Mark A. Helle

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Hope, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Dye compositions for polyamides
- Patent number 5,456,727
- Issue date Oct 10, 1995
- Hoechst Celanese Corporation
- Walter Heimling
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
High temperature process for preparing fiber reactive dyes
- Patent number 5,350,838
- Issue date Sep 27, 1994
- Hoechst Celanese Corporation
- Mark A. Helle
- C07 - ORGANIC CHEMISTRY