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Patent applications and USPTO patent grants for Knackstedt; Wilhelm.The latest application filed is for "process for the production of composite safety glass".
Patent | Date |
---|---|
Process for the production of composite safety glass Grant 4,952,460 - Beckmann , et al. August 28, 1 | 1990-08-28 |
Plasticizer-containing films of partially acetalized polyvinyl alcohols Grant 4,361,625 - Beckmann , et al. November 30, 1 | 1982-11-30 |
Process of the production of composite safety glass Grant 4,303,739 - Beckmann , et al. December 1, 1 | 1981-12-01 |
Process for the production of modified, partially acetalized polyvinyl alcohol films Grant 4,144,376 - Beckmann , et al. March 13, 1 | 1979-03-13 |
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