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R AND J DEMPSTER LTD

Overview
  • Total Patents
    15
About

R AND J DEMPSTER LTD has a total of 15 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United Kingdom. Its main competitors in its focus markets mechanical elements, chemical engineering and basic materials chemistry are WILLIAM BLAKELEY, AUG KLONNE and ERNST CHUR.

Patent filings in countries

World map showing R AND J DEMPSTER LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 15

Patent filings per year

Chart showing R AND J DEMPSTER LTDs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB568828A Improvements in gas washing apparatus of the livesey type
GB545172A Improved washing means for use in gas manufacture or like purposes
GB537676A Improved washing means for use in gas manufacture or like purposes
GB537454A Improved means for preventing ice-formation in water-borne gasholders
GB493193A An improved hydraulic multi-way valve
GB488473A Improvements relating to the construction of gasholders
GB480239A Improvements relating to the construction of gasholder lifts
GB465031A Improvements relating to the mounting and securing of gasholder guide-roller carriages
GB382578A Improvements relating to valves for controlling the direction of flow of gas throughgas purifiers
GB190639A Improvements in connection with the guide rollers of spirally guided gasholders
GB176232A Improvements relating to telescopic gasholders
GB153540A Improvements in or relating to means employed in the discharging of vertical or inclined retorts or chambers
GB191115856A Improved Supporting Device for use in Horizontal Rotary Scrubber-washers or the like Employed for the Purification of Gas.
GB190903985A Improvements in Rotary Blowers or Exhausters.
GB190900235A Improvements relating to Gasholder Tank Attachments.