Patent Explorer
Browse, filter, and analyze 14 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3988606A | Digital filter device for processing binary-coded signal samples | US Philips Corp | Expired / Lapsed | 1975-05-30 | 1976-10-26 | 1995-05-30 | 0.0 yrs | 11 | |
| US3973199A | Prediction differential pulse code modulation system with adaptive compounding | US Philips Corp | Expired / Lapsed | 1974-08-29 | 1976-08-03 | 1994-08-29 | 0.0 yrs | 13 | |
| US3761879A | Bus transport system for selection information and data | US Philips Corp | Expired / Lapsed | 1972-05-08 | 1973-09-25 | 1992-05-08 | 0.0 yrs | 4 | |
| US3632883A | Telecommunication exchange with time division multiplex | US Philips Corp | Expired / Lapsed | 1969-07-02 | 1972-01-04 | 1989-07-02 | 0.0 yrs | 4 | |
| US3538417A | Bridge type frequency converter | US Philips Corp | Expired / Lapsed | 1968-03-05 | 1970-11-03 | 1988-03-05 | 0.0 yrs | 0 | |
| US3381288A | Apparatus for the remote indication of the position of a rotary shaft | US Philips Corp | Expired / Lapsed | 1963-03-21 | 1968-04-30 | 1983-03-21 | 0.0 yrs | 1 | |
| US3307171A | Apparatus for energizing an electrical load device | US Philips Corp | Expired / Lapsed | 1963-06-20 | 1967-02-28 | 1983-06-20 | 0.0 yrs | 2 | |
| US3228230A | Integrator with automatic compensation of the variation of the zeropoint | US Philips Corp | Expired / Lapsed | 1962-01-04 | 1966-01-11 | 1982-01-04 | 0.0 yrs | 2 | |
| US3223907A | Apparatus for the production of ultrasonic oscillations | US Philips Corp | Expired / Lapsed | 1962-10-01 | 1965-12-14 | 1982-10-01 | 0.0 yrs | 1 | |
| US3187164A | Device for the protection of electrical apparatus | US Philips Corp | Expired / Lapsed | 1962-12-05 | 1965-06-01 | 1982-12-05 | 0.0 yrs | 1 | |
| US3163489A | Electrothermal printing or recording apparatus | US Philips Corp | Expired / Lapsed | 1962-07-09 | 1964-12-29 | 1982-07-09 | 0.0 yrs | 2 | |
| US3088036A | Particle counting apparatus | US Philips Corp | Expired / Lapsed | 1957-05-27 | 1963-04-30 | 1977-05-27 | 0.0 yrs | 2 | |
| US2951995A | Circuit for controlling the resonance frequency of an oscillatory circuit | US Philips Corp | Expired / Lapsed | 1957-09-16 | 1960-09-06 | 1977-09-16 | 0.0 yrs | 0 | |
| US2944166A | Bistable trigger circuit | US Philips Corp | Expired / Lapsed | 1957-09-19 | 1960-07-05 | 1977-09-19 | 0.0 yrs | 0 |