Membrain, LLC
9Patents
2Active
9Granted
30Portfolio score
Filing activity: Jun 20, 1980 → Apr 3, 2007 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4638481A | Method and apparatus for generating sequence of multibit words | Physics | 13 | Expired |
| US4727317A | Device orientation test method suitable for automatic test equipment | Physics | 11 | Expired |
| US4827208A | Circuit testers | Physics | 11 | Expired |
| US4377782A | Fault location methods and apparatus using current pulse injection | Physics | 10 | Expired |
| US4345201A | Fault location system with enhanced noise immunity | Physics | 6 | Expired |
| US4445085A | Fault location methods and apparatus using current pulse injection | Physics | 6 | Expired |
| US4774455A | Method for automatic guard selection in automatic test equipment | Physics | 5 | Expired |
| US8157098B2 | System and method for providing audio content to a person | Human Necessities | 2 | Active |
| US8157097B2 | System and method for providing audio content to a person | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.