Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725889 | Phenolic stain-resists | — | 1998-03-10 |
| 5707949 | Prevention of dye-bleeding and transfer during laundering | Donald Douglas May | 1998-01-13 |
| 5708087 | Carboxylic acid-containing polymer/resole stain-resists | Engelbert Pechhold | 1998-01-13 |
| 5460891 | Substrates treated with bis(hydroxyphenyl)sulfone stain-resists | Engelbert Pechhold, Donald Douglas May | 1995-10-24 |
| 5447755 | Substrates treated with bis(hydroxyphenyl) sulfone stain-resists | Engelbert Pechhold, Donald Douglas May | 1995-09-05 |