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CHANGEWOOD CORP

Overview
  • Total Patents
    29
About

CHANGEWOOD CORP has a total of 29 patent applications. Its first patent ever was published in 1953. It filed its patents most often in United States, Canada and Switzerland. Its main competitors in its focus markets machine tools, textiles and paper and machines are ROBERT ALENIUS NILS, TIMTEK LLC and SCHUBERT.

Patent filings in countries

World map showing CHANGEWOOD CORPs patent filings in countries
# Country Total Patents
#1 United States 20
#2 Canada 5
#3 Switzerland 1
#4 Germany 1
#5 France 1
#6 United Kingdom 1

Patent filings per year

Chart showing CHANGEWOOD CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Clark James D A 20
#2 Lambert Robert D 10
#3 Clark James D Argaville 2
#4 Reed Russell H 1

Latest patents

Publication Filing date Title
US2776688A Crosscut fiber and method for its preparation
US2776686A Crosscut fiber and method for its preparation
US2845662A Method and apparatus for depositing loose materials on support surfaces
GB785394A Improvements relating to the manufacture of structures produced by depositing fibrous elements
US2773790A Hard molded board
US2835622A Composite molded board and method of manufacture
US2895625A Storage and feed apparatus
US2749576A Apparatus and method for depositing fibrous elements in the manufacture of fibrous structures
US3067855A Mechanism for feeding fibrous elements
US2840865A Method and apparatus for depositing fibrous elements in the manufacture of fibrous structures
US2786005A Crosscut woody wafers and structures embodying same
US2849038A Machine for producing fibrous wafers
US2875797A Hydraulic molding press
US2931401A Trim saw apparatus
US2878728A Press feeding apparatus
US2949646A Method for forming fibrous structures
US2862291A Apparatus and method for separating pressed board from caul plates
US2863476A Apparatus for producing fibrous elements
US2770844A Method and means for felting fibrous elements
US2773789A Crosscut fiber and method for its preparation