Patent information:
| Patent: | Utility 1,633,462 |
| Patented: | June 21, 1927 |
| Applied: | February 27, 1924 |
| Title: | Ceramic Insulating Material |
| Description: | Clay mixture to produce a black porcelain body. |
| Category: | Porcelain |
| Assigned to: | Star Porcelain Co. |
Patentee Information:
Class and subclass information:
| 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:
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