David B. Johnson
52Patents
17h-index
58Co-inventors
87Inventor score
Filing activity: Jul 9, 1979 → May 26, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6625135B1 | Method and apparatus for incorporating environmental information for mobile communications | Electricity | 157 | Expired |
| US4480307A | Interface for use between a memory and components of a module switching apparatus | Physics | 148 | Expired |
| US4503535A | Apparatus for recovery from failures in a multiprocessing system | Physics | 148 | Expired |
| US4438494A | Apparatus of fault-handling in a multiprocessing system | Physics | 122 | Expired |
| US4673490A | Process for separating crude oil components | Chemistry; Metallurgy | 83 | Expired |
| US6771609B1 | Method and apparatus for dynamically updating representation of a work site and a propagation model | Electricity | 82 | Expired |
| US4473880A | Arbitration means for controlling access to a bus shared by a number of modules | Physics | 69 | Expired |
| US4853846A | Bus expander with logic for virtualizing single cache control into dual channels with separate directories and prefetch for different processors | Physics | 62 | Expired |
| US5006982A | Method of increasing the bandwidth of a packet bus by reordering reply packets | Physics | 51 | Expired |
| US5673393A | Managing bandwidth over a computer network having a management computer that allocates bandwidth to client computers upon request | Electricity | 44 | Expired |
| US4503534A | Apparatus for redundant operation of modules in a multiprocessing system | Physics | 40 | Expired |
| US4784205A | Display system | Physics | 37 | Expired |
| US4792955A | Apparatus for on-line checking and reconfiguration of integrated circuit chips | Physics | 36 | Expired |
| US5444848A | Distribution of communications connections over multiple service access points by choosing remote and local access points having lowest number of connections | Electricity | 33 | Expired |
| US4903270A | Apparatus for self checking of functional redundancy check (FRC) logic | Physics | 26 | Expired |
| US6111159A | Hydrocarbon conversion process | Chemistry; Metallurgy | 22 | Expired |
| US5166749A | Step scanning technique for interferometer | Physics | 21 | Expired |
| US5333034A | System for selectively controlling the spectral make-up of visible light from a source thereof | Physics | 14 | Expired |
| US10600128B2 | Mobile expense report system | Physics | 13 | Active |
| USD294218S | Corkscrew | General | 11 | Expired |
| US5842811A | Confined space manhole sign system | Fixed Constructions | 11 | Expired |
| US5657122A | Technique for achieving preferred optical alignment in a scanning interferometer | Physics | 10 | Expired |
| USD344287S | Combined pen, chain and wall-mountable bracket therefor | General | 7 | Expired |
| USD867075S1 | Cup holder with electronic display | General | 6 | Active |
| US6025534A | Olefin polymerization process | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.