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DEMPSTER ROBERT & SONS LTD

Overview
  • Total Patents
    81
About

DEMPSTER ROBERT & SONS LTD has a total of 81 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United Kingdom, United States and France. Its main competitors in its focus markets basic materials chemistry, packaging and shipping and environmental technology are KURT BEUTHNER, SHANDONG HI LINK ELECTRICITY CO LTD and HIBY WALTHER.

Patent filings in countries

World map showing DEMPSTER ROBERT & SONS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 68
#2 United States 6
#3 France 3
#4 Austria 1
#5 Switzerland 1
#6 Germany 1
#7 Spain 1

Patent filings per year

Chart showing DEMPSTER ROBERT & SONS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Toogood Herbert John 4
#2 Morton Benjamin Cecil 1
#3 Ordish Francis Wessely 1
#4 Broadhead John Wilson 1
#5 David Beckett Moore 1
#6 Seymour Lavington Cook Patrick 1
#7 Brooke Reuben Mitchell 1
#8 Moore David Beckett 1
#9 Cook Patrick Seymour Lavington 1

Latest patents

Publication Filing date Title
ES231752A1 Procedure and apparatus for the separation of gas hydrogen sulfide (Machine-translation by Google Translate, not legally binding)
GB821048A A method of and means for extracting soluble substances from other materials
GB313020A Improvements relating to apparatus for handling and quenching coke
GB281001A Improvements in valves
GB248110A Apparatus for filling skips, or other receptacles
GB232012A Improvements in valves for controlling and reversing the flow of gas through purifiers, condensers and the like
GB231220A Apparatus for discharging and charging retorts or ovens
GB227213A Improvements in valves for controlling, reversing, and bye passing the flow of gas through purifiers, condensers and the like
GB211269A Improvements in valves for controlling, reversing and byepassing the flow of gas through purifiers, condensers and the like
GB208340A Improvements relating to wheels
GB204427A Improved means for securing trucks and the like in rotary tipplers
GB131409A Improvements in connection with the Distillation of Coal.
GB116068A Improvements in connection with Drains for Hydraulic Mains used in Coal Gas Manufacture.
GB118804A Improvements relating to Horizontal and Inclined Retort Settings.
GB116831A Improvements in connection with the Manufacture of Gas in Vertical Retorts.
GB115738A Improvements in the Construction of Vertical Retorts.
GB115936A Improvements in Valves for Controlling, Reversing and Bye-passing the Flow of Gas through Purifiers, Condensers and the like.
GB111036A Improvements in valves for Controlling, Reversing and Bye-passing the Flow of Gas through Scrubbers, Purifiers, Condensers and the like.
GB102535A Improvements in Feeding Shoots for Delivering Coal, Coke or other Materials to Conveyors and the like.
GB191501700A Improved Means for Screening Coke and other Materials.