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Inventor

Charles J. Walker

Inventor
Trevor, WI, US

Overview

2→
Patents
1990–1999
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.

H01Hprimary
H01HElectric switches20%
H02HEmergency protective circuit arrangements20%
H03FAmplifiers20%
H03KPulse technique20%
H10DInorganic electric semiconductor devices20%
PatentTitleYear
5,949,121'Temperature-indicating field effect transistor'19994,918,564'Load driver with delayed turn-off'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1999Patents assigned to MOTOROLA INC (2)· patent assignee history
1990Based in Round Lake Beach, IL, US· patent location history
1999Based in Trevor, WI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MOTOROLA INC21990–1999
Locations
LocationPatentsSpan
Trevor, WI, US11999
Round Lake Beach, Illinois, US11990