MEDECO SECURITY LOCKS, INC.
62Patents
10Active
62Granted
37Portfolio score
Filing activity: Jul 14, 1978 → Oct 2, 2014 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5745044A | Electronic security system | Electricity | 224 | Expired |
| US5140317A | Electronic security system | Emerging Cross-Sectional Technologies | 158 | Expired |
| US6005487A | Electronic security system with novel electronic T-handle lock | Emerging Cross-Sectional Technologies | 128 | Expired |
| US6384711B1 | Electronic lock in cylinder of standard lock | Emerging Cross-Sectional Technologies | 114 | Expired |
| US4723427A | Symmetrical side bar lock and key therefor | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6082153A | Anti-tampering device for use with spring-loaded electronically moved pin locking mechanisms in electronic locks and the like | Emerging Cross-Sectional Technologies | 86 | Expired |
| US6477875B2 | Rotating pin tumbler side bar lock with side bar control | Emerging Cross-Sectional Technologies | 84 | Expired |
| US5319362A | Security system with security access database distributed among individual access devices | Physics | 64 | Expired |
| US5839307A | Electromechanical cylinder lock with rotary release | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4552001A | High security T-handle assembly | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4635455A | Cylinder lock | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5671523A | Method for supporting keys and key blanks during cutting thereof | Emerging Cross-Sectional Technologies | 50 | Expired |
| USD285772S | Dead-bolt lock | General | 48 | Expired |
| US7690231B1 | Electromechanical cylinder lock | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4998952A | Key for electronic and mechanical locks | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4732022A | Key for an improved twisting tumbler cylinder lock | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5541581A | Electronic combination lock security system | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5775148A | Universal apparatus for use with electronic and/or mechanical access control devices | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6467602B2 | Electromechanical parking meter door communications interface | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6945082B2 | Key blank, key and master keying system | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4530223A | Guard for key cylinder | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6382006B1 | Removable cylindrical lock core | Emerging Cross-Sectional Technologies | 35 | Expired |
| USRE35518E | Restricted key system | General | 34 | Expired |
| US5088306A | Cylinder lock with changeable keyway | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4688409A | Drop-bolt door lock assembly | Emerging Cross-Sectional Technologies | 32 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.