Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8268250 | Proton acceptance type sensor, hydrogen gas sensor and acid sensor | — | 2012-09-18 |
| 7416601 | Black perylene pigments | Peter Erk, Andreas Stohr, Arno Boehm, Walter Kurtz, Benno Sens | 2008-08-26 |
| 7105046 | Black perylene pigment and process for producing the same | Nobuya Shimo | 2006-09-12 |
| 7083675 | Black perylene-based pigment and process for producing the same | Nobuya Shimo | 2006-08-01 |
| 6245403 | Writable and erasable high-density optical storage media | Heinz Spahni, Beat Schmidhalter, Annemarie Wolleb, Jean-Luc Budry, Gerald Giller | 2001-06-12 |
| 5973146 | Process for the preparation of aminated diketobis (aryl or heteroaryl)pyrrolopyrroles and the use thereof as photoconductive substances | Alain C. Rochat, Olof Wallquist, Abul Iqbal | 1999-10-26 |
| 5808094 | Preparation of mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Zhimin Hao, Olof Wallquist, Abul Iqbal | 1998-09-15 |
| 5725651 | Mono-N-alkyl-quinacridone pigments | John S. Zambounis | 1998-03-10 |
| 5693824 | Preparation of mixed crystals and solid solutions of 1, 4-diketo-pyrrolpyrroles | Zhimin Hao, Olof Wallquist, Abul Iqbal | 1997-12-02 |
| 5500314 | Material for storing information | Gerald Giller | 1996-03-19 |
| 5472815 | Process for storing information and a material having information written thereon | Gerald Giller, Alain C. Rochat | 1995-12-05 |
| 5382485 | Process for storing information | Gerald Giller | 1995-01-17 |
| 5352551 | Process for storing information with high storage density | Alain C. Rochat, Gerald Giller | 1994-10-04 |
| 5316852 | Coated material and the use thereof | Gerald Giller, Alain C. Rochat | 1994-05-31 |
| 5298063 | Novel electrochromic compositions based on diketopyrrolopyrroles | Alain C. Rochat | 1994-03-29 |
| 5229507 | Substituted naphthalocyanines and their use | Marcus Baumann, Hanspeter Stricker, Walter Fischer, Jurgen Vogt | 1993-07-20 |
| 5169953 | Electrochromic compositions based on diketopyrrolopyrroles | Alain C. Rochat | 1992-12-08 |
| 5144333 | Process for the storage of information in an organic recording layer | Alain C. Rochat | 1992-09-01 |
| 5098810 | Electrophotographic photoreceptors | Seiji Homma, Hiroshi Yamamoto, Takashi Deno | 1992-03-24 |
| 4981765 | Thermal transfer printer for producing a photomask | — | 1991-01-01 |
| 4760004 | Thioquinacridones and isothioquinacridones, preparation and use thereof | Alain C. Rochat, Edward E. Jaffe | 1988-07-26 |
| 4760151 | Dithioketo pyrrolopyrroles | Alain C. Rochat, Abul Iqbal, Remy Jeanneret | 1988-07-26 |
| 4632893 | Electrophotographic recording material containing selected dithioke topyrrolopyrroles | Alain C. Rochat, Abul Iqbal, Remy Jeanneret | 1986-12-30 |
| 4482447 | Nonaqueous suspension for electrophoretic deposition of powders | Koichiro Sumi, Tsuneo Muchi, Shinichi Soyama | 1984-11-13 |