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CANADIAN GYPSUM CO LTD

Overview
  • Total Patents
    313
About

CANADIAN GYPSUM CO LTD has a total of 313 patent applications. Its first patent ever was published in 1969. It filed its patents most often in Canada. Its main competitors in its focus markets materials and metallurgy, foods and drinks and environmental technology are HOFFMANN LASZLO, SELIVANSKY DROR and BST HOLDINGS PTY LTD.

Patent filings in countries

World map showing CANADIAN GYPSUM CO LTDs patent filings in countries
# Country Total Patents
#1 Canada 313

Patent filings per year

Chart showing CANADIAN GYPSUM CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nelsson Nels 23
#2 Camp Thomas P 15
#3 Dailey Manvel C 11
#4 Schuetz Clyde C 10
#5 Page John 10
#6 Gill Joseph W 9
#7 King George D 9
#8 Roos Carlisle K 8
#9 Vass Michael G 8
#10 Parsons Joseph R 8

Latest patents

Publication Filing date Title
CA1140846A Sag-resistant gypsum board and method
CA383756A Sheet metal expanding apparatus
CA543852A Ceiling runners and partition structure
CA341478A Floor topping mastic
CA665171A Rotary fastener
CA745785A Gypsum compositions and building structure
CA509899A Coatings for insulation board
CA358371A Refrigerator shelf
CA430246A Building tape applying device
CA357168A Gypsum plaster
CA772667A Plaster composition
CA414563A Reinforced ceramic material
CA400809A Ceiling construction
CA400230A Building clip
CA573307A Aqueous asphalt and paraffin wax emulsion
CA809568A Method and apparatus for feeding molten material to a rotor for forming glass fibers
CA783016A Method of making a stable electrically-conductive sheet and product thereof
CA481816A Plaster-receiving base
CA645475A Joint cement
CA907487A Predecorated gypsum board