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WATSON WADDELL LTD

Overview
  • Total Patents
    12
About

WATSON WADDELL LTD has a total of 12 patent applications. Its first patent ever was published in 1927. It filed its patents most often in Canada, France and United States. Its main competitors in its focus markets textiles and paper and chemical engineering are FIBRE LAB PTY LTD, WOOL CLEANING TECH LTD and ELISEE CHARLES DUHAMEL.

Patent filings in countries

World map showing WATSON WADDELL LTDs patent filings in countries
# Country Total Patents
#1 Canada 4
#2 France 4
#3 United States 4

Patent filings per year

Chart showing WATSON WADDELL LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Textiles and paper
#2 Chemical engineering

Top inventors

# Name Total Patents
#1 Waddell Martin 4
#2 Martin Waddell 4
#3 Watson Henry Cowan 4
#4 Cowan Watson Henry 4

Latest patents

Publication Filing date Title
US1795529A Spool for treating yarn or rove with liquids
US1795530A Machine for thrashing and scutching flax
US1795528A Process of producing fiber and yarn from unretted flax plants
US1708812A Treating or retting fiber-bearing plants
CA298086A Device for treating flax for spinning
CA298085A Apparatus for treating flax for spinning
CA296054A Retting of fibre bearing plants
CA298084A Process of producing fibre and yarn from unretted flax plants