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Calvert Environmental, Inc.
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San Diego, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Odor control method
Patent number
5,417,920
Issue date
May 23, 1995
Calvert Environmental, Inc.
Shui-Chow Yung
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Pollution control system and method of using same
Patent number
5,391,220
Issue date
Feb 21, 1995
Calvert Environmental, Inc.
Ronald G. Patterson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Odor control system
Patent number
5,308,589
Issue date
May 3, 1994
Calvert Environmental, Inc.
Shui-Chow Yung
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Pollution control system and method of using same
Patent number
5,154,734
Issue date
Oct 13, 1992
Calvert Environmental, Inc.
Shui-Chow Yung
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Wet scrubber particle discharge system and method of using the same
Patent number
5,147,421
Issue date
Sep 15, 1992
Calvert Environmental, Inc.
Shui-Chow Yung
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
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