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RENE DUFOUR

Overview
  • Total Patents
    15
About

RENE DUFOUR has a total of 15 patent applications. Its first patent ever was published in 1927. It filed its patents most often in Germany, United States and United Kingdom. Its main competitors in its focus markets machines, electrical machinery and energy and macromolecular chemistry and polymers are HYMAN INT LTD, SCHNALLINGER HELFRIED and RELIABLE TOY CO LTD.

Patent filings in countries

World map showing RENE DUFOURs patent filings in countries
# Country Total Patents
#1 Germany 6
#2 United States 6
#3 United Kingdom 3

Patent filings per year

Chart showing RENE DUFOURs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Rene Dufour 6
#2 Auguste Leduc Henri 3
#3 Dufour Rene 1
#4 Leduc Henri Auguste 1

Latest patents

Publication Filing date Title
US2303341A Method and apparatus for heating and vulcanizing rubber and similar matter
US2261847A Method for heating and vulcanizing rubber and similar matter
US2070475A Spark gap apparatus
GB453991A Electric spark gap
US2280771A Method of baking or vulcanizing india-rubber or similar materials
GB275611A Improvements in or relating to high frequency electric induction furnaces
US1805469A Electric furnace
GB272495A Spark-gap oscillation producing apparatus especially suitable for electric high frequency furnaces
US1735161A Method and apparatus for producing spark discharges