Forward Citations = 37

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1 inventor (with patents filed for the assignee):

James E Stangroom (5 out of 15 patents)

5 patents: Sort by Forward Citations

1. 6272852 - High speed actuators and vibrators based on electro-rheological fluids (2001-08-14),

2. 5409354 - Variable displacement pump (1995-04-25),

3. 5356269 - Variable displacement pump (1994-10-18),

4. 4812251 - Electro-rheological fluids/electric field responsive fluids (1989-03-14),

5. 4664236 - Electrically controlled, progressive, frictional, torque transmitting (1987-05-12),

Company Overview

ER Fluid Developments Limited is a leading company specializing in the development and production of innovative electromagnetic rheological (ER) fluids. With a team of highly skilled engineers and scientists, we have established ourselves as a trusted provider of advanced solutions for various industries, including automotive, aerospace, and robotics. Our cutting-edge technologies and exceptional product quality set us apart in the market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#270 in

#3,213 in United Kingdom

GB

Er Fluid Developments Limited

Forward Citations = 37

1 inventor:

James E Stangroom (5 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Er Fluid Developments Limited. Retrieved from https://idiyas.com/company/er-fluid-developments

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

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]