William A. Ryan
13Patents
8h-index
18Co-inventors
69Inventor score
Filing activity: Nov 19, 1986 → Apr 24, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4736871A | Liquid measuring dispenser | Physics | 121 | Expired |
| US5291942A | Multiple stage sorption and desorption process and apparatus | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5442931A | Simplified adsorption heat pump using passive heat recuperation | Emerging Cross-Sectional Technologies | 40 | Expired |
| US8170244B2 | Microphone having multiple transducer elements | Electricity | 37 | Active |
| US8798304B2 | Acoustic valve mechanisms | Electricity | 25 | Active |
| US5255534A | System and process for operating and absorption cycle around a crystallization curve of the solution | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6991554B2 | Sports equipment swing training apparatus and method of use | Human Necessities | 11 | Expired |
| US8594347B2 | Microphone having multiple transducer elements | Electricity | 11 | Active |
| US9712913B2 | Acoustic sound adsorption material having attached sphere matrix | Electricity | 8 | Active |
| US7556568B2 | Sports equipment swing training apparatus | Human Necessities | 5 | Expired |
| US10820083B2 | Acoustic assembly having an acoustically permeable membrane | Electricity | 5 | Active |
| US5216891A | Solution flows in direct expansion lithium bromide air conditioner/heater | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9872116B2 | Apparatus and method for detecting earphone removal and insertion | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.