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NAT GYPSUM CO

Overview
  • Total Patents
    805
About

NAT GYPSUM CO has a total of 805 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering, machines and materials and metallurgy are KIPP MICHAEL D, KAISER GYPSUM COMPANY INC and ASHTECH IND LLC.

Patent filings per year

Chart showing NAT GYPSUM COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Menchetti Robert J 86
#2 Schneller Joseph W 56
#3 Burkard Edward A 32
#4 Winkowski Daniel A 30
#5 Venzie Frederick M 22
#6 Johnson Robert M 21
#7 Voisinet Walter E 20
#8 Dawdy Jack A 20
#9 Finkelstein Ronald S 19
#10 Kossuth Donald A 18

Latest patents

Publication Filing date Title
US6221151B1 Gypsum set accelerator and method of making the same
US6200380B1 Method for continuous production for wallboard tape joint compound
US5879446A Gypsum wallboard, and method of making same
US6187409B1 Cementitious panel with reinforced edges
US5858083A Cementitious gypsum-containing binders and compositions and materials made therefrom
US5740644A Wall with horizontal metal stud and reinforcement channel therefor
US5879825A Gypsum wallboard and method of making same
AU1000997A Cementitious gypsum-containing compositions and materials made therefrom
CA2192733A1 Cementitious gypsum-containing compositions and materials made therefore
CA2192724A1 Cementitious gypsum-containing fiber-containing compositions and materials made therefrom
CA2191910A1 Reusable Riser
US5718759A Cementitious gypsum-containing compositions and materials made therefrom
US6061995A Composite structural member and wall assembly method
US5685903A Cementitious gypsum-containing compositions and materials made therefrom
US5653797A Ready mixed setting-type joint compound and method of making same
CA2170558A1 Wall with horizontal metal stud and reinforcement channel therefor
CA2169101A1 Shaft Wall and Horizontal Metal Stud Therefor
US5722626A Reusable riser
US5575131A Multiple use corner clip
IL113888D0 Shaft wall and horizontal metal stud therefor