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Patent applications and USPTO patent grants for Knobel; Walter.The latest application filed is for "composition and method for improving the fastness of direct and reactive dyeings on cellulose-containing substrates".
Patent | Date |
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Composition and method for improving the fastness of direct and reactive dyeings on cellulose-containing substrates Grant 4,443,223 - Kissling , et al. April 17, 1 | 1984-04-17 |
Reaction products useful for improving the wetfastness of direct and reactive dyes on cellulosic substrates Grant 4,410,652 - Robinson , et al. October 18, 1 | 1983-10-18 |
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