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PERKINS F LTD

Overview
  • Total Patents
    55
About

PERKINS F LTD has a total of 55 patent applications. Its first patent ever was published in 1931. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets engines, pumps and turbines, environmental technology and mechanical elements are HERCULES MOTORS CORP, SCALZO AUTOMOTIVE RES PTY LTD and KRISTANI FILIP.

Patent filings in countries

World map showing PERKINS F LTDs patent filings in countries

Patent filings per year

Chart showing PERKINS F LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chapman Charles Wallace 4
#2 Wallace Chapman Charles 3
#3 Sparrow Alan W 2
#4 Page Peter James 1
#5 Baker Archibald John Stephen 1
#6 Gil Joseph Valderrame 1
#7 Glamann Wilhelm 1
#8 Pannikkar Mathoor Sankaran Ram 1
#9 Hayward William J 1
#10 James Swallow William 1

Latest patents

Publication Filing date Title
US3213710A Vehicle transmission
GB974436A Improvements relating to rotary units of the trochoidal casing type
US3127883A Spring starter motor
SU131285A1 Combustion chamber for compression ignition engines
GB963583A Improvements in or relating to controlling arrangements for internal combustion engines
ES251064A1 Improvements in or relating to drive units with internal combustion engine supercharged by mechanically engine-driven compressor
US3040589A Variable speed power transmissions
ES246816A1 Improvements in internal combustión engines (Machine-translation by Google Translate, not legally binding)
GB873364A Improvements in or relating to rotary oil pumps
GB904339A Improvements in or relating to combustion chambers of compression ignition internal combustion engines
GB906693A Improvements in or relating to variable speed power transmissions
GB831390A Improvements in or relating to chain tensioner devices
US2717317A Engine turning mechanism
GB797041A Improvements in or relating to release mechanisms
GB722725A Improvements in or relating to speed governors for compression ignition engines
GB725361A Improvements in or relating to release mechanisms
GB742729A Improvements in or relating to internal combustion engines
GB729951A Improvements in or relating to controlling apparatus for automatically stopping internal combustion engines or actuating a signal device therefor
GB707939A Improvements in or relating to engine turning mechanisms
GB708857A Improvements in or relating to control arrangements for connecting an electric generator to an existing electric main