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LESTER ENGINEERING CO

Overview
  • Total Patents
    94
About

LESTER ENGINEERING CO has a total of 94 patent applications. Its first patent ever was published in 1935. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets machines, materials and metallurgy and engines, pumps and turbines are TOYO MACHINERY & METAL, HPM CORP and BUILD A MOLD LTD.

Patent filings in countries

World map showing LESTER ENGINEERING COs patent filings in countries
# Country Total Patents
#1 United States 45
#2 United Kingdom 23
#3 Canada 20
#4 Germany 6

Patent filings per year

Chart showing LESTER ENGINEERING COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nathan Lester 30
#2 Schwartz William H 20
#3 Lester Nathan 17
#4 Henry Schwartz William 5
#5 Schwartz William Henry 4
#6 Lester Thomas J 4
#7 Lester William M 2
#8 Ansorge Al 1
#9 Weiss Adrian E 1
#10 Auken H B Van 1

Latest patents

Publication Filing date Title
US4356940A Apparatus for dispensing measured amounts of molten metal
GB1294588A Improvements in or relating to injection moulding machines
US3640662A Injection molding machine with high-frequency dielectric heater
US3606640A Injection molding apparatus
US3650654A Injection molding machine
US3588957A Injection molding machine
US3579741A Machine and clamp force control system therefor
GB1171376A Improvements in or relating to Injection Moulding Machines
US3335464A Injection molding machine
US3335461A Reciprocating screw injection molding machine
GB708201A Improvements in or relating to injection molding machines
US2696641A Injection cylinder for molding machines
US2656576A Die casting machine
GB673054A Improved method and apparatus for injection moulding, pressure casting or transfer moulding
GB673120A Improved method and apparatus for injection moulding, pressure casting or transfer moulding
US2671246A Mold overload compensator
US2671247A Mold overload compensator
GB652526A Injection molding apparatus
GB654891A Improvements in or relating to injection moulding machines for plastic material
GB631641A Improvements in or relating to pressure casting machines