DH

Douglas J. Hallett

NS Natural Energy Systems: 1 patents #3 of 5Top 60%
📍 Acton, CA: #9 of 42 inventorsTop 25%
Overall (All Time): #1,011,608 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8343241 Process for the conversion of organic material to methane rich fuel gas Craig Steven McEwen 2013-01-01
6773608 Ultraviolet treatment for aqueous liquids Ronald C. Hallett 2004-08-10
5704557 Method and apparatus for treatment of organic waste material Kelvin R. Campbell 1998-01-06
5050511 Process for the destruction of organic waste material Kelvin R. Campbell 1991-09-24
4819571 Process for the destruction of organic waste material 1989-04-11