Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11897984 | Tagging agents, anti-scalant polymer compositions, and methods | Vesa Nuutinen, Erkki Johannes METSÄLÄ, Vesa Vuori, Mehrdad Hesampour | 2024-02-13 |
| 11225456 | Process for the preparation of a mixture of chelating agents, mixture of chelating agents and methods of using them | Jonas Konn, Anna-Maija PERANDER, Anna Haarala, Riitta Ilmoniemi, Hanna Hoffren | 2022-01-18 |
| 9090536 | Process for the preparation of a mixture of chelating agents | Jussi Rissanen | 2015-07-28 |
| 9061276 | Catalyst recovery process | Jussi Rissanen | 2015-06-23 |
| 9034977 | Polymer product and the use of the same as dispersing agent | Rosa Carceller, Ari Juppo | 2015-05-19 |
| 8828910 | Process for the preparation of peroxy acids | Ilkka Renvall | 2014-09-09 |
| 8066846 | Composition and process for the treatment of fibre material | Aarto Paren, Jukka Jakara, Jukka Rautiainen, Ilkka Renvall, Anna Ilomäki +4 more | 2011-11-29 |
| 6946061 | Regeneration of a working solution in a hydrogen peroxide production process | Juhani Paloniemi | 2005-09-20 |
| 6749727 | Hydrogenation of a working solution in a hydrogen peroxide production process | Juhani Paloniemi | 2004-06-15 |
| 6590120 | Methods for the preparation of an N-bis-[2-(1,2-dicarboxy-ethoxy)-ethyl]amine derivative and products of the methods and their uses | Ilkka Renvall, Aarto Paren | 2003-07-08 |
| 6331192 | Bleaching of chemical pulp and treatment with a chelating agent | Jukka Jakara, Aarto Paren, Ilkka Renvall | 2001-12-18 |
| 6264790 | Process for the peracid bleaching of chelated chemical pulp | Jukka Jakara, Aarto Paren, Ilkka Renvall | 2001-07-24 |
| 6093849 | N-bis- or N-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine derivatives and preparation and use of the same | Ilkka Renvall, Arto Paren | 2000-07-25 |
| 6049002 | Method for the preparation of aqueous solutions containing performic acid as well as their use | Tapio Mattila | 2000-04-11 |
| 5114701 | Method for producing hydrogen peroxide and solvent system for use in the hydrogen peroxide production process | Elias Suokas | 1992-05-19 |