Michael S Howarth

This inventor holds 7 USPTO granted patents. Top assignees: Imperial Chemical Industries Limited, Zeneca Limited. Active years: 1980-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Michael S Howarth. Retrieved from https://idiyas.com/inventor/michael-s-howarth

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

Calculating rank

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 4

Forward Citations = 35(Granted Patents)

Location History:

Manchester, GB (1980)
Oldham, GB (1981)
Lancashire, GB (1988 - 1993)
Littleborough, GB (1989 - 1998)

Company Filing History:

6 out of 3,840

Imperial Chemical Industries Limited

Years Active: 1980-1998

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5792887 - Decarboxylation process (1998-08-11),

2. 5189163 - Method of preparing pyridazinone derivatives (1993-02-23),

3. 4812572 - Process for preparation of fluoroaromatic or fluoroheterocyclic compounds (1989-03-14),

4. 4745193 - Process for the preparation of fluoromethylpyridines (1988-05-17),

5. 4276418 - Process for the purification of esters of phosphorus thioacids (1981-06-30),

6. 4233232 - Manufacture of esters (1980-11-11),

7. 4225503 - Manufacture of esters (1980-09-30),

Title: Michael S Howarth: Innovator in Pyridazinone Derivatives

Introduction

Michael S Howarth is a notable inventor based in Lancashire, GB. He has made significant contributions to the field of chemistry, particularly in the development of pyridazinone derivatives. With a total of 7 patents to his name, Howarth's work has had a considerable impact on various applications in the industry.

Latest Patents

One of his latest patents is a decarboxylation process, which outlines a method for preparing pyridazinone derivatives. This innovative method involves reacting a hydrazone of glyoxylic acid halide with an ester in the presence of an alkaline earth base. The general formula for the pyridazinone derivative includes various substituents, showcasing the versatility of his approach.

Career Highlights

Throughout his career, Michael S Howarth has worked with prominent companies such as Imperial Chemical Industries Limited and Zeneca Limited. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking research in the field of chemistry.

Collaborations

Howarth has collaborated with esteemed colleagues, including Edward George Scovell and David John Watson. These partnerships have further enriched his work and expanded the scope of his inventions.

Conclusion

Michael S Howarth is a distinguished inventor whose contributions to the field of pyridazinone derivatives have been invaluable. His innovative methods and collaborations with industry leaders highlight his commitment to advancing chemical research.

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]