For the Inventor, By the Inventor

Enter assignee name

Nashua, NH, United States of America

Ferrofluidics Corporation

USPTO Granted Patents = 85

Trademarks = 2

Forward Citations = 1,671

Loading Chart...

Loading Chart...

53 inventors (with patents filed for the assignee):

Kuldip Raj (50 out of 53 patents)

Ronald Moskowitz (20 out of 20 patents)

Hanumaiah L Gowda (10 out of 10 patents)

4. Thomas J Black, Jr (7 out of 8 patents)

5. Philip Stahl (6 out of 6 patents)

6. Zhixin Li (5 out of 17 patents)

7. Frank Bloom (5 out of 5 patents)

8. Raoul Casciari (5 out of 5 patents)

9. Lucian Borduz (5 out of 5 patents)

10. William B Mraz (4 out of 10 patents)

11. Christian Ionescu (3 out of 3 patents)

12. Lutful M Aziz (3 out of 3 patents)

13. James Bonvouloir (3 out of 3 patents)

14. Walter R Reed (3 out of 3 patents)

15. Alvan F Chorney (3 out of 3 patents)

Core Competencies:

Ferrofluid Seal

Electrically Conductive Ferrofluid

Magnetic Fluid Seal

Ferrofluid Pressure Sensor

Crystal Growth System

Nonbursting Seals

Low Viscosity Ferrofluid

Ferrofluid Sculpting

Solenoid Valve

Bearing Assembly

High-Pressure Seal

Liquid Magnetic Seal

85 patents: Sort by Forward Citations

1. 6290894 - Ferrofluid sculpting apparatus (2001-09-18),

2. 6254781 - Method for recycling ferrofluid constituents used in a materials separation process (2001-07-03),

3. 6242994 - Apparatus to reduce push back time in solenoid valves (2001-06-05),

4. 6103107 - System for recycling ferrofluid constituents used in a materials (2000-08-15),

5. 6068785 - Method for manufacturing oil-based ferrofluid (2000-05-30),

6. 5969589 - Quiet ferrofluid solenoid (1999-10-19),

7. 5958282 - Low cost method for manufacturing ferrofluid (1999-09-28),

8. 5955934 - Quiet ferrofluid solenoid with cushion (1999-09-21),

9. 5908987 - Sensor employing a sliding ferrofluid mass in a coated, non-wetting, (1999-06-01),

10. 5879452 - Czochralski crystal growth system with an independently supported pull (1999-03-09),

11. 5851416 - Stable polysiloxane ferrofluid compositions and method of making same (1998-12-22),

12. 5824149 - Method and apparatus for controlling crystal temperature gradients in (1998-10-20),

13. 5806856 - On-site fillable liquid magnetic seal (1998-09-15),

14. 5797990 - Apparatus for damping a crystal ingot suspension in a Czochralski (1998-08-25),

15. 5780741 - Sensor employing a sliding magnet suspended on ferrofluid (1998-07-14),

Company Overview

Ferrofluidics Corporation, based in Nashua, NH, specializes in advanced ferrofluid sealing technology. The company develops innovative solutions that leverage the unique properties of ferrofluids, including electrically conductive ferrofluids and magnetic fluid seals. Their expertise extends to applications such as ferrofluid pressure sensors and nonbursting seals, catering to diverse industries. With a focus on enhancing performance and reliability, Ferrofluidics is at the forefront of research in low viscosity ferrofluids and ferrofluid sculpting, contributing to cutting-edge technological advancements.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

85 Patents

#4 in Nashua, NH

#30 in New Hampshire

#4,378 in US

#8,962 in the World

Nashua, NH, United States of America

Ferrofluidics Corporation

Forward Citations = 1,671

53 inventors:

Kuldip Raj (50 out of 53 patents)

Ronald Moskowitz (20 out of 20 patents)

Hanumaiah L Gowda (10 out of 10 patents)

4. Thomas J Black, Jr (7 out of 8 patents)

5. Philip Stahl (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ferrofluidics Corporation. Retrieved from https://idiyas.com/company/ferrofluidics

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]

Loading…