Inventor · disambiguated record
Donald P. Massa
Also filed as: HALL JAMES G · MASSA DONALD P · MASSA DONALD PATRICK
14 granted patents·2 pending applications·336 citations·filing 1970–2024
93Inventor score
Files withDELLORFANO JR FRED M3STONELEIGH TRUST3FRED M DELLORFANO JR AND DONAL2GCP APPLIED TECH INC2MASSA DONALD PATRICK2
Top patents by PatentIndex Score
16 records- 0192US4450436AAcoustic alarm repeater systemSTONELEIGH TRUST·Filed 1982·Granted May 22, 1984·82 cites·25 claims
- 0288US4641290ALow frequency portable lightweight sonar systems and their method of deployment for greatly increasing the efficiency of submarine surveillance over large areasDELLORFANO JR FRED M·Filed 1984·Granted Feb 3, 1987·57 cites·19 claims
- 0385US8320218B2Hidden ultrasonic transducer with beam angle control for non-contact target detection systemsMASSA DONALD PATRICK·Filed 2010·Granted Nov 27, 2012·9 cites·14 claims
- 0485US4107659AIntrusion alarm system with improved air turbulence compensationDELLORFANO JR FRED M·Filed 1976·Granted Aug 15, 1978·41 cites·18 claims
- 0578US12049023B2Instrument for direct measurement of air content in a liquid using a resonant electroacoustic transducerGCP APPLIED TECH INC·Filed 2020·Granted Jul 30, 2024·1 cites·14 claims
- 0677US8085621B2Ultrasonic transducer with improved method of beam angle controlMASSA DONALD PATRICK·Filed 2009·Granted Dec 27, 2011·10 cites·18 claims
- 0776US2024326289A1Instrument for Direct Measurement of Air Content in a Liquid Using a Resonant Electroacoustic TransducerGCP APPLIED TECH INC·Filed 2024·Application pending·0 cites
- 0874US4189719AIntrusion alarm systemsSTONELEIGH TRUST·Filed 1977·Granted Feb 19, 1980·25 cites·8 claims
- 0967US4868799AMeans for equalizing the internal pressure in an underwater transducer employing a vibratile piston to permit operation of the transducer at water depths in excess of a few hundred feetMASSA FRANK·Filed 1988·Granted Sep 19, 1989·45 cites·20 claims
- 1061US3949349ADual electroacoustic transducersDELLORFANO JR FRED M·Filed 1974·Granted Apr 6, 1976·15 cites·6 claims
- 1158US5729507ADirectional energy receiving systems for use in the indication of the direction of arrival of the received signalMASSA PRODUCTS CORP·Filed 1985·Granted Mar 17, 1998·23 cites·6 claims
- 1256US2024369693A1Position detection in hostile environment using reflected radiated energyMASSA PRODUCTS CORP·Filed 2024·Application pending·0 cites
- 1351US3967260AIntrusion alarm system with improved air turbulence compensationFRED M DELLORFANO JR AND DONAL·Filed 1974·Granted Jun 29, 1976·8 cites·10 claims
- 1443US4700333AHydrophone design to overcome reduction in leakage resistance between electrode surface of transducer element assembly and the water in which the hydrophone is immersedSTONELEIGH TRUST·Filed 1985·Granted Oct 13, 1987·8 cites·10 claims
- 1541US4769795AMethod of making an underwater electroacoustic transducer with long-lasting high leakage resistanceMASSA F·Filed 1987·Granted Sep 6, 1988·9 cites·4 claims
- 1636US3932833AInstrument for direct measurement of the velocity of sound in a fluidFRED M DELLORFANO JR AND DONAL·Filed 1970·Granted Jan 13, 1976·3 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Donald P. Massa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →