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WALKER CHARLES W E

Overview
  • Total Patents
    12
About

WALKER CHARLES W E has a total of 12 patent applications. Its first patent ever was published in 1967. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets measurement and computer technology are M & C TECHGROUP GERMANY GMBH, KINGSBURY TECHNOLOGY INC and EDDYFI NDT INC.

Patent filings in countries

World map showing WALKER CHARLES W Es patent filings in countries
# Country Total Patents
#1 United States 6
#2 Canada 5
#3 United Kingdom 1

Patent filings per year

Chart showing WALKER CHARLES W Es patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Walker Charles W E 12

Latest patents

Publication Filing date Title
CA2216037A1 Portable microwave moisture measurement instrument using two microwave signals of different frequency and phase shift determination
US4962384A Microwave antenna apparatus
CA1292774C Microwave moisture measurement using two microwave signals of different frequency and phase shift determination
US4727311A Microwave moisture measurement using two microwave signals of different frequency and phase shift determination
US4475080A Microwave moisture measurement of moving particulate layer after thickness leveling
CA996189A Microwave window and antenna apparatus for moisture measurement of fluidized material
US3639834A Microwave moisture measurement apparatus having movable mirror scanning means
US3693079A Apparatus for measuring percent moisture content of particulate material using microwaves and penetrating radiation
US3534260A Method and apparatus for measuring moisture content in sheet materials using a frequency modulation free microwave energy beam
CA839937A Method and apparatus for measuring moisture content in sheet materials