Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9751805 | Method for stabilizing beta-hemihydrate plaster | Winfried Aschern | 2017-09-05 |
| 8517594 | Apparatus for manufacturing set cellular cement | Michel Rigaudon, Steven Roy Butler, Eric Millamon | 2013-08-27 |
| 8119207 | Process and apparatus for manufacturing set cellular cement | Michel Rigaudon, Steven Roy Butler, Eric Millamon | 2012-02-21 |
| 7332114 | Process for manufacturing sound absorbing cement tile | Steven Roy Butler, Eric Millamon, Michel Rigaudon | 2008-02-19 |
| 5531946 | Process for the production of staff panels according to a semidry method and installation for implementing the process | — | 1996-07-02 |
| 5520779 | Process and apparatus for producing fiber-reinforced plaster plates | — | 1996-05-28 |
| 5477957 | Process for continuously forming a uniform layer of loose material and installation for carrying out the process | — | 1995-12-26 |
| 5472551 | Apparatus for producing plate-shaped bodies made of a mixture of plaster and fibrous materials | — | 1995-12-05 |
| 5368663 | Process for producing plate-shaped bodies made of a mixture of plaster and fibrous materials and installation for implementing | — | 1994-11-29 |
| 5248487 | Process for the conversion of calcium sulfate dihydrate into alpha-hemihydrate | Frank Fink, Jurgen Umlauf | 1993-09-28 |
| 5160411 | Installation for producing panel-shaped articles from a mixture of plaster and fibrous material | — | 1992-11-03 |
| 5051221 | Method for the manufacture of a moist mixture from plaster of Paris and fibres | — | 1991-09-24 |
| 4942003 | Method for continuously producing molded members from a mixture of gypsum and fibrous material | — | 1990-07-17 |
| 4917839 | Method for continuously producing molded members | — | 1990-04-17 |
| 4847022 | Method for continuously forming a uniform layer of material that is being dispersed | — | 1989-07-11 |
| 4214027 | Process for the production of fiber-containing plaster boards | Alfons Knuaf, Siegfried Franke | 1980-07-22 |