| Patent | Date |
|---|
Tracking user locations over multiple networks to enable real time communications
Grant 7,908,320 - Ludwig , et al. March 15, 2 | 2011-03-15 |
Storage and playback of media files
Grant 7,831,663 - Ludwig , et al. November 9, 2 | 2010-11-09 |
Storing and accessing media files
Grant 7,822,813 - Ludwig , et al. October 26, 2 | 2010-10-26 |
Storing and accessing media files
Grant 7,730,132 - Ludwig , et al. June 1, 2 | 2010-06-01 |
Method for managing real-time communications
Grant 7,487,210 - Ludwig , et al. February 3, 2 | 2009-02-03 |
Wireless real-time communication
Grant 7,444,373 - Ludwig , et al. October 28, 2 | 2008-10-28 |
Real-time wide-area communications between ports
Grant 7,441,001 - Ludwig , et al. October 21, 2 | 2008-10-21 |
Real-time communication of a selected type
Grant 7,437,412 - Ludwig , et al. October 14, 2 | 2008-10-14 |
Communication of a selected type over a wide area network
Grant 7,437,411 - Ludwig , et al. October 14, 2 | 2008-10-14 |
System for real-time communication between plural users
Grant 7,433,921 - Ludwig , et al. October 7, 2 | 2008-10-07 |
Method for real-time communication between plural users
Grant 7,421,470 - Ludwig , et al. September 2, 2 | 2008-09-02 |
System for managing real-time communications
Grant 7,412,482 - Ludwig , et al. August 12, 2 | 2008-08-12 |
Networked audio communication over two networks
Grant 7,398,296 - Ludwig , et al. July 8, 2 | 2008-07-08 |
Storing and Accessing Media Files
App 20070168426 - Ludwig; Lester F. ; et al. | 2007-07-19 |
Storing and Accessing Media Files
App 20070088781 - Ludwig; Lester F. ; et al. | 2007-04-19 |
Storage and Playback of Media Files
App 20070088782 - Ludwig; Lester F. ; et al. | 2007-04-19 |
Method for real-time communication between plural users
Grant 7,206,809 - Ludwig , et al. April 17, 2 | 2007-04-17 |
Networked Audio Communication with Login Location Information
App 20070083595 - Ludwig; Lester F. ; et al. | 2007-04-12 |
Wireless Networked Audio Communication
App 20070083593 - Ludwig; Lester F. ; et al. | 2007-04-12 |
Device for Wireless Networked Communications
App 20070083594 - Ludwig; Lester F. ; et al. | 2007-04-12 |
Storing and Accessing Media Files
App 20070083596 - Ludwig; Lester F. ; et al. | 2007-04-12 |
System for Managing Real-Time Communications
App 20070078931 - Ludwig; Lester F. ; et al. | 2007-04-05 |
Audio Communication with Login Location Addressing
App 20070078932 - Ludwig; Lester F. ; et al. | 2007-04-05 |
Method for Managing Real-Time Communications
App 20070078930 - Ludwig; Lester F. ; et al. | 2007-04-05 |
Networked Audio Communication Over Two Networks
App 20070078933 - Ludwig; Lester F. ; et al. | 2007-04-05 |
Participant display and selection in video conference calls
Grant 7,185,054 - Ludwig , et al. February 27, 2 | 2007-02-27 |
System for real-time communication between plural users
Grant 7,152,093 - Ludwig , et al. December 19, 2 | 2006-12-19 |
Marking and searching capabilities in multimedia documents within multimedia collaboration networks
Grant 7,054,904 - Ludwig , et al. May 30, 2 | 2006-05-30 |
Registration based addressing and call handles to establish communication
App 20060075121 - Ludwig; Lester F. ; et al. | 2006-04-06 |
Using login-based addressing to communicate with listed users
App 20060064461 - Ludwig; Lester F. ; et al. | 2006-03-23 |
Registration based addressing over multiple networks with digital audio communication
App 20060059266 - Ludwig; Lester F. ; et al. | 2006-03-16 |
Audio communications using devices with different capabilities
App 20060041616 - Ludwig; Lester F. ; et al. | 2006-02-23 |
Log-in based communications plus two data types
App 20060041617 - Ludwig; Lester F. ; et al. | 2006-02-23 |
System for real-time communication between plural users
App 20040107253 - Ludwig, Lester F. ; et al. | 2004-06-03 |
Method for real-time communication between plural users
App 20040107254 - Ludwig, Lester F. ; et al. | 2004-06-03 |
System for real-time communication between plural users
App 20040107255 - Ludwig, Lester F. ; et al. | 2004-06-03 |
Method for real-time communication between plural users
App 20040103152 - Ludwig, Lester F. ; et al. | 2004-05-27 |
Dedicated echo canceler for a workstation
Grant 6,594,688 - Ludwig , et al. July 15, 2 | 2003-07-15 |
Videoconferencing hardware
Grant 6,583,806 - Ludwig , et al. June 24, 2 | 2003-06-24 |
Videoconferencing Hardware
App 20020154210 - LUDWIG, LESTER F. ; et al. | 2002-10-24 |
Marking and searching capabilities in multimedia documents within multimedia collaboration networks
App 20020124051 - Ludwig, Lester F. ; et al. | 2002-09-05 |
Method and system for log-in-based video and multimedia calls
Grant 6,351,762 - Ludwig , et al. February 26, 2 | 2002-02-26 |
Remote participant hold and disconnect during videoconferencing
Grant 6,343,314 - Ludwig , et al. January 29, 2 | 2002-01-29 |
Dedicated echo canceler for a workstation
App 20010044826 - Ludwig, Lester F. ; et al. | 2001-11-22 |
Multimedia collaboration system
Grant 6,237,025 - Ludwig , et al. May 22, 2 | 2001-05-22 |
Multimedia mail, conference recording and documents in video conferencing
Grant 5,978,835 - Ludwig , et al. November 2, 1 | 1999-11-02 |
Synchronization in video conferencing
Grant 5,915,091 - Ludwig , et al. June 22, 1 | 1999-06-22 |
System for call request which results in first and second call handle defining call state consisting of active or hold for its respective AV device
Grant 5,896,500 - Ludwig , et al. April 20, 1 | 1999-04-20 |
System for providing a directory of AV devices and capabilities and call processing such that each participant participates to the extent of capabilities available
Grant 5,884,039 - Ludwig , et al. March 16, 1 | 1999-03-16 |
Two monitor videoconferencing hardware
Grant 5,867,654 - Ludwig , et al. February 2, 1 | 1999-02-02 |
System for teleconferencing in which collaboration types and participants by names or icons are selected by a participant of the teleconference
Grant 5,854,893 - Ludwig , et al. December 29, 1 | 1998-12-29 |
Teleconferencing system in which location video mosaic generator sends combined local participants images to second location video mosaic generator for displaying combined images
Grant 5,802,294 - Ludwig , et al. September 1, 1 | 1998-09-01 |
Call control in video conferencing allowing acceptance and identification of participants in a new incoming call during an active teleconference
Grant 5,758,079 - Ludwig , et al. May 26, 1 | 1998-05-26 |
Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal
Grant 5,689,641 - Ludwig , et al. November 18, 1 | 1997-11-18 |
Multimedia collaboration system with separate data network and A/V network controlled by information transmitting on the data network
Grant 5,617,539 - Ludwig , et al. April 1, 1 | 1997-04-01 |
Sine-cosine Generator Comprised Of A Diode Array
Grant 3,569,684 - Burnett March 9, 1 | 1971-03-09 |
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