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DOUGLAS WILLIAM HENRY

Overview
  • Total Patents
    13
About

DOUGLAS WILLIAM HENRY has a total of 13 patent applications. Its first patent ever was published in 1881. It filed its patents most often in United Kingdom, Switzerland and Spain. Its main competitors in its focus markets measurement are VAUCHER MFT FLEURIER SA, MANUF LA JOUX PERRET SA and SOCIÉTÉ ANONYME DE LA MANUFACTURE D HORLOGERIE AUDEMARS PIGUET & CIE.

Patent filings in countries

World map showing DOUGLAS WILLIAM HENRYs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 Switzerland 3
#3 Spain 2

Patent filings per year

Chart showing DOUGLAS WILLIAM HENRYs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement

Focus technologies

# Technology
#1 Mechanically-driven clocks
#2 Time-interval measuring

Top inventors

# Name Total Patents
#1 Douglas William Henry 8
#2 Douglas William-Henry 2
#3 Collett John 1
#4 William Henry Douglas 1

Latest patents

Publication Filing date Title
GB191029232A Improvements in Centre Second Watches.
GB190711955A Improvements relating to Epicyclic Driving Mechanism.
GB190606858A Improvements relating to Watches.
GB190113773A Improvements in or relating to Venetian Blinds.
GB189624593A Improvements in Venetian Blinds.
GB189614976A Improvements in and relating to Driving Chains for Cycles.
GB189518443A An Improvement in Lens Measurers.
GB189410716A Improvements in Rings and such like Articles of Jewellery.