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Inventor

Charles W. Berk

Inventor
St. Joseph, MI, US

Overview

4→
Patents
1976–1994
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties29%
H05BElectric heating29%
F27BFurnaces, kilns, ovens or retorts in general14%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace14%
G01KMeasuring temperature14%
PatentTitleYear
5,322,360'Isothermal calorimeter'19944,056,677'Electrode system for resistance furnace'19774,019,017'Arc control circuit'19773,936,587'Electrode construction for resistance heating furnace'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1994Patents assigned to LECO CORP (4)· patent assignee history
1976–1994Based in St. Joseph, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LECO CORP41976–1994
Locations
LocationPatentsSpan
St. Joseph, MI, US41976–1994