Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12107846 | Sign-up and login interface using a messaging system | Beth Polish, Seth Godin, Robert Gehorsam | 2024-10-01 |
| 12066320 | Calibration system and method | — | 2024-08-20 |
| 11962628 | Real-time event and participant communication systems | Beth Polish, Seth Godin, Robert Gehorsam | 2024-04-16 |
| 11215499 | Calibration apparatus and method | — | 2022-01-04 |
| 9430728 | Electronic identification system with improved sensitivity | Michael L. Beigel, Steven Frank, Robert E. Malm | 2016-08-30 |
| 7737821 | Electronic identification system with improved sensitivity | Michael L. Beigel, Steven Frank, Robert E. Malm | 2010-06-15 |
| 7568617 | Learning fare collection system for mass transit | Martin Friedrich Ludwig Silbernagl | 2009-08-04 |
| 7566003 | Learning fare collection system for mass transit | Martin Friedrich Ludwig Silbernagl | 2009-07-28 |
| 6472975 | Electronic identification system with improved sensitivity | Michael L. Beigel, Steven Frank, Robert E. Malm | 2002-10-29 |
| 6430531 | Bilateral speech system | — | 2002-08-06 |
| 5963202 | System and method for distributing and managing digital video information in a video distribution network | — | 1999-10-05 |
| 5235326 | Multi-mode identification system | Michael L. Beigel, Robert E. Malm | 1993-08-10 |