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COLUMBIA CELLULOSE COMPANY LTD

Overview
  • Total Patents
    11
About

COLUMBIA CELLULOSE COMPANY LTD has a total of 11 patent applications. Its first patent ever was published in 1954. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets textiles and paper, macromolecular chemistry and polymers and biotechnology are SAPPI LTD, CHEMIPULP PROCESS INC and MAUTNER ISIDOR.

Patent filings in countries

World map showing COLUMBIA CELLULOSE COMPANY LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 5
#2 United States 5
#3 Canada 1

Patent filings per year

Chart showing COLUMBIA CELLULOSE COMPANY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Morris Wayman 4
#2 Martin Mervin E 1
#3 Kraske William A 1
#4 Desmond O'Meara 1
#5 Holkestad Helge P 1
#6 Wilson Jack W 1
#7 Taylor R Perry 1
#8 Abson Derek 1
#9 Harris Gordon R 1
#10 George Graf 1

Latest patents

Publication Filing date Title
US3067086A Pulping process
US3067107A Propionic acid fermentation
GB815247A Bleaching woob pulps
US2939813A Pulping of lignocellulosic material
US2882965A High viscosity, high percentage alpha cellulose from sulfite pulp
US2825646A Reducing the ash content of cellulose
GB758158A Improvements in the purification of wood pulp
GB754782A Improvements in the bleaching of cellulose pulps
CA881512A Production of cellulose esters