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Inventor

Steven Welk

Inventor
Lansdale, PA, US

Overview

5→
Patents
1978–2006
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H02Hprimary
H02HEmergency protective circuit arrangements29%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition14%
G02BOptical elements, systems or apparatus14%
H01CResistors14%
H01HElectric switches14%
H04NPictorial communication, e.g. television14%
PatentTitleYear
7,106,375'Mutual display support for a digital information/imaging system'20064,360,853'Capacitor voltage and trip coil impedance sensor with high voltage isolation'19824,343,242'Laser-triggered chemical actuator for high voltage isolation'19824,263,635'Method and apparatus for sensing the clearance of fault current on an ac transmission line'19814,129,849'Fault current limiting resistor'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to ELECTRIC POWER RES INST (1)· patent assignee history
1978–1982Based in Lansdale, PA, US· patent location history
1981Patents assigned to WELK STEVEN (1)· patent assignee history
1982Patents assigned to BROWN BOVERI ELECTRIC INC (1)· patent assignee history
1982Patents assigned to GOULD INC (1)· patent assignee history
2006Patents assigned to EASTMAN KODAK CO (1)· patent assignee history
2006Based in Penfield, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BROWN BOVERI ELECTRIC INC11982
EASTMAN KODAK CO12006
ELECTRIC POWER RES INST11978
GOULD INC11982
WELK STEVENself11981
Locations
LocationPatentsSpan
Lansdale, Pennsylvania, US41978–1982
Penfield, New York, US12006