Wheelock, Inc.
47Patents
10Active
47Granted
42Portfolio score
Filing activity: Mar 30, 1988 → Sep 26, 2011 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6462665B1 | Method and apparatus for sending a weather condition alert | Physics | 111 | Expired |
| US5608375A | Synchronized visual/audible alarm system | Physics | 53 | Expired |
| US5684467A | Universal mounting plate for audible-visual alarms | Physics | 33 | Expired |
| US5751210A | Synchronized video/audio alarm system | Physics | 31 | Expired |
| US5969627A | Audible and audible-visible alarms with interchangeable cover | Physics | 31 | Expired |
| US5400009A | Synchronization circuit for visual/audio alarms | Electricity | 30 | Expired |
| US5341069A | Microprocessor-controlled strobe light | Electricity | 23 | Expired |
| US5128591A | Strobe alarm circuit | Electricity | 23 | Expired |
| US6311021A | Multi-candela alarm unit | Physics | 23 | Expired |
| US5121033A | Strobe circuit utilizing optocoupler in DC-to-DC converter | Electricity | 22 | Expired |
| US5805071A | Universal mounting plate for audible-visual alarms | Physics | 22 | Expired |
| US4967177A | Audiovisual signaling device and method | Physics | 21 | Expired |
| USRE38183E1 | Synchronization circuit for visual/audio alarms | General | 21 | Expired |
| US5293155A | Interface for a supervised multi-input audible warning system | Physics | 20 | Expired |
| US5982275A | Synchronized video/audio alarm system | Physics | 20 | Expired |
| USD315112S | Alarm signal cover | General | 19 | Expired |
| US6271763A | Audible and audible-visible alarms with interchangeable cover | Physics | 17 | Expired |
| USD374635S | Cover for an audible-visual alarm | General | 14 | Expired |
| US6194994A | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | Physics | 14 | Expired |
| US6411201B1 | Strobe alarm with strobe intensity selector switch | Physics | 14 | Expired |
| US5347259A | Strobe warning light | Physics | 13 | Expired |
| US5475361A | Strobe warning light | Physics | 13 | Expired |
| US5673030A | Zero inrush alarm circuit | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6369696B2 | Apparatus and method for synchronizing visual/audible alarm units in an alarm system | Physics | 11 | Expired |
| US6217196A | Strobe light system | Mechanical Engineering; Lighting; Heating | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.