Hal Computer Systems, Inc.
37Patents
0Active
37Granted
36Portfolio score
Filing activity: Oct 10, 1990 → Feb 22, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5649136A | Processor structure and method for maintaining and restoring precise state at any instruction boundary | Physics | 103 | Expired |
| US5644742A | Processor structure and method for a time-out checkpoint | Physics | 76 | Expired |
| US5455834A | Fault tolerant address translation method and system | Physics | 67 | Expired |
| US5319590A | "Apparatus for storing ""Don't Care"" in a content addressable memory cell" | Physics | 62 | Expired |
| US5673408A | Processor structure and method for renamable trap-stack | Physics | 56 | Expired |
| US5121003A | Zero overhead self-timed iterative logic | Electricity | 50 | Expired |
| US5266849A | Tri state buffer circuit for dual power system | Electricity | 49 | Expired |
| US5509038A | Multi-path data synchronizer system and method | Electricity | 48 | Expired |
| US5751985A | Processor structure and method for tracking instruction status to maintain precise state | Physics | 48 | Expired |
| US5651124A | Processor structure and method for aggressively scheduling long latency instructions including load/store instructions while maintaining precise state | Physics | 46 | Expired |
| US5659721A | Processor structure and method for checkpointing instructions to maintain precise state | Physics | 43 | Expired |
| US5347481A | Method and apparatus for multiplying denormalized binary floating point numbers without additional delay | Physics | 43 | Expired |
| US5615161A | Clocked sense amplifier with positive source feedback | Physics | 42 | Expired |
| US5644604A | Digital phase selector system and method | Electricity | 39 | Expired |
| US5454094A | Method and apparatus for detecting multiple matches in a content addressable memory | Physics | 38 | Expired |
| US5528553A | Method and apparatus for testing random access memory | Physics | 37 | Expired |
| US5673426A | Processor structure and method for tracking floating-point exceptions | Physics | 37 | Expired |
| US5632028A | Hardware support for fast software emulation of unimplemented instructions | Physics | 35 | Expired |
| US5469443A | Method and apparatus for testing random access memory | Physics | 35 | Expired |
| US5740414A | Method and apparatus for coordinating the use of physical registers in a microprocessor | Physics | 34 | Expired |
| US5347482A | Multiplier tree using nine-to-three adders | Physics | 34 | Expired |
| US5513132A | Zero latency overhead self-timed iterative logic structure and method | Electricity | 24 | Expired |
| US5671151A | Self-timed logic circuit having zero-latency overhead and method for designing same | Electricity | 20 | Expired |
| US5533035A | Error detection and correction method and apparatus | Electricity | 18 | Expired |
| US5655115A | Processor structure and method for watchpoint of plural simultaneous unresolved branch evaluation | Physics | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.