Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7176255 | Method for producing aqueous polymer dispersions containing colorants | Klemens Mathauer, Arno Boehm, Walter Maechtle, Peter Rossmanith, Sabine Kielhorn-Bayer +11 more | 2007-02-13 |
| 5990327 | Use of aminotriarylmethanes for marking hydrocarbons and novel aminotriarylmethanes | Karin H. Beck | 1999-11-23 |
| 5750661 | Basic dyes based on amides of J-acid (1-hydroxy-6-aminonaphthalene-3-sulfonic acid) and amides of J-acid | Udo Mayer | 1998-05-12 |
| 5571898 | Basic dyes based on amides of j-acid (1-hydroxy-6-aminonaphthalene-3-sulfonic acid) and amides of j-acid | Udo Mayer | 1996-11-05 |
| 5354904 | Sulfonamides derived from 1-hydroxy-6-aminonaphthalene-3-sulfonic acid (J acid) | Udo Mayer | 1994-10-11 |
| 5214146 | Derivatives of quinolinecarboxylic acids | Gerhard Wagenblast | 1993-05-25 |
| 5144064 | Preparation of J-acid urea | Erwin Hahn, Udo Mayer, Friedrich-Wilhelm Raulfs | 1992-09-01 |