Inventor
JOHNSON HARLAN B
US24 patents
Patents
24 patentsUS5326391AJul 5, 1994
Microporous material exhibiting increased whiteness retention
PPG INDUSTRIES INC116 citations95
US4681750AJul 21, 1987
Preparation of amorphous, precipitated silica and siliceous filler-reinforced microporous polymeric separator
PPG INDUSTRIES INC133 citations95
US5009971AApr 23, 1991
Gas recombinant separator
PPG INDUSTRIES INC55 citations92
US5035886AJul 30, 1991
Active agent delivery device
PPG INDUSTRIES INC41 citations91
US4849297AJul 18, 1989
Article having a corrosion inhibiting coating
PPG INDUSTRIES INC27 citations91
US4837253AJun 6, 1989
Corrosion inhibiting pigment
PPG INDUSTRIES INC33 citations91
US4105516AAug 8, 1978
Method of electrolysis
PPG INDUSTRIES INC35 citations91
US5071645ADec 10, 1991
Process of producing an active agent delivery device
PPG INDUSTRIES INC38 citations90
US4959208ASep 25, 1990
Active agent delivery device
PPG INDUSTRIES INC47 citations90
US5009806AApr 23, 1991
Calcium hypochlorite article
PPG INDUSTRIES INC27 citations89
US4865760ASep 12, 1989
Calcium hypochlorite composition
PPG INDUSTRIES INC33 citations88
US4101394AJul 18, 1978
Electrolytic method
PPG INDUSTRIES INC25 citations82
US4007107AFeb 8, 1977
Electrolytic anode
PPG INDUSTRIES INC22 citations82
US3990957ANov 9, 1976
Method of electrolysis
PPG INDUSTRIES INC30 citations81
US4970020ANov 13, 1990
Calcium hypochlorite composition
PPG INDUSTRIES INC20 citations79
US4329209AMay 11, 1982
Process using an oxidant depolarized solid polymer electrolyte chlor-alkali cell
PPG INDUSTRIES INC7 citations74
US4055477AOct 25, 1977
Electrolyzing brine using an anode coated with an intermetallic compound
PPG INDUSTRIES INC12 citations74
US4313813AFeb 2, 1982
Fixed bed oxygen depolarized cathode chlor-alkali cell
PPG INDUSTRIES INC7 citations73
US4244793AJan 13, 1981
Brine electrolysis using fixed bed oxygen depolarized cathode chlor-alkali cell
PPG INDUSTRIES INC12 citations73
US4101624AJul 18, 1978
Method of casting silicon
PPG INDUSTRIES INC16 citations73
US4040918AAug 9, 1977
Method of activating an anode
PPG INDUSTRIES INC13 citations72
US3963593AJun 15, 1976
Electrodes having silicide surface
PPG INDUSTRIES INC3 citations63
US3958741AMay 25, 1976
Method of mounting silicon anodes in a chlor-alkali cell
PPG INDUSTRIES INC1 citations51
US4253924AMar 3, 1981
Solid polymer electrolyte chlor-alkali process
PPG INDUSTRIES INC0 citations42