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Inventor

Frederick Caldwell Livermore

Inventor
Stittsville, CA

Overview

31→
Patents
1978–2015
Patent span
Physics
Primary field (CPC G)

Patents· 31 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary
G06FElectric digital data processing21%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
H04LTransmission of digital information, e.g. telegraphic communication7%
H04JMultiplex communication5%
H04MTelephonic communication5%
H04QSelecting5%
B41JTypewriters4%
H02HEmergency protective circuit arrangements4%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices1%
PatentTitleYear
9,129,019'Associative search engine'20159,110,991'Associative search engine'20159,009,150'Associative search engine'20158,977,614'Associative search engine'20158,706,713'Associative search engine'20148,645,351'Associative search engine'20148,631,036'Associative search engine'20148,589,377'Associative search engine'20138,442,968'Associative search engine'20137,945,553'Associative search engine'20117,933,883'Associative search engine'20117,895,178'Associative search engine'20117,895,183'Associative search engine'20117,672,970'Associative search engine'20107,469,245'Associative search engine'20087,236,969'Associative search engine'20076,542,511'Programmable transport and network architecture'20036,339,488'Large scale communications network having a fully meshed optical core transport network'20026,098,065'Associative search engine'20005,991,292'Network access in multi-service environment'19995,828,666'Access to telecommunications networks in multi-service environment'19985,802,043'Transport architecture and network elements'19985,610,910'Access to telecommunications networks in multi-service environment'19975,015,600'Method for making integrated circuits'19914,709,296'Protection arrangement for a telephone subscriber line interface circuit'19874,625,255'Interactive overvoltage protection device'19864,544,983'Overvoltage protection device'19854,393,433'Overvoltage protector for telephone lines'19834,217,480'Thermal print bar'19804,099,046'Thermal printing device'19784,074,109'Thermal print bar'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1998Patents assigned to NORTHERN TELECOM LTD (11)· patent assignee history
1978–1980Based in Kanata, CA· patent location history
1983–2015Based in Stittsville, CA· patent location history
1997Based in Sittsville, CA· patent location history
1999–2011Patents assigned to NORTEL NETWORKS CORP (5)· patent assignee history
2002–2011Patents assigned to NORTEL NETWORKS LTD (6)· patent assignee history
2014–2015Patents assigned to ROCKSTAR CONSORTIUM US LP (6)· patent assignee history
2015Patents assigned to RPX CLEARINGHOUSE LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NORTHERN TELECOM LTD111978–1998
NORTEL NETWORKS LTD62002–2011
ROCKSTAR CONSORTIUM US LP62014–2015
NORTEL NETWORKS CORP51999–2011
RPX CLEARINGHOUSE LLC22015
Locations
LocationPatentsSpan
Stittsville, CA271983–2015
Kanata, CA31978–1980
Sittsville, CA11997