David B Ramsden
Inventor
Stats
- 3 total patents issued
- 4 total patents filed
- most recent filing
This is official USPTO record data
Details
- 3 Issued Patents
- 4 Filed Patents
- 14 Total Citation Count
- Dec 17, 2009 Most Recent Filing
- Feb 27, 1992 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| AT&T INTELLECTUAL PROPERTY I, L.P. | 1 2 | 2006 2009 |
| LUCENT TECHNOLOGIES INC. | 1 | 1992 |
| AT&T BELL LABORATORIES | 1 | 1992 |
| AMERICAN TELEPHONE AND TELEGRAPH COMPANY | 1 | 1992 |
Inventor Addresses
| Address | Duration |
|---|---|
| Wall, NJ | Jun 01, 93 - Jun 01, 93 |
| Wall, NJ, US | Apr 07, 09 - Mar 05, 13 |
Technology Profile
| Technology | # of Patents | |
|---|---|---|
| G06F: | ELECTRIC DIGITAL DATA PROCESSING | 1 |
| H04B: | TRANSMISSION | 1 |
| H04J: | MULTIPLEX COMMUNICATION | 1 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 8,391,126 | 2013 | Method and apparatus for providing echo cancellation in a network | 0 |
| 2011/0149,815 | 2011 | METHOD AND APPARATUS FOR PROVIDING ECHO CANCELLATION IN A NETWORK | 0 |
| 7,516,033 | 2009 | Method and apparatus for identifying echo sources in a communication path | 0 |
| 5,216,702 | 1993 | Nonintrusive speech level and dynamic noise measurements | 14 |
