William A. Johnson
47Patents
16h-index
38Co-inventors
81Inventor score
Filing activity: May 21, 1976 → Oct 1, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5663018A | Pattern writing method during X-ray mask fabrication | Physics | 89 | Expired |
| US6078946A | System and method for management of connection oriented networks | Emerging Cross-Sectional Technologies | 79 | Expired |
| US5177461A | Warning light system for use with a smoke detector | Physics | 71 | Expired |
| US5903370A | System for an optical domain | Electricity | 60 | Expired |
| US8202219B2 | Ultrasonic bone assessment apparatus and method | Human Necessities | 44 | Active |
| US5055763A | Electronic battery charger device and method | Electricity | 32 | Expired |
| US4891932A | Grain-saver dam for combine cutter bar | Human Necessities | 31 | Expired |
| US6409178B1 | Multiple layer gasket having selectively removable spacer layers and visual indicators | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5335426A | Method and apparatus for thermal regeneration of molecular sieve material used in oxygen concentrators | Performing Operations; Transporting | 28 | Expired |
| US4970641A | Exception handling in a pipelined microprocessor | Physics | 28 | Expired |
| US5154940A | Method for rapidly heating or cooking a food product | Human Necessities | 27 | Expired |
| US4094532A | Torsion bar adjusting device | Performing Operations; Transporting | 25 | Expired |
| US4046320A | Fireplace boiler heating system for hot water type furnaces | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6070401A | Grain saver dam | Human Necessities | 24 | Expired |
| US5992804A | Seat pedestal assembly | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4790018A | Frequency selection circuit for hearing aids | Electricity | 18 | Expired |
| US4614433A | Mask-to-wafer alignment utilizing zone plates | Physics | 14 | Expired |
| US6605765B1 | Acoustic guitar with internally located cassette tape player | Physics | 14 | Expired |
| US6099355A | PC card rugged interconnect | Electricity | 12 | Expired |
| US6962345B2 | MLS gasket with bore edge stopper bead | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5404115A | Variable gain amplifier | Electricity | 10 | Expired |
| US6228168A | Apparatus and method for automated application of coatings to substrates | Performing Operations; Transporting | 9 | Expired |
| US4743833A | Voltage regulator | Physics | 9 | Expired |
| US6723960B2 | Heater for orthopedic splints | Human Necessities | 9 | Expired |
| US6793120B2 | Apparatus and method for mounting an electrical connector to a glass sheet of a vehicle window | Performing Operations; Transporting | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.