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

Total of 3 patents found where: Assigned To is 'Champion Porcelain Co.';

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T / S Patent Date Description Patentee Category Assigned To
 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.
 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.

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