Inventor
DOUGHTY DAVID T
US10 patents
⚠️ This page may combine multiple inventors who share the name “DOUGHTY DAVID T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CALGON CARBON CORP
9 patentsUS5733515AMar 31, 1998
Purification of air in enclosed spaces
CALGON CARBON CORP114 citations96
US5492882AFeb 20, 1996
Chromium-free impregnated activated universal respirator carbon for adsorption of toxic gases and/or vapors in industrial applications
CALGON CARBON CORP121 citations94
US5912423AJun 15, 1999
Method and means for purifying air with a regenerable carbon cloth sorbent
CALGON CARBON CORP71 citations93
US5063196ANov 5, 1991
Chromium-free impregnated activated carbon for adsorption of toxic gases and/or vapors
CALGON CARBON CORP89 citations92
US5700436ADec 23, 1997
Purification of air in enclosed spaces
CALGON CARBON CORP10 citations72
US11697090B2Jul 11, 2023
Sorbent devices
CALGON CARBON CORP4 citations69
US11648528B2May 16, 2023
Carbon sorbents for the removal of nitrogen oxides and methods for making the same
CALGON CARBON CORP0 citations55
US10279333B2May 7, 2019
Carbon sorbents for the removal of nitrogen oxides and methods for making the same
CALGON CARBON CORP1 citations55
US6422059B1Jul 23, 2002
Apparatus for detecting changes in concentrations of components of fluid mixtures
CALGON CARBON CORP3 citations51