Inventor
R. Ashby Armistead
Inventor
Los Altos, CA, US
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication35%
H04QSelecting16%
H04MTelephonic communication13%
G01NInvestigating or analysing materials by determining their chemical or physical properties10%
B66CCranes6%
G01VGeophysics6%
H01RElectrically-conductive connections6%
H04JMultiplex communication3%
H05GX-ray technique3%
PatentTitleYear
9,473,422'Multi-stage switching topology'20169,148,371'Configuring networks using balanced incomplete block designs'20157,668,158'Packet-switched telephony with circuit-switched backup'20107,616,646'Intraserver tag-switched distributed packet processing for network access servers'20097,606,245'Distributed packet processing architecture for network access servers'20097,493,411'Call control system and method for automatic routing of circuit switched data connections based upon stored communication link information'20097,116,707'Modem failover without call loss'20066,954,463'Distributed packet processing architecture for network access servers'20056,781,983'Packet-switched telephony with circuit-switched backup'20046,643,703'Method and apparatus for automatic routing of circuit switched data connections based upon stored behavioral information'20036,553,117'Programmable multiple-standard digital communications system'20036,529,959'Method and apparatus for automatic routing of circuit switched data connections based upon stored behavioral information'20036,522,151'Digital communication system accepting both balanced and unbalanced data signals and method for its use'20036,260,071'Method and apparatus for automatic routing of circuit switched data connections based upon stored behavorial information'20016,250,936'Single-port connection and circuitry accepting both balanced and unbalanced data signals'20015,838,759'Single beam photoneutron probe and X-ray imaging system for contraband detection and identification'19985,638,420'Straddle inspection system'19974,852,131'Computed tomography inspection of electronic devices'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1998Based in Los Altos Hills, CA, US· patent location history
1997–1998Patents assigned to ADVANCED RESEARCH AND APPLIC C (2)· patent assignee history
2001–2005Patents assigned to CISCO TECH IND (6)· patent assignee history
2001–2016Based in Los Altos, CA, US· patent location history
2003Patents assigned to CISCO TECHNOLOGY (2)· patent assignee history
2006–2010Patents assigned to CISCO TECH INC (5)· patent assignee history
2015–2016Patents assigned to GOOGLE INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CISCO TECH IND | 6 | 2001–2005 |
| CISCO TECH INC | 5 | 2006–2010 |
| ADVANCED RESEARCH AND APPLIC C | 2 | 1997–1998 |
| CISCO TECHNOLOGY | 2 | 2003 |
| GOOGLE INC | 2 | 2015–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Los Altos, California, US | 15 | 2001–2016 |
| Los Altos Hills, California, US | 3 | 1989–1998 |