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CROMPTON PARKINSON LTD

Overview
  • Total Patents
    171
About

CROMPTON PARKINSON LTD has a total of 171 patent applications. Its first patent ever was published in 1928. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets machine tools, electrical machinery and energy and measurement are FRONIUS INTERNEHSHNL GMBKH, NAG SYSTEM CO LTD and HUBIS.

Patent filings in countries

World map showing CROMPTON PARKINSON LTDs patent filings in countries

Patent filings per year

Chart showing CROMPTON PARKINSON LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stokes John Gordon 5
#2 Laurie Donald James Neville 5
#3 Rule William 5
#4 Reed Harold Leslie 4
#5 Sills Frederick Arthur 4
#6 Sills Frederick A 3
#7 Ainsworth Arthur Ratcliffe 3
#8 Smith Francis David 3
#9 Paul Freedman 3
#10 Arthur Sills Frederick 2

Latest patents

Publication Filing date Title
US4324754A Method of inserting a powder in the manufacture of electrical dry cells
GB2025688A Manufacture of electrical dry cells
US4140968A Damping of electrical measuring instruments
GB1527792A Arc welding control circuit
GB1514481A Manufacture of welding studs
GB1447503A Electric cells and batteries
AU3873672A Electric storage batteries
GB1381265A Electric storage batteries
US3684959A Moving coil electrical measuring instruments
GB1212245A Improvements relating to electrical measuring instruments
GB1124667A Improvements relating to electrical measuring instruments
GB1120630A Improvements relating to the angular control of shafts
GB1118001A Improvements relating to cooling apparatus
GB1075969A Improvements relating to electric arc stud welding
US3363084A Apparatus and method for producing a bead-free weld of a metal stud
GB1013877A Improvements relating to electric motors
GB1044157A Improvements relating to electric arc stud welding
US3210900A Composite structure
GB968007A Improvements relating to electric arc stud welding
GB957240A Improvements relating to plug-in pinions