Mark Edward Stewart

This inventor holds 23 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 7 EPO patents, primarily in Polymer Blends. Top assignees: Eastman Chemical Company, Grupo Petrotemex S.a. De C.v., Eastman-Kodak Company. Active years: 1993-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mark Edward Stewart. Retrieved from https://idiyas.com/inventor/mark-edward-stewart

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

Calculating rank

USPTO Granted Patents = 23 (Patent Applications = 2)

% Patents Active = 87.0

CIPO Patents = 1

EPO Patents = 7 (Patent Applications = 3)

Average Co-Inventor Count = 4.0

ph-index = 8

Forward Citations = 277(Granted Patents)

Company Filing History:

15 out of 2,040

Eastman Chemical Company

patents

5 out of 64

Grupo Petrotemex S.a. De C.v.

patents

3 out of 21,608

Eastman-Kodak Company

patents

Years Active: 1993-2015

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Areas of Expertise:

Polyester Blends

Oxygen-Scavenging

Transparent Compositions

Polyamide Nanocomposites

Polycarbonate Blends

Multilayered Articles

Flavor Retaining Property

Low Temperature Toughness

Polyether Polymers

High Impact Strength

PET Resins

Polyphenylene Ether Blends

23 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9062200 - Polyester blends exhibiting low temperature toughness (2015-06-23),

2. 8859681 - Polyester blends exhibiting low temperature toughness (2014-10-14),

3. 8304499 - Transparent polymer blends and articles prepared therefrom (2012-11-06),

4. 8133417 - Process for the preparation of transparent shaped articles (2012-03-13),

5. 8058360 - Polyester blends exhibiting low temperature toughness (2011-11-15),

6. 8057726 - Screw designs having improved performance with low melting PET resins (2011-11-15),

7. 7985456 - Oxygen-scavenging polymer blends suitable for use in packaging (2011-07-26),

8. 7964258 - Transparent, oxygen-scavenging compositions and articles prepared therefrom (2011-06-21),

9. 7959998 - Transparent, oxygen-scavenging compositions containing polyesters comprising a cyclobutanediol and articles prepared therefrom (2011-06-14),

10. 7959836 - Process for the preparation of transparent, shaped articles containing polyesters comprising a cyclobutanediol (2011-06-14),

11. 7955533 - Process for the preparation of transparent shaped articles (2011-06-07),

12. 7786252 - Preparation of transparent multilayered articles (2010-08-31),

13. 7641950 - Polyester/polyamide blend having improved flavor retaining property and clarity (2010-01-05),

14. 7521523 - Oxygen-scavenging polyester compositions useful in packaging (2009-04-21),

15. 7462684 - Preparation of transparent, multilayered articles containing polyesters comprising a cyclobutanediol and homogeneous polyamide blends (2008-12-09),

Title: Mark Edward Stewart: Innovator in Polyester Technology

Introduction: Mark Edward Stewart, based in Kingsport, TN, is a distinguished inventor known for his significant contributions to polymer technology. With a remarkable tally of 23 patents, Stewart has played a pivotal role in advancing materials suitable for various applications, particularly in the packaging sector.

Latest Patents: Among his latest innovations is a patent focused on polyester blends exhibiting low temperature toughness. This invention outlines polymer blends suitable for packaging that incorporate one or more impact modifiers alongside polyethylene terephthalate homopolymers or copolymers. These polymers are produced through a melt phase polymerization utilizing a catalyst system enriched with aluminum and alkaline earth metal atoms, significantly enhancing their performance at low temperatures compared to conventional polymers.

Career Highlights: Mark Stewart has garnered notable experience in leading companies in the chemical industry. His tenure includes significant roles at Eastman Chemical Company and Grupo Petrotemex S.A. de C.V., where he has utilized his expertise in polymer science to introduce innovative solutions that improve material properties.

Collaborations: Throughout his career, Stewart has collaborated with esteemed colleagues such as Martin Emerson Rogers and Marcus David Shelby. These partnerships have fostered a creative environment conducive to innovation and the development of groundbreaking technologies.

Conclusion: Mark Edward Stewart represents a quintessential figure in the field of polymer technology, with his extensive patent portfolio underscoring his dedication to innovation. His ongoing work continues to shape the future of materials science, making significant impacts in industries reliant on advanced polymer applications.

Profile summary based on public USPTO records.