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1969-11-27 |
1972-06-20 |
Pulp And Paper Research Institute Of Canada |
Bleaching of cellulosic pulp
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1970-12-21 |
1980-04-01 |
Scott Paper Company |
Kraft pulp bleaching and recovery process
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1975-08-14 |
1978-10-10 |
Westvaco Corporation |
Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
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1976-08-12 |
1978-03-07 |
Seisan Kaihatsu Kagaku Kenkyus |
Process for multistage pulp bleaching
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1977-09-26 |
1980-08-05 |
Weyerhaeuser Company |
Low-consistency ozone delignification
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1978-04-07 |
1983-10-18 |
International Paper Company |
Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
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1980-01-24 |
1981-08-11 |
Scott Paper Company |
Ozone effluent bleaching
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1987-09-17 |
1989-03-24 |
Degremont |
Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
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1989-02-15 |
1995-04-25 |
Union Camp Patent Holding, Inc. |
Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
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1990-10-26 |
1995-12-05 |
Union Camp Patent Holding, Inc. |
Reactor for bleaching high consistency pulp with ozone
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1989-02-15 |
1993-02-23 |
Union Camp Patent Holding, Inc. |
Process for high consistency oxygen delignification followed by ozone relignification
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1990-10-26 |
1993-01-26 |
Union Camp Patent Holdings, Inc. |
Reactor for bleaching high consistency pulp with ozone
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1989-02-15 |
1993-05-18 |
Union Camp Patent Holding, Inc. |
Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
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1989-12-22 |
1991-12-10 |
Schmidding Wilh Gmbh & Co |
Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
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1990-05-17 |
1992-11-17 |
Union Camp Patent Holding, Inc. |
Environmentally improved process for bleaching lignocellulosic materials with ozone
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1990-05-17 |
1995-08-15 |
Union Camp Patent Holding, Inc. |
Method for chelation of pulp prior to ozone delignification
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1990-05-17 |
1992-11-17 |
Union Camp Patent Holding, Inc. |
Environmentally improved process for bleaching lignocellulosic materials with ozone
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1990-10-26 |
1996-05-28 |
Union Camp Patent Holding, Inc. |
Apparatus for bleaching high consistency pulp with ozone
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1990-10-26 |
1992-12-29 |
Union Camp Patent Holdings, Inc. |
Method of bleaching high consistency pulp with ozone
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1991-05-24 |
1997-08-15 |
Union Camp Patent Holding |
Zweistufiger reaktor zum bleichen von zellstoff und verfahren zum bleichen mit ozon
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1993-10-01 |
1996-09-10 |
Union Camp Patent Holdings, Inc. |
Reduction of salt scale precipitation by control of process stream Ph and salt concentration
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2001-11-30 |
2003-07-17 |
Thomas Jaschinski |
Use of ozone for increasing the wet strength of paper and nonwoven
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