Patent information:
| Patent: | Utility 1,128,747 |
| Patented: | February 16, 1915 |
| Applied: | February 24, 1913 |
| Title: | Method of Manufacturing Porcelain Insulators |
| Description: | Manufacturing process for porcelain insulator firing unglazed, then filling porous porcelain with oxidizable oil and rendering the oil stable with ozone to form a coating to replace expense of firing on a glaze |
| Category: | Manufacturing |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 141 | CERAMIC COMPOSITIONS; Clay containing (e.g., porcelain, earthenware, etc.); |
| Class: | 123 | INTERNAL-COMBUSTION ENGINES |
| Subclass: | 169P | |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 209 | INSULATORS; Sectional, multi-part, composite, or coated; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | DIG54 | Processes in making insulators; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 337 | WITH POST-TREATMENT OF COATING OR COATING MATERIAL; Chemical agent applied to treat coating; |
Known specimens:
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