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Inventor

George E. Alexander

Inventor
Wallingford, PA, US

Overview

12→
Patents
1980–2018
Patent span
Electricity
Primary field (CPC H)

Patents· 12 as inventor

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

H02Hprimary
H02HEmergency protective circuit arrangements38%
G01RMeasuring electric variables19%
B29CShaping or joining of plastics10%
B29LIndexing scheme associated with subclass b29c, relating to particular articles10%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form10%
F23LSupplying air or non-combustible liquids or gases to combustion apparatus in general5%
F24FAir-conditioning5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
9,939,492Electric motor protection using a virtual speed switch20186,456,947'Digital current differential system'20026,311,307'Digital current differential system'20016,239,959'Ground distance relay for AC power transmission line protection'20015,809,045'Digital current differential system'19984,825,327'Negative and zero sequence directional overcurrent unit for AC power transmission line protection'19894,775,305'Windshield repair device'19884,753,695'Apparatus and a method for repairing a windshield'19884,686,601'Ground distance relay for AC power transmission line protection'19874,491,062'Adjustable slot diffuser'19854,420,788'Phase relay for AC power transmission line protection'19834,200,038'Chimney top assembly'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to AMERICAN STANDARD INC (1)· patent assignee history
1980Based in Fort Wayne, IN, US· patent location history
1983–2002Patents assigned to GEN ELECTRIC (7)· patent assignee history
1983–2018Based in Wallingford, PA, US· patent location history
1985Based in Madison, WI, US· patent location history
1988Patents assigned to ALEXANDER GEORGE E (2)· patent assignee history
1988Patents assigned to ALEXANDER VON L (2)· patent assignee history
1988Patents assigned to SPOO THOMAS R (2)· patent assignee history
1988Based in Bend, OR, US· patent location history
1998Based in Willingford, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GEN ELECTRIC71983–2002
ALEXANDER GEORGE Eself21988
ALEXANDER VON L21988
SPOO THOMAS R21988
AMERICAN STANDARD INC11980
Locations
LocationPatentsSpan
Wallingford, Pennsylvania, US71983–2018
Bend, OR, US21988
Willingford, Pennsylvania, US11998
Madison, WI, US11985
Fort Wayne, IN, US11980