Issued Patents All Time
Showing 25 most recent of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8144923 | Watermarking encoded content | Jian Zhao | 2012-03-27 |
| 7383441 | Method and device for confirming the authenticity of a document and a safe for storing data | Jan C. Vorbrüggen, Wolfgang Kubbilun, Ingo A. Kubbilun, Hans Joachim Bickenbach, Marcus Belke | 2008-06-03 |
| 6359985 | Procedure for marking binary coded data sets | Jian Zhao | 2002-03-19 |
| 6243480 | Digital authentication with analog documents | Jian Zhao | 2001-06-05 |
| 6141753 | Secure distribution of digital representations | Jian Zhao, Makoto Saito | 2000-10-31 |
| 5631333 | Blends based on copolyarylene ether sulfones | Martin Weber, Gerhard Leiter, J urgen Streib | 1997-05-20 |
| 5612425 | Molding compositions based on modified polyaryl ethers | Martin Weber, Klaus Muehlbach | 1997-03-18 |
| 5298595 | Partly aromatic copolyamides of reduced triamine content | Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta | 1994-03-29 |
| 5252661 | Impact modifying rubber and partly aromatic copolyamides | Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta, Gerd Blinne +2 more | 1993-10-12 |
| 5230955 | Plastic sheet or plate with flameproofing means | Otto Diroll, Klaus Hofmann, Uwe Jacobsen, Hans Lorenz, Gunther Schreyer +4 more | 1993-07-27 |
| 5218082 | Partly aromatic copolyamide of reduced triamine content | Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta | 1993-06-08 |
| 5202371 | Free-flowing rubber granules | Walter Goetz, Herbert Gutsche, Richard Pflueger | 1993-04-13 |
| 5081222 | Partly aromatic copolyamide of reduced triamine content | Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta | 1992-01-14 |
| 5071924 | Thermoplastic molding materials based on polyamide blends | Gerhard Heinz, Walter Goetz, Gunter Pipper | 1991-12-10 |
| 5051491 | Process for the preparation of a linear polyamide having ether bridges in the polymer chain | Gunter Pipper | 1991-09-24 |
| 5038867 | Fire protection of cargo spaces | Holger Hindrichs, Heiko Trey | 1991-08-13 |
| 5039786 | Continuous preparation of copolyamides from caprolactam and salt of diamine and dicarboxylic acid | Gunter Pipper, Claus Cordes, Franz Schmidt, Horst Reimann | 1991-08-13 |
| 5034450 | Thermoplastic molding materials based on polyamides and polyester elastomers | Walter Betz, Christoph Plachetta, Gerd Blinne, Gunter Pipper | 1991-07-23 |
| 5030709 | Continuous preparation of copolyamides | Gunter Pipper | 1991-07-09 |
| 5015681 | Flameproof thermoplastic molding materials based on polyamides and polyester elastomers | Peter Steiert, Walter Betz, Christoph Plachetta | 1991-05-14 |
| 4994550 | Process for the continuous preparation of nylon 4,6 from aqueous salt solution | Gunter Pipper | 1991-02-19 |
| 4970255 | Flameproof thermoplastic molding materials based on partly aromatic amide copolymers | Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta, Gerd Blinne +2 more | 1990-11-13 |
| 4866115 | Solid mixture of nucleated and nonnucleated polyamides | Walter Betz, Christoph Plachetta, Gerd Blinne, Karl Hahn | 1989-09-12 |
| 4557648 | Latching cargo in aircraft | Gunter Vogg, Jochen Soller | 1985-12-10 |
| 4484846 | Actuation of a cargo restrainer | Hinrich Engel | 1984-11-27 |