Donald L Fields, Jr

This inventor holds 16 USPTO granted patents and 7 published patent applications and 3 EPO patents. Top assignees: Eastman Chemical Company, Flexsys America L.p.. Active years: 1999-2025.

USPTO Granted Patents = 16 (Patent Applications = 7)

% Patents Active = 100.0

EPO Patents = 3 (Patent Applications = 10)

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 15(Granted Patents)

Company Filing History:

8 out of 2,038

Eastman Chemical Company

Years Active: 1999-2025

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12410144 - Triazinane derivatives and methods of making them (2025-09-09),

2. 10611719 - Methods of making compounds and mixtures having antidegradant and antifatigue efficacy (2020-04-07),

3. 10428009 - Methods of making compounds and mixtures having antidegradant and antifatigue efficacy (2019-10-01),

4. 10407562 - Compounds with antidegradant and antifatigue efficacy and compositions including said compounds (2019-09-10),

5. 10287418 - Compounds with antidegradant and antifatigue efficacy and compositions including said compounds (2019-05-14),

6. 10260017 - Compounds and mixtures with antidegradant and antifatigue efficacy and compositions including said compounds (2019-04-16),

7. 10167252 - Compounds and mixtures with antidegradant and antifatigue efficacy and compositions including such compounds (2019-01-01),

8. 10160845 - Methods of making compounds and mixtures having antidegradant and antifatigue efficacy (2018-12-25),

9. 10160718 - Methods of making compounds having antidegradant and antifatigue efficacy (2018-12-25),

10. 6187937 - Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylamines (2001-02-13),

11. 6184385 - Process for the manufacture of a sulfenimide (2001-02-06),

12. 6114554 - Preparation of quinonediimines from phenylenediamines using a (2000-09-05),

13. 6072061 - Preparation of quinoneimines from hydroxyphenylamines using a (2000-06-06),

14. 6043384 - Preparation of quinoneimines from hydroxyphenylamines using hydrogen (2000-03-28),

15. 6025508 - Preparation of quinonediimines from phenylenediamines using oxygen and a (2000-02-15),

Title: The Innovative Contributions of Donald L Fields, Jr.

Introduction

Donald L Fields, Jr. is a notable inventor based in Copley, Ohio, with a remarkable portfolio of 16 patents. His work primarily focuses on chemical compounds and methods that have significant applications in various industries. Fields has made substantial contributions to the field of chemistry, particularly in the development of innovative compounds.

Latest Patents

Among his latest patents, Fields has developed triazinane derivatives and methods of making them. This invention is directed to compounds represented by a specific formula, where R comprises a hydrogen atom or an alkyl group having 1 to 2 carbon atoms. Additionally, he has created methods for making compounds and mixtures that exhibit antidegradant and antifatigue efficacy. These methods involve the reaction of p-phenylenediamine with a dicarbonyl to obtain a diimine, which is then reduced to yield mixtures containing the antidegradant compound.

Career Highlights

Fields has had a distinguished career, working with prominent companies such as Flexsys America L.P. and Eastman Chemical Company. His experience in these organizations has allowed him to apply his innovative ideas and contribute to advancements in chemical engineering and product development.

Collaborations

Throughout his career, Fields has collaborated with talented individuals, including Matthew Allen Boone and Frederick Ignatz-Hoover. These collaborations have fostered a creative environment that has led to the successful development of various patented technologies.

Conclusion

Donald L Fields, Jr. is a significant figure in the realm of innovation, with a strong focus on chemical compounds and their applications. His contributions through patents and collaborations highlight his dedication to advancing technology in his field.