean exemplifies innovation in polyolefin development through his extensive patent portfolio and professional collaborations. His contributions are instrumental in advancing polymer science and its applications within the industry.

Profile summary based on public USPTO records.