Enter assignee name

Forward Citations = 315

Loading Chart...

3 inventors (with patents filed for the assignee):

Frank Massa (14 out of 43 patents)

Donald P Massa (3 out of 14 patents)

James G Hall (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 4763307 - Wide-range audio frequency underwater transducer (1988-08-09),

2. 4700333 - Hydrophone design to overcome reduction in leakage resistance between (1987-10-13),

3. 4469175 - Mechanoacoustic transducer for use in transmitting high acoustic power (1984-09-04),

4. 4450436 - Acoustic alarm repeater system (1984-05-22),

5. 4439847 - High efficiency broadband directional sonar transducer (1984-03-27),

6. 4433399 - Ultrasonic transducers (1984-02-21),

7. 4428206 - Means for detecting the accumulation of frost in a low temperature (1984-01-31),

8. 4348869 - Means for detecting the accumulation of frost in a low temperature (1982-09-14),

9. 4342229 - Apparatus and method for the non-destructive testing of the physical (1982-08-03),

10. 4332017 - Mechanoacoustic transducer for use in transmitting high acoustic power (1982-05-25),

11. 4305141 - Low-frequency directional sonar systems (1981-12-08),

12. 4305140 - Low frequency sonar systems (1981-12-08),

13. 4297538 - Resonant electroacoustic transducer with increased band width response (1981-10-27),

14. 4281484 - System for precisely and economically adjusting the resonance frequence (1981-08-04),

15. 4210969 - Sonic ranging systems to eliminate errors due to variations in the sound (1980-07-01),

The Stoneleigh Trust is a charitable organization dedicated to supporting organizations and initiatives that promote social justice, equity, and opportunity for marginalized communities. Through grantmaking and strategic partnerships, the trust works to create lasting impact and positive change in the areas of criminal justice reform, youth development, and economic empowerment. By investing in innovative solutions and advocating for systemic change, The Stoneleigh Trust strives to build a more just and equitable society for all.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

16 Patents

#2 in Cohasset, MA

#1,160 in Massachusetts

#19,269 in US

#36,651 in the World

Cohasset, MA, United States of America

The Stoneleigh Trust

Forward Citations = 315

3 inventors:

Frank Massa (14 out of 43 patents)

Donald P Massa (3 out of 14 patents)

James G Hall (1 out of 1 patent)

Please report any incorrect information to support@idiyas.com