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Inventor

Stephen P. Geishecker

Inventor
East Walpole, MA, US

Overview

4→
Patents
1976–1997
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.

H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters29%
H01CResistors14%
H01HElectric switches14%
H01TSpark gaps14%
H02HEmergency protective circuit arrangements14%
H05BElectric heating14%
PatentTitleYear
5,617,001'A.C. motor starting control circuit utilizing triggerable semiconductor switching device'19975,561,582'Failsafe device for use with electrical surge suppressor'19964,990,830'Current sensing relay'19913,955,170'Solid state switch'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1997Patents assigned to TEXAS INSTRUMENTS INC (4)· patent assignee history
1976Based in Wrentham, MA, US· patent location history
1991–1997Based in East Walpole, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TEXAS INSTRUMENTS INC41976–1997
Locations
LocationPatentsSpan
East Walpole, Massachusetts, US31991–1997
Wrentham, Massachusetts, US11976