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Ruth G. Heffes
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Glen Burnie, MD, US
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last 30 patents
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Patent Application
Attrition resistant hardened zeolite materials for air filtration m...
Publication number
20120118160
Publication date
May 17, 2012
Ruth G. Heffes
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Application
Air filtration media comprising metal-doped silicon-based gel mater...
Publication number
20120121471
Publication date
May 17, 2012
Terry W. Nassivera
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Application
Filtration Media for the Removal of Basic Molecular Contaminants fo...
Publication number
20090211453
Publication date
Aug 27, 2009
Terry W. Nassivera
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL