Stephen C. Hadden

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Cambridge, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Engine fault diagnosis
- Patent number 4,189,940
- Issue date Feb 26, 1980
- RCA Corporation
- Leonard R. Hulls
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Identification of engine cylinder having fault
- Patent number 4,133,205
- Issue date Jan 9, 1979
- RCA Corporation
- Leonard R. Hulls
- G01 - MEASURING TESTING
Information Patent Grant
Filter which tracks changing frequency of input signal
- Patent number 4,032,852
- Issue date Jun 28, 1977
- RCA Corporation
- Leonard Robin Hulls
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tachometer without physical connection to internal combustion engine
- Patent number 3,978,719
- Issue date Sep 7, 1976
- RCA Corporation
- Stephen Clow Hadden
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Engine diagnosis from frequency components in exhaust
- Patent number 3,977,239
- Issue date Aug 31, 1976
- RCA Corporation
- Leonard Robin Hulls
- G01 - MEASURING TESTING
Information Patent Grant
Sampling and dilution method
- Patent number 3,965,749
- Issue date Jun 29, 1976
- The United States of America as represented by the Secretary of the Army
- Stephen C. Hadden
- G01 - MEASURING TESTING