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Patent applications and USPTO patent grants for Rieke; Johannes C..The latest application filed is for "biodegradable polymer substrates loaded with active substance suitable for the controlled release of the active substance by means of a membrane".
Patent | Date |
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Biodegradable polymer substrates loaded with active substance suitable for the controlled release of the active substance by means of a membrane Grant 4,965,128 - Greidanus , et al. October 23, 1 | 1990-10-23 |
Method for manufacturing a filter of electrically charged electret fiber material and electret filters obtained according to said method Grant RE31,285 - van Turnhout , et al. June 21, 1 | 1983-06-21 |
Method for manufacturing a filter of electrically charged electret fiber material and electret filters obtained according to said method Grant 4,178,157 - van Turnhout , et al. December 11, 1 | 1979-12-11 |
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