Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855488 | Process for the preparation of dicyclopentenol esters | Hans Bellut | 1989-08-08 |
| 4571426 | Process for the production of maleic anhydride | Ferdinand von Praun | 1986-02-18 |
| 4562264 | Process for the recovery of five-membered ring dicarboxylic acid anhydrides | Ferdinand von Praun | 1985-12-31 |
| 4547578 | Process for removing naphthoquinone from phthalic anhydride produced through air oxidation of naphthalene | Herbert Haferkorn | 1985-10-15 |
| 4496710 | Process for the production of flat varnishes | Herbert Haferkorn, Heinz Riemer, Gunter Dormann | 1985-01-29 |
| 4316977 | Copolymer of maleic anhydride, dicyclopentadiene and vinylcyclohexene and its use as anionic paper surface sizing material | Herbert Haferkorn, Felix Schulde | 1982-02-23 |
| 4250291 | Melt adhesive based on polyamide from branched chain diamine | Siegfried Brandt | 1981-02-10 |
| 4248654 | Securing substrates together with melt adhesives based on polyamides | Siegfried Brandt | 1981-02-03 |