Inventor
David Edward Johnston
Inventor
Whitby, CA
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication44%
H04QSelecting33%
H04LTransmission of digital information, e.g. telegraphic communication11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
PatentTitleYear
7,864,930'Systems and methods for registration and retrieval of voice mail contact information'20117,587,033'Methods and systems for rendering voice mail messages amenable to electronic processing by mailbox owners'20096,839,422'Method and apparatus for providing local call treatment discrimination for selected calls on a switched telephone network'20056,766,009'Method and system for correlating telephone calls with information delivery'20046,724,876'Method and apparatus for effecting telecommunications service features using call control information extracted from a bearer channel in a telecommunications network'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2005Patents assigned to NEWSTEP NETWORKS INC (2)· patent assignee history
2004Patents assigned to REVD NETWORKS INC (1)· patent assignee history
2004–2011Based in Whitby, CA· patent location history
2009–2011Patents assigned to BCE INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BCE INC | 2 | 2009–2011 |
| NEWSTEP NETWORKS INC | 2 | 2004–2005 |
| REVD NETWORKS INC | 1 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Whitby, CA | 5 | 2004–2011 |