Kronos, Inc.
🏢 View company profile →20Patents
0Active
20Granted
33Portfolio score
Filing activity: Mar 13, 1979 → Mar 26, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4270043A | Methods of and apparatus for time clock recording and computation and related uses | Physics | 46 | Expired |
| US5408173A | Manual-adjustment-free controlled-voltage and current-limited D.C. voltage supply | Physics | 45 | Expired |
| US5451252A | Subpigmentary titanium dioxide with improved photostability | Chemistry; Metallurgy | 20 | Expired |
| US5471043A | Electro-optic barcode reader | Physics | 20 | Expired |
| US4818969A | Method of fixed-length binary encoding and decoding and apparatus for same | Electricity | 12 | Expired |
| US5683669A | Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process | Performing Operations; Transporting | 10 | Expired |
| US6399033B1 | Process for increasing the yield in the manufacture of titanium dioxide by the chloride process | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4524266A | Method of and apparatus for discriminating between various types of check-out periods in employee time-recording systems and the like | Physics | 9 | Expired |
| US5407650A | Process for purifying a technical iron chloride solution by selective precipitation | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5282977A | Separation of heavy metals from waste water of the titanium dioxide industry | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5942201A | Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide | Performing Operations; Transporting | 7 | Expired |
| US4567357A | Method of and apparatus for automatic line identification for recording on employee time cards and the like | Physics | 5 | Expired |
| US4361092A | Process and apparatus for time card preparation and utilization and the like | Physics | 4 | Expired |
| US5536487A | Process for the use of rutile promoter and control additives in the manufacture of titanium dioxide by the chloride process | Chemistry; Metallurgy | 3 | Expired |
| US5248497A | Production of purified iron chloride by a vacuum process in the manufacture of titanium dioxide | Chemistry; Metallurgy | 3 | Expired |
| US5326963A | Electro-optic barcode reader | Physics | 2 | Expired |
| US5334362A | Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process | Human Necessities | 2 | Expired |
| US5540907A | Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent | Chemistry; Metallurgy | 2 | Expired |
| US5409679A | Process for the production of titanium dioxide | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5298169A | Treatment of waste sulfuric acid by gypsum precipitation in a titanium dioxide process | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.