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For the Inventor, By the Inventor

Manchester, MO, United States of America

Donald L Fields, Jr

This inventor holds 14 USPTO granted patents, primarily in Phosphonate Chemistry. Top assignee: Monsanto Company. Active years: 1989-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald L Fields, Jr. Retrieved from https://idiyas.com/inventor/donald-l-fields-jr-gw8997tz

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

Calculating rank
USPTO Granted Patents = 14

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 5

Forward Citations = 99(Granted Patents)


Location History:

  • St. Louis, MO (US) (1989)
  • Manchester, MO (US) (1989 - 1992)

Company Filing History:

goldMedal14 out of 3,289 
 
Monsanto Company
 patents

Years Active: 1989-1992

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Areas of Expertise:
N-Phosphonomethylglycine
Oxidation Process
Amine Salts
Glyphosate Production
Peroxide Process
N-Acyl-Aminomethylphosphonates
2-Oxazolidone
Phosphonate Synthesis
Chemical Processes
Phosphonates
Dealkylation
Chemical Preparation
14 patents (USPTO):Explore Patents
1. 5095140 - Peroxide process for producing N-phosphonomethylglycine (1992-03-10),
2. 5077430 - Peroxide process for producing N-phosphonomethylglycine (1991-12-31),
3. 5072033 - Process for producing N-phosphonomethylglycine (1991-12-10),
4. 5061820 - Process for producing N-phosphonomethylgylcine (1991-10-29),
5. 5047579 - Process for producing n-phosphonomethylglycine (1991-09-10),
6. 5043475 - Peroxide process for producing N-phosphonomethylglycine (1991-08-27),
7. 5041627 - Preparation of N-acyl-aminomethylphosphonates (1991-08-20),
8. 5023369 - Process for producing N-phosphonomethylglycine (1991-06-11),
9. 4965403 - Oxidation/dealkylation process (1990-10-23),
10. 4952723 - Process for producing N-phosphonomethylglycine (1990-08-28),
11. 4937376 - Process for producing N-phosphonomethylglycine (1990-06-26),
12. 4898972 - Process for producing N-phosphonomethylglycine (1990-02-06),
13. 4889906 - Amine salts of 1,4,2-oxazaphospholidine-4-acetic acid, 2-alkoxy-2-oxides (1989-12-26),
14. 4810426 - Process for making glyphosate from n-phosphonomethyl-2-oxazolidone (1989-03-07),

Title: The Innovations of Donald L Fields, Jr.

Introduction

Donald L Fields, Jr. is a notable inventor based in Manchester, MO (US). He has made significant contributions to the field of chemistry, particularly in the development of processes related to agricultural chemicals. With a total of 14 patents to his name, Fields has established himself as a key figure in innovation.

Latest Patents

One of his latest patents is the "Peroxide process for producing N-phosphonomethylglycine." This process involves the oxidation of N-phosphonomethyliminodiacetic acid with a peroxide to create an intermediate N-phosphonomethyliminodiacetic acid-N-oxide. Subsequently, this intermediate is converted to N-phosphonomethylglycine by adding a catalytic amount of metals such as iron, zinc, aluminum, vanadium, and copper, or by using water-soluble vanadium compounds, ferrous salts, and cuprous salts.

Career Highlights

Fields has had a distinguished career, primarily working with Monsanto Company, where he has been instrumental in advancing agricultural chemical processes. His work has not only contributed to the company's success but has also had a lasting impact on the industry.

Collaborations

Throughout his career, Fields has collaborated with several notable colleagues, including Raymond C Grabiak and Dennis Patrick Riley. These collaborations have further enhanced his innovative capabilities and have led to the development of groundbreaking technologies.

Conclusion

Donald L Fields, Jr. is a prominent inventor whose work in the field of agricultural chemistry has led to significant advancements. His innovative processes and collaborations continue to influence the industry today.

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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