Donald D. DeFord

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Glenview, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus suitable for repeated, accurate chemical analyses
- Patent number 4,283,201
- Issue date Aug 11, 1981
- Phillips Petroleum Company
- Donald D. DeFord
- G01 - MEASURING TESTING
Information Patent Grant
Quantitative chromatographic analysis without calibration
- Patent number 4,181,006
- Issue date Jan 1, 1980
- Phillips Petroleum Company
- Donald D. DeFord
- G01 - MEASURING TESTING
Information Patent Grant
Pressure compensation method and apparatus for a chromatograph
- Patent number 4,141,237
- Issue date Feb 27, 1979
- Phillips Petroleum Company
- Donald D. DeFord
- G01 - MEASURING TESTING
Information Patent Grant
Chromatographic analysis
- Patent number 4,007,626
- Issue date Feb 15, 1977
- Phillips Petroleum Company
- Lewis B. Roof
- G01 - MEASURING TESTING
Information Patent Grant
Chromatographic analyzer signal resolution
- Patent number 3,978,415
- Issue date Aug 31, 1976
- Phillips Petroleum Company
- Donald D. DeFord
- G06 - COMPUTING CALCULATING COUNTING