Forward Citations = 320

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3 inventors (with patents filed for the assignee):

Frank Massa (14 out of 43 patents)

Donald P Massa (3 out of 15 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),

Company Overview

The Stoneleigh Trust is a philanthropic organization based in Cohasset, MA, dedicated to advancing social justice and community development. It focuses on supporting initiatives that foster equity and inclusion, particularly in underserved communities. The Trust engages in various programs and partnerships aimed at enhancing educational opportunities, promoting health and wellness, and empowering individuals through innovative solutions. Its commitment to social impact drives its efforts in research and collaboration across multiple sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

16 Patents

#2 in Cohasset, MA

#1,203 in Massachusetts

#19,935 in US

#37,868 in the World

Cohasset, MA, United States of America

The Stoneleigh Trust

Forward Citations = 320

3 inventors:

Frank Massa (14 out of 43 patents)

Donald P Massa (3 out of 15 patents)

James G Hall (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Stoneleigh Trust. Retrieved from https://idiyas.com/company/stoneleigh-trust

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]