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TROTMAN WALTER KNOWLES

Overview
  • Total Patents
    13
About

TROTMAN WALTER KNOWLES has a total of 13 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United Kingdom, United States and Austria. Its main competitors in its focus markets textiles and paper and machine tools are VAAHTO OY, SHEEHAN WILLIAM E and VALMET KARLSTAD AKTIEBOLAG.

Patent filings in countries

World map showing TROTMAN WALTER KNOWLESs patent filings in countries
# Country Total Patents
#1 United Kingdom 5
#2 United States 3
#3 Austria 2
#4 Spain 2
#5 Switzerland 1

Patent filings per year

Chart showing TROTMAN WALTER KNOWLESs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Textiles and paper
#2 Machine tools

Focus technologies

# Technology
#1 Paper-making machines
#2 Mechanical paper working
#3 Presses

Top inventors

# Name Total Patents
#1 Trotman Walter Knowles 10
#2 Grout William Edward 1
#3 Walter Knowles Trotman 1

Latest patents

Publication Filing date Title
GB191417708A Improvements in and relating to Dandy Rolls, Cylinder Moulds and the like Paper-making Apparatus.
US984618A Apparatus for watermarking paper.
GB190720512A Improvements in or relating to Apparatus for Watermarking Paper.
US821206A Watermarking of paper.
GB190513184A Improvements in or relating to the Watermarking of Paper.
GB190328173A Improvements in or relating to Toys for Miniature Football or like Games.
US629937A Manufacture of paper.
GB189807906A Improvements in or relating to the Manufacture of Paper.