| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 12/23/2009 | EP2135893A1 Method for making a biodegradable fibrous material composition |
| 12/23/2009 | CN101608412A Decrystallization method for plant straw by microwave-steam explosion synchronous coupling method |
| 12/23/2009 | CN100572658C Method for controlling gooey with 100% waste newsprint paper deinked pulp esterase |
| 12/09/2009 | EP2129828A1 Injector for flotation cell |
| 12/09/2009 | CN100567631C Disc type heat dispersing method and its device for paper-making process and use |
| 12/02/2009 | CN100564667C Combined pretreatment method of wood cellulose and system thereof |
| 12/02/2009 | CN100564666C Mushroom fruiting body cellulose |
| 11/26/2009 | WO2009142784A1 Methods and systems for feedstock production from sewage and product manufacturing therefrom |
| 11/26/2009 | CA2724400A1 Methods and systems for feedstock production from sewage and product manufacturing therefrom |
| 11/24/2009 | CA2168344C Thermostable xylanases |
| 11/19/2009 | WO2009138090A2 A process for the production of hydrolysed plant material |
| 11/18/2009 | CN101581051A Clean pulping method of linters |
| 11/18/2009 | CN101580522A Method for separating lignin and cellulose from lignocellulose by using ionic liquid solvent |
| 11/18/2009 | CN100560860C Process for vertically digesting bagasse pulp by anthraquinone sulfate process |
| 11/11/2009 | EP1338650B1 Cellulase preparation containing nonionic surfactant and method of treating fiber |
| 11/11/2009 | CN101575818A Method for fabricating chemical fiber paste by cotton linters without soda boiling, pollution and basically drainage |
| 11/11/2009 | CN100558650C Integreted tech. from ginger processing and waste water treating |
| 11/05/2009 | WO2009106968A3 Method for producing particles electrostatically |
| 10/29/2009 | WO2009095781A4 Methods for reducing enzyme consumption in second generation bioethanol fermentation in the presence of lignin |
| 10/28/2009 | CN101565915A Process for producing enhanced wood fiber sponge |
| 10/22/2009 | DE102008019839A1 Method for removing fine material from aqueous fibrous material suspension, particularly waste paper suspension, involves removing twenty percent mineral fine material by flotation in flotation plant |
| 10/22/2009 | DE102008019197A1 Method for removing contaminants from aqueous fiber suspension, particularly waste paper suspension, involves separating fiber suspension into two streams |
| 10/21/2009 | CN101560740A Bleaching method for bleaching deinked waste pulp |
| 10/20/2009 | CA2407014C Addition of thp or thp salt to pulping liquors to reduce or destroy catalase and/or catalase producing bacteria |
| 10/14/2009 | CN100549289C Method and equipment for producing injection moulding corrugated board using waste paper |
| 10/08/2009 | WO2009122018A2 Method of treating biomass |
| 10/08/2009 | WO2008123130A8 Method of deinking waste printed paper |
| 10/08/2009 | CA2729443A1 Method of treating biomass |
| 10/07/2009 | CN100547155C Positive air admission type flotation deinking tank for lab |
| 09/30/2009 | CN101545227A Clean production method for producing degradable multifunctional membrane by utilizing bioengineering agricultural stalk |
| 09/24/2009 | DE102008014950A1 Impurities separating method for fibrous material suspension in paper production, involves holding set of openings of filter freely by temporal changes of difference of pressure arising in sorter openings |
| 09/23/2009 | CN101538810A Wet strength paper treatment technology |
| 09/23/2009 | CN101538597A Method for disposing straws by sulfur trioxide gas |
| 09/17/2009 | DE102008013458A1 Method for eliminating extraneous material from aqueous fiber suspension, particularly waste paper suspension, involves accomplishing fractionation of aqueous fiber suspension for forming fine fraction and coarse fraction |
| 09/16/2009 | CN101532261A Efficient composite enzyme method for separating and purifying cellulose from wood |
| 09/10/2009 | DE202009008187U1 Flotation Flotation |
| 09/09/2009 | CN101525858A Waste paper deinking pulp chlorine-free bleaching method |
| 09/03/2009 | WO2009106968A2 Method for producing particles electrostatically |
| 09/03/2009 | WO2009105928A1 A process of joint production of fuel ethanol, electricity and paper pulp by classification conversion of pennisetum purpureum schum |
| 09/03/2009 | WO2009088635A3 Enzymatic treatment of pulp for lyocell manufacture |
| 09/02/2009 | CN101519852A Method for separating cellulose from straws and getting cellulose solution |
| 09/02/2009 | CN101519476A Method for preparing high-hydroscopicity resin in homogeneous aqueous medium by using straw as raw material |
| 09/02/2009 | CN100535238C Aeration type convection mixing ink-removing flotation tank |
| 09/02/2009 | CN100535109C Amylase variants |
| 09/01/2009 | CA2301371C Process for bleaching lignocellulose pulp |
| 08/26/2009 | CN100532332C Formula and preparation process of plant nutrition liquid prepared by using plant fiber biological pulping recovery liquid |
| 08/20/2009 | DE102008009134A1 Removing impurities from aqueous fibrous material suspension formed from printed waste paper, comprises forming fine fraction and rough fraction from the material suspension by fractionating, and treating the fine fraction in a floatation |
| 08/19/2009 | CN201292477Y Waste paper fibre stuff small-sized processor |
| 08/19/2009 | CN101509209A Method of preparing clubbed nano-cellulose |
| 08/19/2009 | CN101508005A Paper pouring channel tube for casting and shaping technique thereof |
| 08/13/2009 | DE102008008762A1 Filtrate treating method for use during thickening of paper fiber suspension obtained from waste paper to produce graphical paper, involves adding partial flows to filtrates, where partial flows are produced from condensed substances |
| 08/12/2009 | CN101506442A Reduced dust acoustic panel |
| 08/12/2009 | CN101503865A Method for preparing mlcrocrystalline cellulose by corps straw |
| 08/12/2009 | CN100526551C Cotton-short-fiber continuous steam-poaching method and apparatus |
| 08/06/2009 | WO2009095781A1 Methods for reducing enzyme consumption in second generation bioethanol fermentation in the presence of lignin |
| 08/05/2009 | CN201284442Y Apparatus used for lignocellulose stepped pretreatment |
| 08/04/2009 | CA2300836C Polyammonium quaternary polymer for controlling anionic trash and pitch deposition and treating coated broke |
| 07/22/2009 | CN100516356C Physical mechanical deink process for waste paper |
| 07/22/2009 | CN100516355C Method for preparing paper pulp by fiber residue generated during microorganism product fermentation |
| 07/16/2009 | WO2009088635A2 Enzymatic treatment of pulp for lyocell manufacture |
| 07/16/2009 | DE102008000047A1 Increasing the degree of whiteness of fiber suspension obtained from waste paper, comprises dewatering the fiber suspension and partly charging the surface of the solids contained in the filtrate with calcium carbonate in chemical reaction |
| 07/09/2009 | WO2009085655A1 Repulpable paper compositions |
| 07/08/2009 | CN101476253A Method for coproduction of cellulose, active carbon and compound fertilizer from plant stalk |
| 07/08/2009 | CN101476252A Method for extracting cellulose, lignose and compound fertilizer from cotton-seed hull |
| 07/08/2009 | CN101476251A Water-saving production process for cellulose |
| 07/08/2009 | CN100510064C Novel laccase enzyme and gene encoding the enzyme |
| 07/07/2009 | US7556713 Method and system for feeding cellulose chips to a high pressure continuous cooking system |
| 07/02/2009 | US20090170747 Cellulase variants |
| 07/02/2009 | US20090165967 Use of Modified Inorganic Particles in Deinking |
| 07/01/2009 | EP2074256A1 Flotation in recycled fibre process |
| 07/01/2009 | EP1969123A4 Novel enzymes |
| 07/01/2009 | EP1392913B1 Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids and lipophilic extractive material |
| 07/01/2009 | CN201265121Y Solid paper pulp machine |
| 07/01/2009 | CN100507145C Process for producing mica pulp by mica paper waste material |
| 06/24/2009 | CN101463571A Pretreatment method for ultra-high pressure blasting wood fiber material |
| 06/18/2009 | WO2009073948A1 System and method for repulping of paper products and improvement of water quality with dipolar solvents and recovery |
| 06/18/2009 | DE102008030531A1 Verfahren und Vorrichtung zur Entfernung von Gas, insbesondere Luft aus Flotationsschaum und ihre Verwendung Method and device for removing gas, in particular air from flotation froth and their use |
| 06/18/2009 | DE102007060736A1 Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension mit Hilfe mindestens einer Flotationsanlage A method for removing anionic trash from an aqueous paper fiber suspension with the aid of at least one flotation |
| 06/18/2009 | CA2721460A1 System and method for repulping of paper products and improvement of water quality with dipolar solvents and recovery |
| 06/17/2009 | CN101457495A Condensation magnetic selection deinking method |
| 06/17/2009 | CN100500989C Full component separation for cell wall of agricultural refuse |
| 06/11/2009 | WO2009073145A1 Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries |
| 06/11/2009 | WO2001057311A3 Papermaking process and paper made therefrom |
| 06/11/2009 | US20090148936 Lentiviral vector-mediated gene transfer and uses thereof |
| 06/11/2009 | CA2707205A1 Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries |
| 06/04/2009 | DE102007057846A1 Removing coloring particle, preferably printing ink particle from a fiber material comprises dissolving fiber material to form a suspension, adding calcium hydroxide and carbon dioxide into the suspension and removing the coloring particle |
| 06/03/2009 | EP2064397A2 Reduced dust acoustic panel |
| 06/03/2009 | CN100494563C Pulping method for high grade bleached cotton starch plate |
| 06/02/2009 | US7541175 Alkaline extraction stages comprising xylanase |
| 05/28/2009 | US20090133845 Method of controlling recycled fibre line, and recycled fibre line |
| 05/28/2009 | DE102007056896A1 Method for processing papermaking fiber suspension obtained from waste paper, involves admitting portion of suspended solids contained in filtrate at point of papermaking fiber suspension |
| 05/28/2009 | DE102007055557A1 Verfahren und Vorrichtung zum Aufbereiten von Altpapier Method and apparatus for treating waste paper |
| 05/27/2009 | CN101439783A Disposal shockproof inner lining wrapper made of papermaking waste tail slurry and production method |
| 05/22/2009 | WO2008110456A3 Method of treating cellulosic materials with hydrophobins |
| 05/20/2009 | EP1141484B1 Method for accelerated degradation of mulch paper and mulch paper |
| 05/20/2009 | DE202008000684U1 Stofflöser zur Zerkleinerung und Suspendierung von Papierstoff Pulper for comminuting and suspending paper stock |
| 05/20/2009 | DE102007054743A1 Printed waste paper processing method for production of paper i.e. graphical paper, involves cleaning dissolved waste paper pulps from disturbing impurities, where printing inks are removed from flotation plants |
| 05/20/2009 | CN101435171A Method for producing recuperated yarn tube base paper by using waste slag and product thereof |
| 05/20/2009 | CN100489191C Method for preparing homogenous cellulosic product from cellulosic waste materials |
| 05/14/2009 | US20090120596 Removal of organic deposits from recycled fibers used for producing paper |