Patent information:
| Patent: | Utility 4,782,199 |
| Patented: | November 1, 1988 |
| Applied: | October 26, 1987 |
| Title: | Insulators Having Improved Steep Wave Front Characteristics |
| Description: | Suspension, head treated with special glaze to strengthen cap/cement |
| Category: | Suspension |
| Assigned to: | NGK Insulators, Ltd. |
Patentee Information:
| SEIKE, Shoji | ,, Japan |
| TOTOKI, Takao | ,, Japan |
| MIMA, Toshiyuki | ,, Japan |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 189 | INSULATORS; With terminal elements; Cap type; Plastic material adhered; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 182 | INSULATORS; With terminal elements; Plural; Cap and pin; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 209 | INSULATORS; Sectional, multi-part, composite, or coated; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 21 | CERAMIC COMPOSITIONS; Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions; Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients); Chemically specified frit compositions; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 70 | CERAMIC COMPOSITIONS; Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions; Silica containing; 40 percent - 90 percent by weight silica; And aluminum or iron compound; And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.); Calcium oxide containing; |
Known specimens:
| None known |
Drawings:
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