Patent information:
| Patent: | Utility 2,157,100 |
| Patented: | May 9, 1939 |
| Applied: | December 20, 1938 |
| Title: | Glazed Ceramic Insulator and the Like |
| Description: | Glaze - compression glaze |
| Category: | Glaze |
| Assigned to: | Locke Insulator Corp. |
Patentee Information:
| ROWLAND, Davidge H. | Baltimore, MD |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 209 | INSULATORS; Sectional, multi-part, composite, or coated; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 26 | 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; Zinc containing; |
| 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; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 144 | CERAMIC COMPOSITIONS; Clay containing (e.g., porcelain, earthenware, etc.); And flint or feldspar; Kaolin (e.g., ball clay, fire clay, etc.) containing; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |