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POLYCHROME CORP

Overview
  • Total Patents
    649
About

POLYCHROME CORP has a total of 649 patent applications. Its first patent ever was published in 1946. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets optics, textiles and paper and machines are ALGRAPHY LTD, MACDERMID GRAPHIC ARTS INC and POLYFIBRON TECHNOLOGIES INC.

Patent filings per year

Chart showing POLYCHROME CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Golda Eugene 76
#2 Rowe William 51
#3 Shimazu Ken-Ichi 41
#4 Huang Jen-Chi 34
#5 Chu Simon L 30
#6 Wilkes Alan 30
#7 Golda E 22
#8 Gumbinner Robert 19
#9 Deutsch Albert S 18
#10 Shelnut James 18

Latest patents

Publication Filing date Title
EP0574450A1 Device for continuous electrodeless electrochemical treating of an electrically conductive web in an electrolyte cell and its use
US5021324A Printing plate protectant
AU6342590A Improved persistent photoconductive coating composition
EP0371723A2 Photocurable compositions and methods
EP0372778A1 Photoinitiator
US4960663A Persistent photoconductive coating composition
GB8820781D0 Process & apparatus for producing printing plates
US4882261A High contrast dot enhancing compositions and photographic products and methods for their use
US4868075A Electrophotographic imaging process
US4822861A Method for the preparation of polyvinyl phosphonic acid
AU7656987A Improved radiation sensitive acrylate composition
CA1304532C Radiation sensitive acrylate composition
US4721552A Two-step method for electrolytically graining lithographic metal plates
US4735696A Method of electrolytically graining aluminum metal sheets suitable for lithographic plate supports
US4758497A Photosensitive naphthoquinone diazide sulfonyl ester compounds for the fabrication of lithographic plates and photosensitive sheet construction with the compounds
US4721665A Method for neutralizing acidic novolak resin in a lithographic coating composition
US4640884A Photosensitive compounds and lithographic composition or plate therewith having o-quinone diazide sulfonyl ester group
US4576892A Photosensitive materials
US4568628A Water developable diazo printing plate composition with quaternary nitrogen stabilizer
US4548683A Method of electrolytically graining a lithographic plate