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ROLF THELEN

Overview
  • Total Patents
    12
About

ROLF THELEN has a total of 12 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States. Its main competitors in its focus markets chemical engineering and control are LEISSER JOSEF, TIANJIN CITY XINZE FINE CHEMICAL CO LTD and ALTENTECH POWER INC.

Patent filings in countries

World map showing ROLF THELENs patent filings in countries
# Country Total Patents
#1 United States 12

Patent filings per year

Chart showing ROLF THELENs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Chemical engineering
#2 Control

Top inventors

# Name Total Patents
#1 Rolf Thelen 12

Latest patents

Publication Filing date Title
US2001001A Reversible circulation internal fan kiln
US1541444A Reversible-circulation internal fan kiln
US1543344A Reversible-circulation internal-fan kiln
US1541443A Reversible circulation internal fan kiln
US1541294A Reversible circulation internal-fan kiln
US1591577A Drying apparatus
US1539817A Reversible circulation internal fan kiln
US1543459A Reversible-circulation internal fan kiln
US1536735A Reversible circulation internal fan kiln
US1509849A Reversible-circulation internal-fan kiln
US1499627A Reversible-circulation internal-fan kiln
US1413073A Thermostat