Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10274749 | Producing microstructured spectacle lenses by means of transfer layer | Stephan Trumm, Karl Huber, Ferdinand Schreder, Erich Koell, Reiner Beck +2 more | 2019-04-30 |
| 6933325 | High index curable photochromic composition and its process | Qiang Zheng, Donald S. Nelson, Jr., Charles William Carper, Jr., Manfred Melzig, Herbert Zinner | 2005-08-23 |
| 6171525 | Process for the production of a photochromic object | Erhard Effer, Manfred Melzig, Herbert Zinner | 2001-01-09 |
| 5498686 | Optically transparent photochromic plastic material | Erhard Effer, Manfred Melzig, Guiseppe Martinuzzi | 1996-03-12 |
| 4802071 | Lantern candy carrier | — | 1989-01-31 |
| 4748919 | Low nox multi-fuel burner | Edward J Campobenedetto, Stephen Allen Johnson | 1988-06-07 |
| 4680153 | Process for manufacturing highly porous mineralic bodies of polymorphic structure | Reiner Kinder, Johannes Teubel, Christine Fanslau | 1987-07-14 |
| 4544650 | Process for manufacturing hydrophobic adsorbents | Reiner Kinder, Johannes Teubel, Christine Fanslau | 1985-10-01 |
| 4409187 | Sealing agent and lubricant for medium-pressure and high-pressure autoclaves | Armin Kohler, Rudi Renner | 1983-10-11 |