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PHOTO ENGRAVERS RES INC

Overview
  • Total Patents
    23
About

PHOTO ENGRAVERS RES INC has a total of 23 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets surface technology and coating, textiles and paper and audio-visual technology are PROTECTOR AS, HONSHU SHIKOKU BRIDGE EXPRESSWAY CO LTD and ROBOTRON ZENTRUM F FORSCHUNG U.

Patent filings in countries

World map showing PHOTO ENGRAVERS RES INCs patent filings in countries
# Country Total Patents
#1 United States 10
#2 Germany 5
#3 United Kingdom 5
#4 Denmark 2
#5 France 1

Patent filings per year

Chart showing PHOTO ENGRAVERS RES INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Borth Paul F 5
#2 Vaughn Henry C 3
#3 Borth Paul Frederick 3
#4 Bradley James William 2
#5 Daugherty Phillip M 2
#6 Bradley James W 2
#7 Elston Lewis William 2
#8 Elston Lewis W 2
#9 Rogers Marvin Carson 2
#10 Daugtherty Phillip M 1

Latest patents

Publication Filing date Title
US3340195A Process of etching
GB985077A Powderless etching
US3287191A Etching of printed circuit components
US3271282A Process for etching photoengraving copper
US3144368A Powderless etching
US3136670A Powderless etching
US3161552A Composition and process for powderless etching
US3148100A Composition and process for powderless etching
US3033793A Powderless etching of copper photoengraving plates
US3033725A Powderless etching of copper plate
US2746848A Etching