Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6734837 | Variable color display system for comparing exhibited value with limit | — | 2004-05-11 |
| 6690343 | Display device with variable color background for evaluating displayed value | — | 2004-02-10 |
| 6577287 | Dual variable color display device | — | 2003-06-10 |
| 6535186 | Multicolor display element | — | 2003-03-18 |
| 6424327 | Multicolor display element with enable input | — | 2002-07-23 |
| 6414662 | Variable color complementary display device using anti-parallel light emitting diodes | — | 2002-07-02 |
| 6310590 | Method for continuously controlling color of display device | — | 2001-10-30 |
| 6300923 | Continuously variable color optical device | — | 2001-10-09 |
| 6281864 | Digital display system for variable color decimal point indication | — | 2001-08-28 |
| 6239776 | Multicolor multi-element display system | — | 2001-05-29 |
| 6219014 | Variable color display device having display area and background area | — | 2001-04-17 |
| 6208322 | Color control signal converter | — | 2001-03-27 |
| 6181126 | Dual variable color measuring system | — | 2001-01-30 |
| 6166710 | Variable color display system for sequentially exhibiting digital values | — | 2000-12-26 |
| 6147483 | Variable color digital voltmeter with analog comparator | — | 2000-11-14 |
| 6133722 | Variable color digital measuring and testing system with error memory | — | 2000-10-17 |
| 6121767 | Digital multimeter with variable color range indication | — | 2000-09-19 |
| 6121944 | Method of indicating and evaluating measured value | — | 2000-09-19 |
| 6119073 | Variable color digital measuring instrument for sequentially exhibiting measured values | — | 2000-09-12 |
| 6018237 | Variable color display system | — | 2000-01-25 |
| 5963185 | Display device with variable color background area | — | 1999-10-05 |
| 5656935 | Variable color display system | — | 1997-08-12 |
| 5561365 | Digital color display system | — | 1996-10-01 |
| 5475300 | Variable color digital multimeter | — | 1995-12-12 |
| 5283517 | Variable color digital multimeter | — | 1994-02-01 |