|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '501') AND (category.subclass = '70') ORDER BY date ASC, patent, type|
Total of 4 patents found where: Class is '501'; Subclass is '70';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,143,885||June 22, 1915||Process for Making a Compound of Glass
Glass made from cullet with large amount of lime added for toughness
|BROOKFIELD, Henry M.
|U||1,886,280||November 1, 1932||Ultra Violet Ray Transmitting Glass and to a Batch and Method for Making the Same
Boro-silicate glass, method to make glass to transmit UV light
|LOCKE, Fred M.
LOCKE, Fred J.
|Boron||Corning Glass Works|
|U||2,157,100||May 9, 1939||Glazed Ceramic Insulator and the Like
Glaze - compression glaze
|ROWLAND, Davidge H.
||Glaze||Locke Insulator Corp.|
|U||4,782,199||November 1, 1988||Insulators Having Improved Steep Wave Front Characteristics
Suspension, head treated with special glaze to strengthen cap/cement
|Suspension||NGK Insulators, Ltd.|
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