Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889896 | Process for the imidization of copolymers of maleic anhydride with vinyl-aromatic monomers | Luciano Canova, Umberto Giannini, Italo Borghi, Antonio Alfonso Proto | 1989-12-26 |
| 4855272 | Process for preparing solid components for catalysts, or precursors of such components, in the form of microspheroidal particles, suitable for the preparation of ethylene polymers | — | 1989-08-08 |
| 4808397 | Process for preparing fine particles of metal oxides | Emiliano M. Ceresa, Luciano Zaninetta | 1989-02-28 |
| 4804798 | Process for the polymerization of alpha-olefins or of their mixtures with minor amounts of ethylene, by means of catalysts comprising solid components or precursors and such components, in the form of microspheroidal particles | — | 1989-02-14 |