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1973-05-30 |
1977-07-26 |
Ahlstroem Oy |
Method and apparatus for bleaching cellulose pulp with molecular weight.
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1974-02-18 |
1978-05-16 |
Toyo Pulp Company, Ltd. |
Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
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1974-05-16 |
1986-06-23 |
Mannbro Systems Handelsbolag |
SEE CONTINUOUS ALKALIC DELIGNIFICATION OF LIGNOCELLULOSAMENTAL MATERIAL IN TWO OR MULTIPLE STEPS, WHICH ARE LAST WITH Oxygen
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1974-11-06 |
1976-04-20 |
International Paper Company |
Delignification and bleaching of wood pulp with oxygen
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1975-10-10 |
1977-01-11 |
International Paper Company |
Oxygen-alkali delignification of low consistency wood pulp
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1976-12-01 |
1979-06-07 |
New Zealand Dev Finance |
Treating lignocellulosic or cellulosic pulp
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1977-09-26 |
1980-08-05 |
Weyerhaeuser Company |
Low-consistency ozone delignification
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1977-10-12 |
1980-04-15 |
Airco, Inc. |
Oxygen delignification of wood pulp
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1978-10-23 |
1980-06-24 |
International Paper Company |
Process for removing residual oxygen from oxygen-bleached pulp
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1978-12-18 |
1981-03-31 |
Kamyr Inc. |
Plural stage mixing and thickening oxygen bleaching process
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1979-06-15 |
1981-10-20 |
Weyerhaeuser Company |
Treating pulp with oxygen
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1979-06-15 |
1981-10-20 |
Weyerhaeuser Company |
Method and apparatus for treating pulp with oxygen
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1979-06-15 |
1981-10-20 |
Weyerhaeuser Company |
Method and apparatus for treating pulp with oxygen and storing the treated pulp
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1980-03-21 |
1981-10-13 |
International Paper Company |
Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
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1980-08-26 |
1981-11-16 |
Kamyr Ab |
PROCEDURE FOR CHEMICAL REGULATION IN THE TREATMENT OF A SUBSTANCE, SPECIAL MASS, WITH GAS
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1981-04-06 |
1983-05-24 |
The Black Clawson Company |
Method and apparatus for oxygen delignification
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1981-09-04 |
1987-12-09 |
Weyerhaeuser Company |
Method and apparatus for mixing pulp with gases
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1981-09-04 |
1984-01-09 |
Weyerhaeuser Co |
Method of treating pulp with plural oxygen stages.
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1982-02-27 |
1983-06-09 |
Degussa Ag, 6000 Frankfurt |
Process for the production of semi-bleached cellulose
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1984-03-29 |
1987-08-04 |
Weyerhaeuser Company |
Oxygen reactor deaeration tank and system
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1984-06-15 |
1986-08-29 |
Centre Tech Ind Papier |
PROCESS FOR BLEACHING MECHANICAL PASTE WITH HYDROGEN PEROXIDE
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1984-11-08 |
1988-05-18 |
Rauma Repola Oy |
Procedure for controlling oxygen bleaching process
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1984-12-03 |
1999-03-02 |
Int Paper Co |
Multi-stage bleaching process including an enhanced oxidative extraction stage
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1985-04-01 |
1990-08-02 |
Weyerhaeuser Co |
VENTILATION CONTAINER AND DEVICE FOR USE THEREOF.
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1985-05-03 |
1989-12-12 |
Kamyr, Inc. |
Method and apparatus for mixing oxygen gas with medium consistency pulp in a pump discharge
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1987-02-24 |
1990-12-18 |
Westvaco Corporation |
Production of high strength linerboard with oxygen and alkali
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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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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 |
1992-02-04 |
Union Camp Patent Holding, Inc. |
Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
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1989-02-15 |
1993-06-08 |
Union Camp Patent Holdings Inc. |
Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
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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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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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1991-01-03 |
1992-12-22 |
Union Camp Patent Holding, Inc. |
Process for enhanced oxygen delignification using high consistency and a split alkali addition
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1989-02-15 |
1996-06-11 |
Union Camp Patent Holding, Inc. |
Process for high consistency delignification using a low consistency alkali pretreatment
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1989-05-10 |
1993-06-30 |
Ahlstroem Oy |
Foerfarande Foer blekning av cellulosamassa med Otson
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1989-06-30 |
1991-01-10 |
Nekoosa Papers, Inc. |
A method for bleaching kraft pulp with a mixture of oxygen and peroxide
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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 |
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 |
1997-12-11 |
Union Camp Patent Holding, Inc., Wilmington, Del. |
Two-stage pulp bleaching reactor and method for bleaching with ozone
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1992-02-24 |
1997-03-11 |
Charles W. Hankins |
Integrated pulping process of waste paper yielding tissue-grade paper fibers
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1993-01-28 |
1995-02-07 |
The Mead Corporation |
Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
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1993-04-29 |
2002-01-22 |
Lewis Donald Shackford |
Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release
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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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2004-03-11 |
2010-10-12 |
Rayonier Products And Financial Services Company |
Process for manufacturing high purity xylose
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