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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Porcelain') ORDER BY date ASC, patent, type

Total of 10 patents found where: Category is 'Porcelain';

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T / S Patent Date Description Patentee Category Assigned To
 1922
U 1,409,953 March 21, 1922 Ceramic Insulating Material
Porcelain composition using Sillimanite for high electrical and mechanical strength and low coefficient of expansion, which is particularly suitable for spark plugs		 JEFFERY, Joseph A.
 Porcelain Jeffery-Dewitt Co.
 1926
U 1,572,730 February 9, 1926 Batch for Making Ceramic Material and to a Ceramic Material Made Therefrom
Porcelain composition for insulator using manganese		 LOCKE, Fred M.
LOCKE, Fred J.
 Porcelain  
 1927
U 1,631,729 June 7, 1927 Ceramic Insulating Material
Porcelain composition for spark plugs and insulators consisting of Sillimanite and a glassy matrix		 JEFFERY, Joseph A.
MONTGOMERY, Earle T.
 Porcelain Champion Porcelain Co.
U 1,631,730 June 7, 1927 Ceramic Material
Porcelain composition for spark plugs and insulators consisting of Sillimanite		 JEFFERY, Joseph A.
MONTGOMERY, Earle T.
 Porcelain Champion Porcelain Co.
U 1,633,462 June 21, 1927 Ceramic Insulating Material
Clay mixture to produce a black porcelain body.		 SORTWELL, Harold H.
 Porcelain Star Porcelain Co.
 1929
U 1,723,174 August 6, 1929 Use of Dumortierite
Porcelain composition use the mineral dumortierite which allows firing at a lower temperature		 JEFFERY, Joseph A.
RIDDLE, Frank H.
 Porcelain Champion Porcelain Co.
 1949
U 2,481,729 September 13, 1949 Porcelain Insulator Body
Porcelain clay body with an increased firing range		 DEWEY, Benjamin F.
 Porcelain Lapp Insulator Co., Inc.
 1963
U Specimen known 3,097,101 July 9, 1963 Ceramic Product and Method of Making the Same
Increases the mechanical and electrical strength of porcelain insulators by controlling the grain size of the flint used in the porcelain body and the glaze.		 LESTER, Ronald H.
 Porcelain General Electric Co.
 1982
U 4,332,913 June 1, 1982 Flux Combination of Barium Oxide and Potassium Feldspar for High Strength Alumina Porcelain Electric Insulators
Porcelain composition with low shrinkage during firing		 BOCK, Peter
 Porcelain Rosenthal Technik AG
 1984
U 4,465,900 August 14, 1984 High Voltage Glazed Porcelain Insulators
Porcelain insulator and glaze designed specifically for DC service		 SEIKE, Shoji
MITSUMATSU, Yoshio
 Porcelain NGK Insulators, Ltd.

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