Mixing cryolite, chiolite, and fluellite with sand and other common compounds for making glass in order to make a substance that looks similar to porcelain, but is actually glass that can be cast and formed like glass.
Compression glaze
| 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 = '72') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '501'; Subclass is '72';
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 |
| 1867 | ||||||
| U |
64,196 | April 30, 1867 | Improvement in the Manufacture of Porcelain Mixing cryolite, chiolite, and fluellite with sand and other common compounds for making glass in order to make a substance that looks similar to porcelain, but is actually glass that can be cast and formed like glass. |
CHEYNEY, Waldron J. |
Haley Insulator | |
| 1945 | ||||||
| U | 2,389,386 | November 20, 1945 | Glazed Ceramic Compression glaze |
RUSSELL, JR., Ralston |
Glaze | Westinghouse Electric Corp. |
Total of 0.00 seconds