Learn more

TWIN CITY INT INC

Overview
  • Total Patents
    22
About

TWIN CITY INT INC has a total of 22 patent applications. Its first patent ever was published in 1980. It filed its patents most often in Germany, United States and United Kingdom. Its main competitors in its focus markets measurement are TERRA ETABLISSEMENT, JNE AB and KNUETTEL ALEXANDER.

Patent filings in countries

World map showing TWIN CITY INT INCs patent filings in countries
# Country Total Patents
#1 Germany 10
#2 United States 10
#3 United Kingdom 2

Patent filings per year

Chart showing TWIN CITY INT INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement

Top inventors

# Name Total Patents
#1 Spongr Jerry J 20
#2 Sawyer Byron E 12
#3 Joffe Boris B 10
#4 Tiebor John E 8
#5 Ivasyuk Boris N 4
#6 Raffelsberger Peter W 2
#7 Stanton William B 2
#8 Holler James A 2
#9 Dalfonso Ralph J 1
#10 Sprongr Jerry J 1

Latest patents

Publication Filing date Title
DE4021388A1 Workpiece coating strength measurer using X=ray fluorescence - projects X=ray beam by X=ray tube, shutter, collimator and mirror mounted in frame
US4962518A Apparatus for measuring the thickness of a coating
DE3522779A1 Thickness measuring instrument with a stationary specimen observing mirror
US4656357A Apparatus for measuring coating thickness
US4434366A Apparatus for measuring coating thickness
US4423328A Measuring system for use in the radiation measurement of layer thicknesses and the like
US4451732A Apparatus for measuring thickness of coating on continuously moving material
US4467198A Radiation shielding arrangement for coating thickness measurement device
US4441022A Coating thickness measuring device
US4424445A Portable coating thickness measuring device
US4383172A Method and apparatus for measuring coating thicknesses on continuously moving material
US4317997A Positioning fixture for measuring instruments