Patent information:
| Patent: | Utility 2,155,835 |
| Patented: | April 25, 1939 |
| Applied: | December 24, 1936 |
| Title: | Ceramic Insulating Material |
| Description: | Improved ceramic composition using titanium oxide that will fire at typical kiln temperatures |
| Category: | Ceramic Composition |
| Assigned to: | The Ohio Brass Co. |
Patentee Information:
Class and subclass information:
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 134 | CERAMIC COMPOSITIONS; Titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.); |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | DIG25 | Metallic oxide; |
| Class: | 361 | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
| Subclass: | 321.5 | ELECTROSTATIC CAPACITORS; Fixed capacitor; Solid dielectric; Ceramic, glass, or oxide particles; Composition; |
| Class: | 516 | COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF |
| Subclass: | 88 | |
| Class: | 516 | COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF |
| Subclass: | 139 | |
Known specimens:
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