John K. Howell

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Tonawanda, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Cryogenic system for producing ultra-high purity nitrogen
- Patent number 5,983,667
- Issue date Nov 16, 1999
- Praxair Technology, Inc.
- Mary Louise Markowski
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Cryogenic rectification system with integral product boiler
- Patent number 5,901,578
- Issue date May 11, 1999
- Praxair Technology, Inc.
- Kenneth Kai Wong
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Air separation process with improved reboiler liquid cleaning circuit
- Patent number 4,957,524
- Issue date Sep 18, 1990
- Union Carbide Corporation
- Ravindra F. Pahade
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...