Frederik M. H. J. Duysings

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Orifice blockage detection system
- Patent number 4,850,001
- Issue date Jul 18, 1989
- Shell Oil Company
- Frederik M. H. J. Duysings
- G01 - MEASURING TESTING
Information Patent Grant
Mill/dryer gas temperature control
- Patent number 4,750,434
- Issue date Jun 14, 1988
- Shell Oil Company
- James A. Salter
- G05 - CONTROLLING REGULATING