Assignee
KRONOS INC
US20 patents
Top patents by PatentIndex Score
US5408173AApr 18, 1995
Manual-adjustment-free controlled-voltage and current-limited D.C. voltage supply
KRONOS INC80 citations94
US6399033B1Jun 4, 2002
Process for increasing the yield in the manufacture of titanium dioxide by the chloride process
KRONOS INC32 citations92
US4270043AMay 26, 1981
Methods of and apparatus for time clock recording and computation and related uses
KRONOS INC65 citations92
US5471043ANov 28, 1995
Electro-optic barcode reader
KRONOS INC26 citations89
US5282977AFeb 1, 1994
Separation of heavy metals from waste water of the titanium dioxide industry
KRONOS INC25 citations89
US5683669ANov 4, 1997
Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process
KRONOS INC20 citations86
US5451252ASep 19, 1995
Subpigmentary titanium dioxide with improved photostability
KRONOS INC47 citations84
US5942201AAug 24, 1999
Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide
KRONOS INC11 citations73
US5536487AJul 16, 1996
Process for the use of rutile promoter and control additives in the manufacture of titanium dioxide by the chloride process
KRONOS INC14 citations73
US4567357AJan 28, 1986
Method of and apparatus for automatic line identification for recording on employee time cards and the like
KRONOS INC8 citations73
US5334362AAug 2, 1994
Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process
KRONOS INC11 citations71
US5407650AApr 18, 1995
Process for purifying a technical iron chloride solution by selective precipitation
KRONOS INC19 citations70
US4818969AApr 4, 1989
Method of fixed-length binary encoding and decoding and apparatus for same
KRONOS INC19 citations69
US5248497ASep 28, 1993
Production of purified iron chloride by a vacuum process in the manufacture of titanium dioxide
KRONOS INC7 citations65
US5298169AMar 29, 1994
Treatment of waste sulfuric acid by gypsum precipitation in a titanium dioxide process
KRONOS INC16 citations63
US5409679AApr 25, 1995
Process for the production of titanium dioxide
KRONOS INC5 citations62
US5540907AJul 30, 1996
Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent
KRONOS INC6 citations59
US5326963AJul 5, 1994
Electro-optic barcode reader
KRONOS INC4 citations59
US4524266AJun 18, 1985
Method of and apparatus for discriminating between various types of check-out periods in employee time-recording systems and the like
KRONOS INC13 citations59
US4361092ANov 30, 1982
Process and apparatus for time card preparation and utilization and the like
KRONOS INC6 citations54