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Inventor

John R. Emmett

Inventor
Hampton, GB

Overview

4→
Patents
1982–2002
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Nprimary
H04NPictorial communication, e.g. television40%
B22DCasting of metals20%
H02JElectric power networks20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
6,407,769'Measurement of timing delay between associated signals or bitstreams'20025,243,424'Apparatus and method for the measurement of tuning delay between a video signal and an audio signal'19934,385,269'Battery charger'19834,341,261'Method of casting elongated members of reactive metals and reactive metal alloys'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Patents assigned to CANADIAN PATENTS DEV (1)· patent assignee history
1982Based in Ottawa, CA· patent location history
1983–1993Patents assigned to THAMES TELEVISION (2)· patent assignee history
1983Patents assigned to REDIFON TELECOMM (1)· patent assignee history
1983–2002Based in Hampton, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
THAMES TELEVISION21983–1993
CANADIAN PATENTS DEV11982
REDIFON TELECOMM11983
Locations
LocationPatentsSpan
Hampton, GB31983–2002
Ottawa, CA11982