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| Number | Title | Issue Date |
| 7709631 | Oxidized microbial cellulose and use thereof This application describes a bioresorbable biocellulose suitable for medical and surgical applications. In particular, the invention describes periodate oxidized microbial cellulose that can be produced to have any mechanical and degradation profile, depending on th... | 05/04/2010 |
| 7319114 | Hollow polymer particles, method for preparing hollow polymer particles, porous ceramic filter, and method for preparing porous ceramic filter Hollow polymer particles are provided to have an average particle diameter of 15 μm or more and 500 μm or less and a 10%-compressive strength of 1.5 MPa or more, and the hollow polymer particle includes a hollow portion in the interior. In addition, a porous ceram... | 01/15/2008 |
| 7192729 | Methods for assaying homocysteine The present invention relates to compositions and methods for assaying homocysteine (Hcy) and thus related moieties, e.g., S-adenosylhomocysteine (SAH) or adenosine. More particularly, assay methods that employ, mutant SAH hydrolase having binding affinity for Hcy, ... | 03/20/2007 |
| 7173125 | Triphosphate oligonucleotide modification reagents and uses thereof Hydrazino, oxyamino and carbonyl-based monomers and methods for incorporation into oligonucleotides during enzymatic synthesis are provided. Modified oligonucleotides are provided that incorporate the monomers provided herein. Immobilized oligonucleotides and oligon... | 02/06/2007 |
| 7144461 | Method of removing acid component in deteriorated acetate film There is provided a method of removing acids from the surface and interior of an acetate film produced by deterioration during storage. Such methods are characterized by extracting and removing the acids from the surface and interior of the acetate film, and the ext... | 12/05/2006 |
| 7102024 | Functional biopolymer modification reagents and uses thereof Hydrazino, oxyamino and carbonyl-based reagents and methods for incorporation into oligonucleotides during their solid phase synthesis are provided. Modified oligonucleotides are provided that incorporate the reagents provided here in. Immobilized oligonucleotides a... | 09/05/2006 |
| 7101996 | Process for preparing purified fractions of hemicellulose and cellulose-hemicellulose complexes from alkali treated fiber and products made by the process A process for obtaining purified hemicellulose, cellulose and cellulose-hemicellulose complexes comprising the steps of adding alcohol to caustic liquor from alkali extraction of fiber to precipitate the hemicellulose and the simultaneous, or about simultaneous, den... | 09/05/2006 |
| 7094448 | Spray pack Disclosed is a spray pack for use in forming a uniform, stable spray coating, comprising a spray container device and, packed therein, a spraying composition comprising a liquid dispersion medium and, dispersed therein, particulate cellulose having an average degree... | 08/22/2006 |
| 7012139 | Process of preparing delayed-dissolution cellulose ethers A process for preparing cellulose ethers having delayed dissolution in water is described. The process comprises: (a) treating a moist cellulose ether with a solution comprising a dialdehyde; (b) adding an aqueous salt solution to the moist cellulose ether, such tha... | 03/14/2006 |
| 7005514 | Process for preparing microcrystalline cellulose A process for producing microcrystalline cellulose comprised of the steps of contacting a paper grade pulp with an alkali hydrolysis agent, washing the hydrolyzed pulp and contacting the hydrolyzed pulp with an acid hydrolysis agent and washing the acid hydrolyzed p... | 02/28/2006 |
| 6986828 | Process for producing low DP microcrystalline cellulose A process for producing microcrystalline cellulose. The process comprising the following steps: a) preparation of a pulp by repulping, b) pressing of the pulp obtained in a), c) decompaction of the... | 01/17/2006 |
| 6958393 | Cellulose derivatives having gel-like rheological properties and process for the preparation thereof A description is given of cellulose derivatives having gel-like rheological properties in aqueous solution characterized in that: a) cellulose is alkalized with aqueous alkali metal hydroxide solution in the presence of a suspensio... | 10/25/2005 |
| 6951933 | Superabsorbent polymer The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care absorbent products that incorporated the polymer are also provided.... | 10/04/2005 |
| 6933381 | Method of preparing modified cellulose ether Process for the production of polysaccharide ethers, e.g. cellulose ethers, are disclosed wherein salts formed during the process, e.g., sodium nitrate or sodium acetate, are converted to their corresponding acids and bases by means of an electric current, preferabl... | 08/23/2005 |
| 6929884 | Method for manufacture of films containing insoluble solids embedded in cellulose-based films A film which slowly releases solids is prepared by dissolving cellulose in a solvent such as an alkali metal salt, for example L1Cl in a polar solvent such as DMAC, dispersing the solid in the solution and gelling the solution with water to form a film. | 08/16/2005 |
| 6852413 | Lyocell multi-filament for tire cord and method of producing the same Disclosed is a lyocell multi-filament for a tire cord and a method of producing the same. The method includes i) dissolving mixed powder of cellulose and polyvinyl alcohol in a mixed solvent of N-methyl morpholine N-oxide and water to prepare a dope, ii) extruding t... | 02/08/2005 |
| 6827773 | Cellulose solvent compositions and methods of making and employing same Cellulose solvents, cellulose compositions, and methods of making and using the same. For example, a cellulose composition including cellulose dissolved in the following solvent: an amine-based composition, provided however, the amine-based composition is not ammoni... | 12/07/2004 |
| 6821531 | Powdered/microfibrillated cellulose A new cellulose excipient suitable for use as a binder, filler, and/or disintegrant in the development of solid dosage forms and as a bodying agent or a drug carrier in the preparation of topical formulations is described. The cellulose excipient is formed by soakin... | 11/23/2004 |
| 6800753 | Regenerated cellulose and oxidized cellulose membranes as potential biodegradable platforms for drug delivery and tissue engineering The present invention describes the use of regenerated celluloses (RC) and (ORC) oxidized regenerated celluloses in the manufacture of scaffolds for drug delivery and tissue engineering. The RC and ORC are biodegradable and biocompatible. The carboxyl, aldehyde, or ... | 10/05/2004 |
| 6676739 | Method for producing a cellulose solution in an aqueous amine oxide, said solution having an increased thermal stability The invention relates to a method for producing a cellulose solution in an aqueous amine oxide, preferably N-methyl-morpholine-N-oxide, for processing to form cellulosed moulded bodies according to the Lyocell method, whereby said solution has an increase... | 01/13/2004 |
| 6562961 | Aminoalkyl trialkyl silyl cellulose and a method for coating surfaces The invention relates to polysaccharide derivatives comprising a) at least one hydrophobic and b) at least one nitrogen-containing substituent; in particular, the derivative is a cellulose ether which, as substituent a), has a trialkylsilyl and, as substi... | 05/13/2003 |
| 6555678 | Method for preparing a regenerated cellulose fibre or yarn A method has been developed for making regenerated cellulose yarn. The method includes the steps of spinning a solution derived from cellulose or a cellulose derivative in a molten state through at least one extrusion die, then regenerating the cellulose ... | 04/29/2003 |
| 6541627 | Cellulose dispersion A cellulose dispersion which is a dispersion comprising a dispersing medium and a cellulose having a fraction of cellulose I type crystal component of not more than 0.1 and a fraction of cellulose II type crystal component of not more than 0.4 and in whic... | 04/01/2003 |
| 6515121 | Method of manufacturing and collecting cellulosic particles Cellulosic fibrids can be made by mixing together under turbulent conditions viscose and a coagulating and regenerating liquor containing preformed fibrids to form a suspension of fibrids in a spent liquor, and collecting the fibrids from the spent liquor... | 02/04/2003 |
| 6500947 | Superabsorbent polymer The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care absorbent products that incorporated the polymer are also pr... | 12/31/2002 |
| 6468668 | Cellulosic composite product and a method of producing the same The present invention relates to a cellulose derivative having biodegradability, recycling properties, excellent mechanical strength and mold processability. The cellulose derivative is a product of a monosaccharide derivative or oligosaccharide derivativ... | 10/22/2002 |
| 6392035 | Reactive cellulose and method for making same The invention concerns reactive cellulose, i.e. cellulose having in particular a very low degree of crystallinity obtainable with a high degree of purity. Said novel reactive cellulose is particularly used as raw material for making cellulose ethers. The ... | 05/21/2002 |
| 6392034 | Microcrystalline cellulose This invention describes a method of MCC production by means of the following process: first, treating a cellulose source material with an alkaline solution which induces swelling of the cellulose source material; second, addition of hydrogen peroxide and... | 05/21/2002 |
| 6309454 | Freeze-dried composite materials and processes for the production thereof The invention provides a sterile freeze-dried sponge, wherein at least 80% by weight of the sponge consists of collagen and oxidized regenerated cellulose in the weight ratio 60:40 to 40:60, wherein the sponge has a dry tensile strength of more than 3N an... | 10/30/2001 |
| 6300493 | Method and compositions for modification of polysaccharide characteristics Methods and compositions are provided for the modification of polysaccharide structures using polysaccharidase binding or catalytic domains either alone or in tandem to modify the structure of polysaccharides. These methods and compositions are exemplifie... | 10/09/2001 |
| 6293972 | Process for fluorinating cellulosic materials and fluorinated cellulosic materials In the fluorinated cellulosic material obtained by a method for fluorinating a cellulosic material by reacting a cellulosic material selected from the group consisting of cellulose material and lignocellulose material with at least one fluorine-containing... | 09/25/2001 |
| 6225461 | Cellulose microspheres and method of manufacturing the same A method of manufacturing cellulose microspheres is proposed which is high in productivity, and takes into consideration the safety and environmental aspects. The cellulose microspheres are manufactured by mixing at least three parts by weight of a water-... | 05/01/2001 |
| 6130327 | Regenerated cellulose incorporating phosphorus compounds so as to be flame-retardant The invention relates to flame-retardant regenerated celluloses which contain at least one compound of formula I: ##STR1## The subject matter of the invention is also the use of compounds of formula I as a flame-retardant agent especially for regener... | 10/10/2000 |
| 6123887 | Process for preparing regenerated cellulose article A composition containing cellulose formate and a solvent system. At a temperature at least equal to a value Tf the composition is a solution, and at a temperature appreciably less than Tf the composition is an elastic, thermoreversib... | 09/26/2000 |
| 6045587 | Method of reducing color and polymerization decay of cellulose viscose A method of reducing color and polymerization decay of cellulose viscose includes the step of permeating a 1,3-phenylene-bis 2-oxazoline as a polymerization anti-decay additive during dissolving a cellulose in water and a solvent to form a cellulose visco... | 04/04/2000 |
| 6001995 | Water-soluble etherified starches Aminated cellulose fiber obtained by adding one or more starches etherified with C2 -C5 -alkylamines which may additionally be substituted in the alkyl moiety by 1 to 2 further hydroxyl and methoxy groups and whose amino group is a p... | 12/14/1999 |
| 5986087 | Sulfonation of regenerated cellulose with sulfonated polymers and use of the thus modified fibres Sulfonated regenerated cellulose fiber obtained by adding a modifier to a viscose dope or alkali cellulose or cellulose solution and spinning fiber therefrom, wherefor the modifier is a starch etherified with C2 -C5 -alkylsulfonic ac... | 11/16/1999 |
| 5977345 | Inside-out crosslinked and commercial-scale hydrogels, and sub-macromolecular selective purification using the hyrdogels Relating to chromatographic processes and ion-exchange and affinity matrices, a spatial installation method for a bifunctional reagent that crosslinks and/or activates a polymer matrix is disclosed, with inside-outside installation of a bifunctional reage... | 11/02/1999 |
| 5972507 | Method of manufacturing cellulose beads A method for producing cellulose beads which are high in sphericity and narrow in bead size distribution. Cellulose beads are produced by supplying a cellulose solution into a rotating vessel which is rotated at high speed by a rotary shaft and has outlet... | 10/26/1999 |
| 5951933 | Processes for precipitating tertiary amine oxide cellulose solutions containing water soluble polymers and products made therefrom The invention provides improvements in processes for film and fiber production involving precipitating cellulose from tertiary amine oxide solutions wherein a water soluble polymer is incorporated into the solution in an amount sufficient to slow precipit... | 09/14/1999 |
