TSL Group PLC

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Wallsendm, GB

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Patents Grantslast 30 patents

Information Patent Grant
Opaque quartz glass product and method of manufacture
- Patent number 5,985,779
- Issue date Nov 16, 1999
- TSL Group PLC
- Ian George Sayce
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Apparatus for manufacturing a vitreous silica article
- Patent number 5,735,928
- Issue date Apr 7, 1998
- TSL Group PLC
- Ian George Sayce
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Heat treatment facility for synthetic vitreous silica bodies
- Patent number 5,713,979
- Issue date Feb 3, 1998
- TSL Group PLC
- Robert Nicholson
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of enhancing fused quartz body purity
- Patent number 5,096,479
- Issue date Mar 17, 1992
- TSL Group PLC
- Joseph I. H. Allen
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of purifying molten silica
- Patent number 4,759,787
- Issue date Jul 26, 1988
- TSL Group PLC
- John A. Winterburn
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
76033737 - TSL
- Serial number 76033737
- Registration number 2593628
- Filing date Apr 14, 2000
- TSL Group PLC
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
75321287 - TSL
- Serial number 75321287
- Registration number 2339550
- Filing date Jul 8, 1997
- TSL Group PLC
- 17 - Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes