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DOLL RESEARCH

Overview
  • Total Patents
    35
About

DOLL RESEARCH has a total of 35 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets medical technology and measurement are HEALTHUP SP Z O O, CHA UN JONG and PRONK TECHNOLOGIES INC.

Patent filings per year

Chart showing DOLL RESEARCHs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Doll H G 10
#2 Broner H J 10
#3 Doll Henri Georges 5
#4 Broner Hans J 5
#5 Doll Henri G 4
#6 Broner H 2
#7 Doll H 2
#8 Broner Hans Joachim 2
#9 Broner Gans Ioakhim 1
#10 Doll Henry Georges 1

Latest patents

Publication Filing date Title
DK195380A Electromagnetic blood flow meter
US4134396A Method and apparatus for developing intermittent venous blood flow and measuring total blood flow
US4205688A Method and apparatus for developing and measuring pulsed blood flow
CA1018605A Non-invasive electromagnetic bloodflow measuring system with rejection of noises
US4036215A Apparatus and method for eliminating perturbations of a kinetic origin in the blood flow waveform
US3994285A Revolving symmetrical magnet assembly and improved method of blood flow detection
US3809070A Non-invasive electromagnetic bloodflow measuring system with rejection of noises
US3759247A Electromagnetic flowmeter
US3659591A Electromagnetic flowmeter