Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5960348 | Technique for use in processing telephone calls | Allen Eisdorfer, Mark Jeffrey Foladare, Shelley B. Goldman, Nancy Murray, David Phillip Silverman | 1999-09-28 |
| 5893903 | Multimedia message system with revenue allocation | Allen Eisdorfer, Andreas Constantine Papanicolaou | 1999-04-13 |
| 5894504 | Advanced call waiting and messaging system | Joseph Anderson Alfred, Allen Eisdorfer, Christopher Gregory Harrington | 1999-04-13 |
| 5745550 | Multiply accommodated message relaying for hearing impaired callers | Leonard R. Kasday, David Eugene Schulz | 1998-04-28 |
| 5724411 | Method for selectively alerting multiple telephones of an incoming call | Allen Eisdorfer, Jeffrey Charles George | 1998-03-03 |
| 5706339 | Technique for use in processing personal telephone calls | Allen Eisdorfer | 1998-01-06 |
| 5636269 | Intelligent call waiting | — | 1997-06-03 |
| 5475733 | Language accommodated message relaying for hearing impaired callers | Leonard R. Kasday, David Eugene Schulz | 1995-12-12 |