Search the Insulator Patent Reference Library

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

Total of 3 patents found where: Category is 'Coating';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1867
U	61,390	January 22, 1867	Improved Compound for Telegraph Insulators, and for Other Purposes Heating earthenware insulators to 400-500 degrees and dipping into asphaltic compound that has been mixed with sulfur, silicic acid, and silicate of alumina to provide a hard, weather-resistant coating	BOYNTON, John F.	Coating
		1872
U	124,201	March 5, 1872	Improvement in Compounds for Insulating Telegraph Wires, etc. Coating mixture for his patented insulators	FARMER, Moses G.	Coating
		1890
U	437,685	October 7, 1890	Insulator Coating on exterior of insulator to color code line	GAYNOR, Thomas F.	Coating	The Gaynor Electric Co.

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