Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671518 | Methods for producing a mineral wool needle-felt and a mineral wool product using a thixotropic additive | Hans Kummermehr, Lothar Bihy | 1997-09-30 |
| 5057173 | Process for the production of needle felt from rock wool | Lothar Bihy, Hans Kummermehr | 1991-10-15 |
| 4866905 | Method of installing a mineral fibre material provided in roll form, a mineral fibre strip suitable for carrying out the method and a method of producing the mineral fibre strip | Lothar Bihy, Jürgen Royar, Frank Ruechel | 1989-09-19 |