Derek E. Williams
362Patents
28h-index
111Co-inventors
93Inventor score
Filing activity: Dec 14, 1995 → Dec 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6748518B1 | Multi-level multiprocessor speculation mechanism | Physics | 98 | Expired |
| US5895495A | Demand-based larx-reserve protocol for SMP system buses | Physics | 83 | Expired |
| US6691220B1 | Multiprocessor speculation mechanism via a barrier speculation flag | Physics | 74 | Expired |
| US6470478B1 | Method and system for counting events within a simulation model | Physics | 70 | Expired |
| US6625660B1 | Multiprocessor speculation mechanism for efficiently managing multiple barrier operations | Physics | 64 | Expired |
| US6880073B2 | Speculative execution of instructions and processes before completion of preceding barrier operations | Physics | 63 | Expired |
| US7213248B2 | High speed promotion mechanism suitable for lock acquisition in a multiprocessor data processing system | Physics | 57 | Expired |
| US6829762B2 | Method, apparatus and system for allocating and accessing memory-mapped facilities within a data processing system | Physics | 54 | Expired |
| US6829698B2 | Method, apparatus and system for acquiring a global promotion facility utilizing a data-less transaction | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6590929B1 | Method and system for run-time logic verification of operations in digital systems | Physics | 45 | Expired |
| US6963967B1 | System and method for enabling weak consistent storage advantage to a firmly consistent storage architecture | Physics | 43 | Expired |
| US6609192B1 | System and method for asynchronously overlapping storage barrier operations with old and new storage operations | Physics | 41 | Expired |
| US9696928B2 | Memory transaction having implicit ordering effects | Physics | 38 | Active |
| US6029204A | Precise synchronization mechanism for SMP system buses using tagged snoop operations to avoid retries | Physics | 38 | Expired |
| US6014721A | Method and system for transferring data between buses having differing ordering policies | Physics | 37 | Expired |
| US6748501B2 | Microprocessor reservation mechanism for a hashed address system | Physics | 35 | Expired |
| US6212605A | Eviction override for larx-reserved addresses | Physics | 35 | Expired |
| US6195627A | Method and system for instrumenting simulation models | Physics | 35 | Expired |
| US6195629A | Method and system for selectively disabling simulation model instrumentation | Physics | 33 | Expired |
| US6497362B2 | Method and apparatus for wireless assistance for self-service checkout | Electricity | 33 | Expired |
| US6175930A | Demand based sync bus operation | Physics | 32 | Expired |
| US6785774B2 | High performance symmetric multiprocessing systems via super-coherent data mechanisms | Physics | 31 | Expired |
| US6606702B1 | Multiprocessor speculation mechanism with imprecise recycling of storage operations | Physics | 31 | Expired |
| US6704844B2 | Dynamic hardware and software performance optimizations for super-coherent SMP systems | Physics | 30 | Expired |
| US6889344B2 | System and method for exposing hidden events on system buses | Physics | 30 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.