Hello Direct, Inc.
32Patents
0Active
32Granted
32Portfolio score
Filing activity: Sep 28, 1992 → May 17, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5369857A | Method of making a telephone headset | Emerging Cross-Sectional Technologies | 174 | Expired |
| US6016347A | Optical switch for headset | Electricity | 103 | Expired |
| USD346802S | Headset | General | 78 | Expired |
| US5953435A | Intra-concha stabilizer with length adjustable conchal wall hook | Electricity | 43 | Expired |
| USD493175S1 | Multimedia adapter for a headset amplifier | General | 29 | Expired |
| US6320960A | Headset with adjustable earpiece | Electricity | 29 | Expired |
| US6775390B1 | Headset with movable earphones | Electricity | 26 | Expired |
| USD391576S | Earbud stabilizer | General | 24 | Expired |
| USD386495S | Cordless telephone remote pack and base unit | General | 20 | Expired |
| USD454556S1 | Remote telephone transceiver | General | 19 | Expired |
| USD462337S1 | Base for a remote telephone transceiver | General | 18 | Expired |
| USD436095S | Headset with adjustable earpiece | General | 17 | Expired |
| US6343126B1 | Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system | Electricity | 15 | Expired |
| USD475994S1 | Headset amplifier and multimedia adapter | General | 13 | Expired |
| US5912964A | Adaptive telephone handset interface | Electricity | 13 | Expired |
| USD468722S1 | Headset with moveable earphones | General | 13 | Expired |
| US5937031A | Smart interface technology | Electricity | 11 | Expired |
| USD385281S | Conference pro remote microphone | General | 10 | Expired |
| US6081596A | Automatic answering pick-up device | Electricity | 10 | Expired |
| US5930354A | Automatic answering pick-up device | Electricity | 10 | Expired |
| US5892823A | Smart interface technology | Electricity | 10 | Expired |
| US7031454B1 | Method and apparatus for interfacing telephone apparatus to a digital, analog or hybrid telephone switching system | Electricity | 10 | Expired |
| USD494574S1 | Headset amplifier | General | 9 | Expired |
| USD387065S | Teleconferencing device | General | 7 | Expired |
| USD455418S1 | Base for a headset | General | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.