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INGENIOUS DEVICES LTD

Overview
  • Total Patents
    11
About

INGENIOUS DEVICES LTD has a total of 11 patent applications. Its first patent ever was published in 1970. It filed its patents most often in Canada, United States and Australia. Its main competitors in its focus markets machine tools, machines and engines, pumps and turbines are WINSLOW PRODUCT ENGINEERING CO, MIDWEST SUPPLY AND MFG COMPANY and MICRO OPTICS DESIGN CORP.

Patent filings in countries

World map showing INGENIOUS DEVICES LTDs patent filings in countries
# Country Total Patents
#1 Canada 4
#2 United States 2
#3 Australia 1
#4 Germany 1
#5 Denmark 1
#6 United Kingdom 1
#7 Italy 1

Patent filings per year

Chart showing INGENIOUS DEVICES LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Parnham Ray G 4
#2 Willemsen Bernardus A 4
#3 Parry John 3
#4 Willemsen B A 2
#5 Parnham R G 2
#6 Parry J 1

Latest patents

Publication Filing date Title
IT8025866D0 Centre-less grinder for valves
DE3041722A1 Centre-less grinder for valves - has parallel base rollers with control roller moved vertically with variable axis
DK460280A Appliances for grinding valves
US4428160A Centerless valve grinding
CA1114171A Centreless valve grinding
CA951547A Apparatus for providing oil grooves in valve guides
US3700343A Apparatus for providing oil grooves in valve guides
CA947059A Apparatus for providing oil grooves in valve guides
CA937030A Device for replacing and regrinding valve seats