Patent Explorer
Browse, filter, and analyze 217 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB2020037A | Apparatus for and method of compensation for errors in theheading output signal of a magnetic azimuth detector | Unisys Corp | Expired / Lapsed | 1979-04-27 | — | 1999-04-27 | 0.0 yrs | 0 | |
| GB736144A | Binary automatic computer | Unisys Corp | Expired / Lapsed | 1951-08-15 | — | 1971-08-15 | 0.0 yrs | 0 | |
| GB749836A | Electronic system for computing and otherwise handling information | Unisys Corp | Expired / Lapsed | 1953-03-30 | — | 1973-03-30 | 0.0 yrs | 0 | |
| US4494192A | High speed bus architecture | Unisys Corp | Expired / Lapsed | 1982-07-21 | 1985-01-15 | 2002-07-21 | 0.0 yrs | 23 | |
| US4410944A | Apparatus and method for maintaining cache memory integrity in a shared memory environment | Unisys Corp | Expired / Lapsed | 1981-03-24 | 1983-10-18 | 2001-03-24 | 0.0 yrs | 7 | |
| US4228503A | Multiplexed directory for dedicated cache memory system | Unisys Corp | Expired / Lapsed | 1978-10-02 | 1980-10-14 | 1998-10-02 | 0.0 yrs | 12 | |
| US4139147A | Asynchronous digital circuit testing and diagnosing system | Unisys Corp | Expired / Lapsed | 1977-09-02 | 1979-02-13 | 1997-09-02 | 0.0 yrs | 19 | |
| US4107664A | Raster scanned display system | Unisys Corp | Expired / Lapsed | 1976-07-06 | 1978-08-15 | 1996-07-06 | 0.0 yrs | 10 | |
| US4097797A | Apparatus for testing electrical circuit units such as printed circuit cards | Unisys Corp | Expired / Lapsed | 1976-06-07 | 1978-06-27 | 1996-06-07 | 0.0 yrs | 12 | |
| US4057847A | Remote controlled test interface unit | Unisys Corp | Expired / Lapsed | 1976-06-14 | 1977-11-08 | 1996-06-14 | 0.0 yrs | 16 | |
| US4009470A | Pre-emptive, rotational priority system | Unisys Corp | Expired / Lapsed | 1975-02-18 | 1977-02-22 | 1995-02-18 | 0.0 yrs | 14 | |
| US3967247A | Storage interface unit | Unisys Corp | Expired / Lapsed | 1974-11-11 | 1976-06-29 | 1994-11-11 | 0.0 yrs | 4 | |
| US3921145A | Multirequest grouping computer interface | Unisys Corp | Expired / Lapsed | 1973-10-12 | 1975-11-18 | 1993-10-12 | 0.0 yrs | 5 | |
| US3919692A | Fast inhibit gate with applications | Unisys Corp | Expired / Lapsed | 1972-12-01 | 1975-11-11 | 1992-12-01 | 0.0 yrs | 12 | |
| US3914677A | Precision motion control device or the like | Unisys Corp | Expired / Lapsed | 1973-06-08 | 1975-10-21 | 1993-06-08 | 0.0 yrs | 12 | |
| US3889237A | Common storage controller for dual processor system | Unisys Corp | Expired / Lapsed | 1973-11-16 | 1975-06-10 | 1993-11-16 | 0.0 yrs | 22 | |
| US3848234A | Multi-processor system with multiple cache memories | Unisys Corp | Expired / Lapsed | 1973-04-04 | 1974-11-12 | 1993-04-04 | 0.0 yrs | 18 | |
| US3749940A | Keyboard strobe filter for static keyboards | Unisys Corp | Expired / Lapsed | 1972-04-21 | 1973-07-31 | 1992-04-21 | 0.0 yrs | 5 | |
| US3732390A | Keyswitch | Unisys Corp | Expired / Lapsed | 1971-12-27 | 1973-05-08 | 1991-12-27 | 0.0 yrs | 4 | |
| US3728693A | Programmatically controlled interrupt system for controlling input/output operations in a digital computer | Unisys Corp | Expired / Lapsed | 1972-04-28 | 1973-04-17 | 1992-04-28 | 0.0 yrs | 28 |
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