Osakeyhtio; A. Ahlstrom

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Patents Grantslast 30 patents

Information Patent Grant
Bioreactor
- Patent number 4,514,297
- Issue date Apr 30, 1985
- Osakeyhtio; A. Ahlstrom
- Johan R. Enqvist
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Extended nip press with movable sealing strips
- Patent number 4,492,611
- Issue date Jan 8, 1985
- Osakeyhtio; A. Ahlstrom
- Paul O. Meinander
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Circular saw blade
- Patent number 4,240,315
- Issue date Dec 23, 1980
- Osakeyhtio; A. Ahlstrom
- Jorma Tuomaala
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for recovering chemicals from the waste liquors of sulfate...
- Patent number 4,093,508
- Issue date Jun 6, 1978
- Osakeyhtio; A. Ahlstrom
- Kaj Olof Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Delignification and bleaching of wood pulp with oxygen in the prese...
- Patent number 3,951,732
- Issue date Apr 20, 1976
- Osakeyhtio; A. Ahlstrom
- Eero Vilhelm Sjostrom
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE