Andrew A. Chen

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of presulfurizing a hydrotreating, hydrocracking or tail gas...
- Patent number 5,688,736
- Issue date Nov 18, 1997
- CRI International, Inc.
- James Dallas Seamans
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process of hydrotreating and/or hydrocracking hydrocarbon streams o...
- Patent number 5,468,372
- Issue date Nov 21, 1995
- Shell Oil Company
- James D. Seamans
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Presulfurized hydrotreating, hydrocracking or tail gas treating cat...
- Patent number 5,292,702
- Issue date Mar 8, 1994
- CRI International, Inc.
- James D. Seamans
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of presulfurizing a hydrotreating, hydrocracking or tail gas...
- Patent number 5,215,954
- Issue date Jun 1, 1993
- CRI International, Inc.
- James D. Seamans
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL