Roy Porter

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Manchester, GB

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Patents Grantslast 30 patents

Information Patent Grant
Thermal transfer printing
- Patent number 5,234,887
- Issue date Aug 10, 1993
- Imperial Chemical Industries PLC
- Peter Gregory
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Thermal transfer printing with z-alkyl-phenoxy anthraquinone dye mi...
- Patent number 4,725,284
- Issue date Feb 16, 1988
- Imperial Chemical Industries PLC
- William Black
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Stabilized aqueous dyestuff dispersions
- Patent number 4,270,917
- Issue date Jun 2, 1981
- Imperial Chemical Industries Limited
- Terence E. Heald
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...