Douglas B. MacGregor
23Patents
13h-index
12Co-inventors
70Inventor score
Filing activity: Dec 3, 1982 → Feb 26, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4524415A | Virtual machine data processor | Physics | 89 | Expired |
| US4566063A | Data processor which can repeat the execution of instruction loops with minimal instruction fetches | Physics | 63 | Expired |
| US4584640A | Method and apparatus for a compare and swap instruction | Physics | 53 | Expired |
| US4715013A | Coprocessor instruction format | Physics | 34 | Expired |
| US4729094A | Method and apparatus for coordinating execution of an instruction by a coprocessor | Physics | 30 | Expired |
| US4493035A | Data processor version validation | Physics | 28 | Expired |
| US4750110A | Method and apparatus for executing an instruction contingent upon a condition present in another data processor | Physics | 26 | Expired |
| US4731736A | Method and apparatus for coordinating execution of an instruction by a selected coprocessor | Physics | 22 | Expired |
| US4488228A | Virtual memory data processor | Physics | 22 | Expired |
| US4729093A | Microcomputer which prioritizes instruction prefetch requests and data operand requests | Physics | 21 | Expired |
| US4584666A | Method and apparatus for signed and unsigned bounds check | Physics | 17 | Expired |
| US5021991A | Coprocessor instruction format | Physics | 16 | Expired |
| US4763253A | Microcomputer with change of flow | Physics | 14 | Expired |
| US4821231A | Method and apparatus for selectively evaluating an effective address for a coprocessor | Physics | 11 | Expired |
| US4887203A | Microcoded processor executing microroutines with a user specified starting microaddress | Physics | 10 | Expired |
| US4914578A | Method and apparatus for interrupting a coprocessor | Physics | 10 | Expired |
| US4649477A | Operand size mechanism for control simplification | Physics | 8 | Expired |
| US4994961A | Coprocessor instruction format | Physics | 6 | Expired |
| US4758978A | Method and apparatus for selectively evaluating an effective address for a coprocessor | Physics | 5 | Expired |
| US4698747A | Instruction address calculation unit for a microprocessor | Physics | 5 | Expired |
| US4745574A | Microcode testing of PLA's in a data processor | Physics | 5 | Expired |
| US4744049A | Microcode testing of a cache in a data processor | Physics | 4 | Expired |
| US4811274A | Method and apparatus for selectively evaluating an effective address for a coprocessor | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.