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Inventor

John P. Ernst

Inventor
Warrenville, IL, US

Overview

2→
Patents
1989–2014
Patent span
Electricity
Primary field (CPC H)

Patents· 2 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 communication33%
H04MTelephonic communication33%
H04QSelecting33%
PatentTitleYear
8,681,960'Extending originating capabilities of a subscriber to devices in any telephony network'20144,873,717'Call coverage arrangement'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to AMERICAN TELEPHONE & TELEGRAPH (1)· patent assignee history
1989–2014Based in Warrenville, IL, US· patent location history
2014Patents assigned to 8631654 CANADA INC (1)· patent assignee history
2014Patents assigned to AMPORT CARL W (1)· patent assignee history
2014Patents assigned to DIENER JON R (1)· patent assignee history
2014Patents assigned to ERNST JOHN P (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
8631654 CANADA INC12014
AMERICAN TELEPHONE & TELEGRAPH11989
AMPORT CARL W12014
DIENER JON R12014
ERNST JOHN Pself12014
Locations
LocationPatentsSpan
Warrenville, Illinois, US21989–2014