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PROTOCOL ENG LTD

Overview
  • Total Patents
    42
About

PROTOCOL ENG LTD has a total of 42 patent applications. Its first patent ever was published in 1964. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets optics, machines and machine tools are AMADA AMERICA INC, AMADA MFG AMERICA and MORI NORIO.

Patent filings in countries

World map showing PROTOCOL ENG LTDs patent filings in countries

Patent filings per year

Chart showing PROTOCOL ENG LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Mayston Donald 15
#2 Elworthy John Henry 7
#3 Elworthy John H 4
#4 Mayston D 4
#5 Rapsey Colin 3
#6 Donarudo Maisuton 2
#7 Elworthy J H 2
#8 Elworthy J 2
#9 Elworthy Graham John 2
#10 John Henry Elworthy 1

Latest patents

Publication Filing date Title
GB8401545D0 Improvements in or relating to computer controlled tools for the production of graphic material for use in colour printing or like processes
GB8302229D0 Colour printing & c processes
GB8301710D0 Production of lines of separation in sheet & c member
DE3135442A1 METHOD FOR FIXING AT LEAST ONE FLEXIBLE PRINT PLATE IN A ROTARY PRESS PRESS OR THE LIKE
AU7270481A Lithographic printing plates
JPS5633650A Overlaying method using film punch and device therefor
GB2059627A Film punch registration
US4380946A Film punch registration
GB1536135A Drilling and punching machines for forming register holes in photographic film
GB1448478A Methods of and apparatus for edge-forming metallic plates
US3824828A Preparation of lithographic plates
GB1334043A Preparation of lithographic plates
GB1128207A Improvements in or relating to colour printing or like processes
CA828477A Graphic reproduction processes