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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 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 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 based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

16 Patents

#2 in Cohasset, MA

#1,202 in Massachusetts

#19,898 in US

#37,766 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 14 patents)

James G Hall (1 out of 1 patent)

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