Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9699828 | Optimized synchronization procedure for prolonged periods of sleep | Sajal Kumar Das, Ravitej Ballakur, Nicklas Johansson, John Walter Diachina | 2017-07-04 |
| 9398634 | Mobile station, core network node, base station subsystem, and methods for implementing longer paging cycles in a cellular network | Paul Schliwa-Bertling, Mårten Sundberg, Sajal Kumar Das, Ravitej Ballakur, John Walter Diachina +1 more | 2016-07-19 |
| 7809381 | Presence detection for cellular and internet protocol telephony | Justin A. Aborn, Karl Freter, Sanjay Subir Jhawar, James O'Brien, Bruce Wiatrak +2 more | 2010-10-05 |
| 4728138 | Automatically acting, lockable hoisting block | — | 1988-03-01 |