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Class Information
Number:
501/130
Name:
Compositions: ceramic
>
Ceramic compositions
>
Refractory
>
Trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing
>
Aluminum compound (e.g., clay, aluminium oxide, etc.)
>
And silicon compound other than clay
> And clay containing
Description:
Subject matter comprising clay.
Sub-classes under this class:
Class Number
Class Name
Patents
501/131
Less than 40 percent by weight clay
38
Patents under this class:
1
2
Patent Number
Title Of Patent
Date Issued
4104075
Refractories, batch for making the same and method for making the same
Aug. 1, 1978
4072531
Plugging compositions for blast furnace tap holes
Feb. 7, 1978
3941872
Method for producing calcined clay pigments
Mar. 2, 1976
1
2
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