| 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 = '524') ORDER BY date ASC, patent, type |
Total of 8 patents found where: Class is '524';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1851 | ||||||
U  |
8,075 | May 6, 1851 | Improvement in the Manufacture of India Rubber Rubber - vulcanizing process for hard rubber for insulator |
GOODYEAR, Nelson |
Rubber | |
| 1881 | ||||||
| U | 243,782 | July 5, 1881 | Compound Substance for Electric Insulators Composition for hard rubber for insulators |
MAYALL, Thomas J. |
Composition | |
| 1887 | ||||||
| U | 362,076 | May 3, 1887 | Composition for Insulating and Other Purposes Composition formula of Gilsonite |
GILSON, Samuel H. |
Composition | 1/2 to George Goss, Sr. |
| 1922 | ||||||
| U | 1,409,091 | March 7, 1922 | Cement Cement composition |
GODDARD, Walter T. |
Cement | Locke Insulator Corp. |
| 1939 | ||||||
| U | 2,146,596 | February 7, 1939 | Rubber Insulating Compound and Method of Making the Same Rubber compound for electrical conductors |
SCHWARTZ, Emil W. SAVAGE, Manuel H. SPARGO, Francis C. |
Rubber | General Electric Co. |
| U | 2,146,597 | February 7, 1939 | Process of Treating Rubber Rubber treating process |
SCHWARTZ, Emil W. CROASDALE, Evan T. |
Rubber | General Electric Co. |
| 1959 | ||||||
| U | 2,879,323 | March 24, 1959 | Electrical Insulating Cement Cement made from synthetic resin to bond metal to porcelain |
NICHOLS, Frank S. SMITH, JR., Sidney R. |
Cement | General Electric Co. |
| 1988 | ||||||
| U | 4,749,824 | June 7, 1988 | High Voltage Insulators Polymer suspension made of silicon elastomer |
ORBECK, Tor |
Polymer | Dow Corning Corp. |
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