The Chamberlain Group LLC
512Patents
265Active
512Granted
56Portfolio score
Filing activity: Nov 18, 1983 → Jan 2, 2025 · 65 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4988992A | System for establishing a code and controlling operation of equipment | Physics | 138 | Expired |
| US6181255A | Multi-frequency radio frequency transmitter with code learning capability | Physics | 137 | Expired |
| US6154544A | Rolling code security system | Emerging Cross-Sectional Technologies | 129 | Expired |
| US5872513A | Garage door opener and wireless keypad transmitter with temporary password feature | Physics | 122 | Expired |
| US6998977B2 | Method and apparatus for monitoring a movable barrier over a network | Physics | 120 | Expired |
| US5969637A | Garage door opener with light control | Emerging Cross-Sectional Technologies | 113 | Expired |
| US4973257A | Battery terminal | Electricity | 81 | Expired |
| US6810123B2 | Rolling code security system | Emerging Cross-Sectional Technologies | 70 | Expired |
| US6025785A | Multiple code formats in a single garage door opener including at least one fixed code format and at least one rolling code format | Physics | 70 | Expired |
| US5751224A | Code learning system for a movable barrier operator | Physics | 69 | Expired |
| US9396598B2 | Remote guest access to a secured premises | Electricity | 69 | Active |
| US6690796B1 | Rolling code security system | Electricity | 68 | Expired |
| USRE35364E | Coding system for multiple transmitters and a single receiver for a garage door opener | General | 67 | Expired |
| US6822603B1 | Method and apparatus for transmitting a plurality of different codes at a plurality of different frequencies | Physics | 66 | Expired |
| USD440043S | Power tool case | General | 66 | Expired |
| US6014307A | Fire door operator having an integrated electronically controlled descent device | Fixed Constructions | 66 | Expired |
| US6414587B1 | Code learning system for a movable barrier operator | Physics | 64 | Expired |
| USD722983S1 | Garage door accessory | General | 63 | Active |
| USD501643S1 | Transmitter for a monitor for a movable barrier | General | 62 | Expired |
| US5949349A | Code responsive radio receiver capable of operation with plural types of code transmitters | Physics | 60 | Expired |
| US6486795B1 | Universal transmitter | Physics | 58 | Expired |
| US7332999B2 | System and method for operating multiple moveable barrier operators | Physics | 58 | Expired |
| US5576701A | Remote actuating apparatus comprising keypad controlled transmitter | Physics | 57 | Expired |
| US7227444B2 | Method and apparatus for remote control | Physics | 56 | Expired |
| US5656900A | Retro-reflective infrared safety sensor for garage door operators | Fixed Constructions | 54 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.