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RITZERFELD WILHELM

Overview
  • Total Patents
    175
About

RITZERFELD WILHELM has a total of 175 patent applications. Its first patent ever was published in 1926. It filed its patents most often in Switzerland, Germany and Austria. Its main competitors in its focus markets textiles and paper, packaging and shipping and optics are WILHELM RITZERFELD, BLOCK & ANDERSON LTD and FRANK R FORD LTD.

Patent filings in countries

World map showing RITZERFELD WILHELMs patent filings in countries
# Country Total Patents
#1 Switzerland 69
#2 Germany 38
#3 Austria 25
#4 Spain 24
#5 Belgium 9
#6 Canada 8
#7 France 1
#8 United Kingdom 1

Patent filings per year

Chart showing RITZERFELD WILHELMs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ritzerfeld Wilhelm 84
#2 Wilhelm Ritzerfeld 67
#3 Ritzerfeld Gerhard 49
#4 Gerhard Ritzerfeld 45
#5 Fischer Heinrich 1

Latest patents

Publication Filing date Title
DE1164431B Device for feeding address printing cards stacked in a container to a printing drum
DE1149727B Device for feeding address printing cards stacked in a container to a printing drum provided with holding means
DE911977C Process for duplicating printing forms
ES162199A1 Procedure and device for copying texts or distinct text parts between you
ES162046A1 A procedure for the obtaining of clises in relief for multiplication
ES162047A1 Device for the obtaining of clises in relief for multiplication
ES162003A1 Devices to copy contaguos various points away from the original same
ES158416A1 Procedure and device for obtaining and copying reliable printed clysics
ES156577A1 Procedure of continuous manufacturing of hectographic paper
ES156483A1 Procedure for the multiplication of originals by entire pages, by lines or by sections
ES153286A1 Device to adject original specular writings in drum copy devices
ES153282A1 Rotary copier for the obtaining of copies with content in equal part and variable part
ES153053A1 Devices for multiplying by entire faces, by lines or by original sections copible and written to the lithographic mode
ES153046A1 Procedure and device for the transportation of original printed by entire faces by lines or by sections
ES140858A1 Accounting procedure.
ES139379A1 Device for the multiplication of accounting records by lines or sections and other similar records by means of reprinting.
ES138088A1 Multicopter apparatus.
ES124543A1 Procedure and device for the multiplication of writings, drawings or the like by repeated printing.
ES102490A1 Procedure and disposition to reproduce originals with copying specular writing on sheets.
CA538558A Rotary duplicating machines