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FLETCHER DAVID E

Overview
  • Total Patents
    26
  • GoodIP Patent Rank
    69,258
  • Filing trend
    ⇩ 100.0%
About

FLETCHER DAVID E has a total of 26 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1990. It filed its patents most often in United States, United Kingdom and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets engines, pumps and turbines, environmental technology and mechanical elements are HAMPTON KEITH, FLETCHER DAVID and BorgWarner Esslingen GmbH.

Patent filings in countries

World map showing FLETCHER DAVID Es patent filings in countries

Patent filings per year

Chart showing FLETCHER DAVID Es patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Fletcher David E 25
#2 Graichen Brian M 22
#3 Hampton Keith 21
#4 Miller James H 15
#5 Gilmer Matthew C 9
#6 Niedert Andrew D 6
#7 Bravo Rex 4
#8 Vashuk Denis 2
#9 Gilmer Matt 2
#10 Niedert Andrew 1

Latest patents

Publication Filing date Title
US2016356250A1 Check valves and Venturi devices having the same
US2016265557A1 Vacuum producing device having a suction passageway and a discharge passageway entering through the same wall
US9599234B1 Sprung gate valve
US2017037983A1 Magnetically actuated shut-off valve
US9382826B1 Noise attenuating member for noise attenuating units in engines
US2016061164A1 Vacuum producer including an aspirator and an ejector
US2016040688A1 Pneumatically actuated vacuum pump having multiple venturi gaps and check valves
WO03010088A1 Production of hydrogen and carbon from natural gas or methane using barrier discharge non-thermal plasma
GB9000439D0 Game apparatus