Patent information:
| Patent: | Utility 61,390 |
| Patented: | January 22, 1867 |
| Applied: | |
| Title: | Improved Compound for Telegraph Insulators, and for Other Purposes |
| Description: | 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 |
| Category: | Coating |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 106 | COMPOSITIONS: COATING OR PLASTIC |
| Subclass: | 660 | COATING OR PLASTIC COMPOSITIONS; Inorganic settable ingredient containing; Wax containing (e.g., petroleum wax, beeswax, montan wax, carnauba wax, spermaceti, etc.); |
| Class: | 106 | COMPOSITIONS: COATING OR PLASTIC |
| Subclass: | 274 | COATING OR PLASTIC COMPOSITIONS; Bituminous material or tarry residue; With sulfurizing or sulfonating agent; |
| Class: | 106 | COMPOSITIONS: COATING OR PLASTIC |
| Subclass: | 668 | COATING OR PLASTIC COMPOSITIONS; Inorganic settable ingredient containing; Bituminous material or tarry residue, pitch, or coal containing; |
| Class: | 106 | COMPOSITIONS: COATING OR PLASTIC |
| Subclass: | 815 | COATING OR PLASTIC COMPOSITIONS; Inorganic settable ingredient containing; Boron, sulfur, or halogen containing (e.g., alum, etc.); |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 140 | CERAMIC COMPOSITIONS; Elemental sulfur containing; |
Known specimens:
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