| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Canada | 1 | |
| #6 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Audio-visual technology | |
| #3 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Selecting | |
| #3 | Television | |
| #4 | Transmission | |
| #5 | Amplification control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cromack Mark R | 7 |
| #2 | Underwood James M | 4 |
| #3 | Raman Vijay R | 4 |
| #4 | Bladon R Anthony | 3 |
| #5 | Brahm David | 3 |
| #6 | Zhang Xiao-Ling | 3 |
| #7 | Pham Nam H | 3 |
| #8 | Trandal David | 3 |
| #9 | Vanderford Jan | 3 |
| #10 | Smith Shawn W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU1939295A | Method and apparatus for reliable access to audio and facsimile message storage and retrieval system | |
| AU3425093A | Voice controlled messaging system and processing method | |
| CA2116584A1 | Adaptive echo canceller for voice messaging system | |
| US5267322A | Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization | |
| US5163050A | Configurable parameter dtmf detector | |
| US4689760A | Digital tone decoder and method of decoding tones using linear prediction coding |