Learn more

KEELAVITE CO LTD

Overview
  • Total Patents
    169
About

KEELAVITE CO LTD has a total of 169 patent applications. Its first patent ever was published in 1935. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets mechanical elements, engines, pumps and turbines and control are NORBRO ENG LTD, YORK IND INC and JIANGSU JUNWEI POWER TECH CO LTD.

Patent filings in countries

World map showing KEELAVITE CO LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 49
#2 France 40
#3 United States 32
#4 Canada 16
#5 Denmark 12
#6 Germany 9
#7 Spain 6
#8 Ireland 3
#9 Belgium 1
#10 Switzerland 1

Patent filings per year

Chart showing KEELAVITE CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lee Norman 17
#2 Levetus Francis Benjamin 14
#3 Chittenden George Edward 12
#4 Benjamin Levetus Francis 8
#5 Harry Johnson Edward 7
#6 Edward Chittenden George 6
#7 Norman Lee 6
#8 Chittenden George E 5
#9 Levetus Francis B 4
#10 Johnson Edward Harry 4

Latest patents

Publication Filing date Title
GB909249A Hydraulic power transmission apparatus
US3084312A Relay apparatus
US3007452A Fluid operated reciprocating devices
GB880495A Pipe couplings
GB895748A Improvements relating to relay apparatus
ES246417A1 Improvements in manual pumps. (Machine-translation by Google Translate, not legally binding)
US2946193A Hydraulic motor systems
DE1165375B Hydrostatic transmission
ES246375A1 Improvements in hydraulic transmission systems (Machine-translation by Google Translate, not legally binding)
US2997093A Pumps
GB862348A Fluid-operated reciprocating devices
ES243990A3 Improvements introduced in the control of finished rotor tolerances (Machine-translation by Google Translate, not legally binding)
US2956551A Hydraulic control valve apparatus for controlling the supply of working fluid to a hydraulic circulating system
US3043535A Hydraulic drive for winding machines
US2945572A Hydraulic control of brakes
GB837656A Improvements relating to pumps
GB837998A Improvements relating to hydraulic motor systems
US2907450A Tensioning mechanism for endless webs
DE1201169B Tensioning device for an endless web, especially for the fourdrinier of a paper machine
GB835814A Hydraulic control valve apparatus