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WEBSTER DAVID R

Overview
  • Total Patents
    21
About

WEBSTER DAVID R has a total of 21 patent applications. Its first patent ever was published in 1958. It filed its patents most often in Canada, United States and EPO (European Patent Office). Its main competitors in its focus markets textiles and paper, machines and civil engineering are SMURFIT CARTON Y PAPEL MEXICO, WATANABE KAZUMASA and PERM VNII TSELLYULOZNO BUMAZHN.

Patent filings in countries

World map showing WEBSTER DAVID Rs patent filings in countries
# Country Total Patents
#1 Canada 10
#2 United States 9
#3 EPO (European Patent Office) 2

Patent filings per year

Chart showing WEBSTER DAVID Rs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Webster David R 21

Latest patents

Publication Filing date Title
CA2262397A1 Method and apparatus for drying a moist web
US4826571A Roller-type presses including methods associated therewith
US4675079A Multi-nip suction press with a four roller closed train
CA1257799A Roller-type presses including methods associated therewith
CA1190710A Suspension bridge
US4535498A Suspension bridge
CA1180926A Pulp refining apparatus and methods
CA1161678A Multi-nip suction press
US3201305A Sheet forming method and apparatus
US3057402A Silent suction roll assembly
US3056719A Continuous web forming machine
US3016089A Cylindrical pressure headbox
US3009517A Pressure headbox construction
CA719078A Sheet forming method and apparatus
CA597574A Cylindrical pressure headbox
CA625923A Silent suction roll assembly
CA565496A Adjustable slice for a paper machine
CA614832A Stock inlet conduit for a paper machine