John Peter Hugh Williamson

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Chester, EN

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Patents Grantslast 30 patents

Information Patent Grant
Production of refractory articles
- Patent number 4,053,320
- Issue date Oct 11, 1977
- Keeling & Walker Limited
- John Peter Hugh Williamson
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Production of calcined ceramic pigments
- Patent number 4,047,970
- Issue date Sep 13, 1977
- Keeling and Walker, Limited
- Harry Augustus Morriss
- C01 - INORGANIC CHEMISTRY