Wilmington, DE, United States of America

Donald J Dumas

This inventor holds 26 USPTO granted patents and 3 EPO patents, primarily in Pesticide Chemistry. Top assignees: E.i. Dupont De Nemours and Company, Corteva Agriscience LLC, Fmc Corporation. Active years: 1984-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald J Dumas. Retrieved from https://idiyas.com/inventor/donald-j-dumas

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

USPTO Granted Patents = 26

% Patents Active = 96.2

EPO Patents = 3 (Patent Applications = 4)

Average Co-Inventor Count = 1.5

ph-index = 4

Forward Citations = 58(Granted Patents)

Company Filing History:

23 out of 16,339

E.i. Dupont De Nemours and Company

patents

1 out of 116

Corteva Agriscience LLC

4. 1 out of 834,453

Other

patents

Years Active: 1984-2025

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Areas of Expertise:

Mesoionic Pesticides

Nitrobenzoic Acid

Cyanobenzoic Acid

Indenooxadiazine

Sulfentrazone

Indanones

Phenyl Esters

Benzene Sulfonate

Herbicidal Compounds

Sulfonamide Derivatives

Sulfonamide N-Oxides

26 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12356988 - Process and intermediates for the preparation of certain mesoionic pesticides (2025-07-15),

2. 10155718 - Process to prepare 3-methyl-2-nitrobenzoic acid by air oxidation (2018-12-18),

3. 9828328 - Process to prepare 3-methyl-2-nitrobenzoic acid by air oxidation (2017-11-28),

4. 8247570 - Process for preparing 2-amino-5-cyanobenzoic acid derivatives (2012-08-21),

5. 8242279 - Process for preparing 2-amino-5-cyanobenzoic acid derivatives (2012-08-14),

6. 8049029 - Process for preparing 2-amino-5-cyanobenzoic acid derivatives (2011-11-01),

7. H0001950 - Processes for preparing indeno[1,2-E][1,3,4]oxadiazine-dicarboxylates (2001-03-06),

8. 5990315 - Process for the preparation of sulfentrazone (1999-11-23),

9. 5811585 - Process for preparing 5-chloro-2,3-dihydro-1H-inden-1-one (1998-09-22),

10. H001705 - Process for preparing 2-carboalkoxy-1-indanones (1998-01-05),

11. 5235077 - Process for preparing phenyl esters of substituted acids (1993-08-10),

12. 5153341 - Process for preparing benzenesulfonate salts (1992-10-06),

13. 5069828 - Process for preparing benzenesulfonate salts (1991-12-03),

14. 4985180 - Process for preparing phenyl esters of substituted acids (1991-01-15),

15. 4956005 - Herbicidal orthosulfonamide benzene sulfonylureas (1990-09-11),

Title: Donald J Dumas: Innovator in Chemical Processes

Introduction

Donald J Dumas is a prominent inventor based in Wilmington, Delaware, known for his significant contributions to the field of chemical processes. With an impressive portfolio of 25 patents, he has established himself as a key figure in chemical innovation, particularly in the synthesis of specialized compounds.

Latest Patents

Among his latest innovations is a patented process to prepare 3-methyl-2-nitrobenzoic acid through air oxidation. This method involves the combination of 1,3-dimethyl-2-nitrobenzene with an oxidation catalyst, utilizing an oxygen source and an initiator, ensuring that less than 99% of the 1,3-dimethyl-2-nitrobenzene is oxidized. Additionally, he has developed a method for preparing compounds characterized by using 3-methyl-2-nitrobenzoic acid, with structures defined by R as C-Calkyl, C-Ccycloalkyl, or C-Calkylcycloalkyl.

Career Highlights

Throughout his career, Donald J Dumas has worked with notable organizations, most prominently E.I. Dupont De Nemours and Company. His innovative work at these institutions has led to advancements that bridge the gap between chemical research and industrial applications.

Collaborations

Donald has collaborated with esteemed colleagues, including George C Sonnichsen and Vinayakam Subramanyam. These partnerships have fostered innovation and have been instrumental in the development of new chemical methods and processes.

Conclusion

Donald J Dumas continues to be a leading figure in the chemical industry, contributing to advancements in chemical synthesis and innovation. His extensive patent portfolio and collaborative efforts underscore his commitment to pushing the boundaries of chemical engineering.

Profile summary based on public USPTO records.