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| Number | Title | Issue Date |
| 7736562 | Die assembly and production process for profile extrusion The invention discloses an improved die assembly for the extrusion of thermoplastic resin cellulosic fiber composite profiles meant to minimize and substantially prevent the occurrence of melt fracture on the surface of the extruded composite profiles. Comprising th... | 06/15/2010 |
| 7243372 | Modified Harvard architecture processor having data memory space mapped to program memory space with erroneous execution protection A processor has an architecture that provides the processing speed advantages of the Harvard architecture, but does not require two separate external memories in order to expand both data memory and program instruction memory. The processor has separate program memo... | 07/10/2007 |
| 7007172 | Modified Harvard architecture processor having data memory space mapped to program memory space with erroneous execution protection A processor has an architecture that provides the processing speed advantages of the Harvard architecture, but does not require two separate external memories in order to expand both data memory and program instruction memory. The processor has separate program memo... | 02/28/2006 |
| 6974608 | Cellulose ester film, cellulose ester dope, protective film of polarizing plate and polarizing plate Disclosed is a cellulose ester film comprising a polymer prepared by polymerizing at least one ethylenically unsaturated monomer selected from vinyl esters, vinyl esters having a functional group, acrylic esters, and acrylic esters having a functional group, wherein... | 12/13/2005 |
| 6976158 | Repeat instruction with interrupt A processor for processing an interruptible repeat instruction is provided. The repeat instruction may include an immediate operand specifying a loop count value corresponding to the number of times that the loop is to be repeated. Alternatively, the repeat instruct... | 12/13/2005 |
| 6972102 | Method and device for continually producing an extrusion solution The invention relates to a method for continually producing an extrusion solution for producing cellulosed shaped bodies, such as fibres and films, according to the lyocell method. According to the inventive method, (a) a cellulose suspension is produced from cellul... | 12/06/2005 |
| 6551688 | Calendered polyester films or sheets having a haze value of less than five percent A calendered film or sheet of a polyester resin composition has a haze value of less than 5 percent. The polyester resin composition comprises a polyester having a crystallization half-time from a molten state of at least 5 minutes and an additive compris... | 04/22/2003 |
| 6013182 | Selectively permeable hollow fiber membrane and process for producing same A selectively permeable hollow fiber membrane for blood dialysis consisting substantially of a cellulose derivative, which has at least a dense layer on the innermost side and a porous layer of greater void percentage on the outside, and a process for pro... | 01/11/2000 |
| 5993661 | Macroporous or microporous filtration membrane, method of preparation and use This invention relates to a microporous or macroporous affinity filtration membrane wherein the matrix is composed of chitosan or chitin and the pores are made by dissolution of porogen during the preparation of the membrane. The invention also relates to... | 11/30/1999 |
| 5849189 | Hollow fiber blood purifying membrane and process for its production A hollow fiber blood purifying membrane which is a hollow fiber membrane substantially composed of cellulose acetate, has a substantially non-oriented distribution of cellulose acetate polymer particles on the inner surface of the hollow fibers, has a den... | 12/15/1998 |
| 5783124 | Cellulose acetate hemodialysis membrane A cellulose acetate membrane composed of a mixture comprising a cellulose triacetate and a cellulose diacetate and having an improved heat stability, which does not substantially show a melting peak of cellulose diacetate but substantially shows a melting... | 07/21/1998 |
| 5779736 | Process for making fibrillated cellulose acetate staple fibers The present invention discloses a process for producing a fibrillated cellulose acetate fiber comprising contacting cellulose acetate fiber with a strong base solution at conditions sufficient to remove greater than about 5% of bulk acetyl groups from sai... | 07/14/1998 |
| 5705631 | Laminar flow process of preparing cellulose diacetate fibers A laminar flow process for preparing cellulose diacetate fibers is disclosed. In the process, a precipitation-acid stream and an acid-dope stream are contacted in a zone having substantially laminar flow. The acid-dope stream is annularly disposed within ... | 01/06/1998 |
| 5549861 | Process for the production of shaped structures of cellulose A process for the production of shaped structures of cellulose, in particular fibers of cellulose, by shaping and subsequent regeneration of water-soluble cellulose derivatives is described. The process employs water-soluble alcohols, water-soluble ketone... | 08/27/1996 |
| 5540874 | Cellulose solution for shaping and method of shaping the same A cellulose solution having excellent fluidity and formability is prepared by dissolving a cellulose composition containing a component (I) of cellulose having a polymerization degree of 500 to 1000, and a component (II) of at least one member selected fr... | 07/30/1996 |
| 5512230 | Process for making cellulose acetate fibers A method for spinning a cellulose acetate fiber having a low degree of substitution per anhydroglucose unit (DS/AGU) of the cellulose acetate is provided. The addition of 5 to 40 weight percent water to cellulose acetate(CA)/acetone spinning solutions (do... | 04/30/1996 |
| 5505890 | Process for manufacturing cellulose acetate membranes A dialysis membrane in the form of a hollow fiber with a continuous internal cavity is made of cellulose acetate or a cellulose acetate derivative. The membrane has a maximum screen coefficient of 0.04 for albumin with a molecular weight of 68,000. A dial... | 04/09/1996 |
| 5505859 | Hollow fiber for dialysis and process of manufacturing A dialysis membrane is made of a regenerated cellulose polymer in the form of a hollow fiber with a continuous internal cavity filled essentially with a gas. The hollow fiber has a porous inner and an outer surface. The outer surface of the hollow fiber i... | 04/09/1996 |
| 5462801 | Filter Tow, method for the production thereof, as well as tobacco smoke filter element and method for its production A filter tow from cellulose acetate filaments and/or staple fibers is described on the surface of which an additive from cellulose chain-splitting enzymes is present, at least the surface of the filaments and staple fibers consisting of a cellulose acetat... | 10/31/1995 |
| 5403485 | Dialysis membrane made of cellulose acetate A dialysis membrane in the form of a hollow fiber with a continuous internal cavity is made of cellulose acetate or a cellulose acetate derivative. The hollow fiber is made by using a gas to form the internal hollow cavity. A dialysis membrane in the form... | 04/04/1995 |
| 5296286 | Process for preparing subdenier fibers, pulp-like short fibers, fibrids, rovings and mats from isotropic polymer solutions A process for preparing subdenier fibers and structures thereof from isotropic polymer solutions is disclosed. The process comprises extruding a stream of the polymer solution into a chamber, introducing a pressurized gas into the chamber, directing the g... | 03/22/1994 |
| 5240665 | Process of making cellulose acetate fibers from spinning solutions containing metal oxide precursor An improved extrudable solution such as a cellulose acetate/acetone spinning solution is provided containing cellulose ester, solvent, metal oxide precursor, acid, and water. The solution is extruded such as by spinning and produces a shaped article such ... | 08/31/1993 |
| 5011637 | Preparing cellulose ester membranes for gas separation This invention relates to a novel composition useful for preparing a semi-permeable cellulose ester gas separation membrane, which composition includes a mixture of a cellulose ester, a solvent selected from the group consisting essentially of glycerol ac... | 04/30/1991 |
| 5000898 | Process for making oriented, shaped articles of lyotropic polysaccharide/thermally-consolidatable polymer blends A process for making oriented, shaped articles of lyotropic polysaccharide/thermally-consolidatable polymer blends by orienting spinnable dopes containing fiber-forming polymers being at least about 55% and less than about 80% lyotropic polysaccharide and... | 03/19/1991 |
| 4963298 | Process for preparing fiber, rovings and mats from lyotropic liquid crystalline polymers Process for preparing subdenier fiber and structures thereof from lyotropic liquid crystalline polymers comprising extruding a stream of the polymer into a chamber, introducing a pressurized gas into the chamber, directing the gas in the flow direction of... | 10/16/1990 |
| 4725394 | Process for preparing high stength cellulosic fibers High strength, high modulus cellulose triacetate fibers are produced by spinning a 30-50% by weight solution of cellulose triacetate having an acetyl content of at least 42.5% and an inherent viscosity of at least 5 from a solvent mixture comprising nitri... | 02/16/1988 |
| 4681713 | Method of making a hollow fiber membrane for dialysis A hollow fiber membrane of a cellulose ester for dialysis of body liquids, such as blood, and a method are described. The membrane, which has a membrane thickness of less than 20μ, and a yield strength Sb (g/filament) after heat-treatment at 8... | 07/21/1987 |
| 4592885 | Film manufacturing method for improved surface smoothness A method for manufacturing film without melt fracturing in which a flow of a polymer solution having a high viscosity extruded from a die slit onto a running and spreading plane is extruded through the die slit together with a low viscosity solution with ... | 06/03/1986 |
| 4543221 | Method for making cellulose semipermeable hollow fibers Improved cellulose semipermeable hollow fibers useful in detoxifying blood during hemodialysis or hemofiltration treatments. The cellulose fibers are fine, capillary fibers that are made by melt extrusion of certain cellulose ester polyol melt spin compos... | 09/24/1985 |
| 4541972 | Preparation of cellulose acetate membrane and its use for polar solvent-oil separation It has been discovered that cellulose acetate membranes, fabricated using nonaqueous solvent systems, can be used for the separation of polar solvents, especially ketone dewaxing solvents from dewaxed oil. The cellulose acetate membranes so prepared are o... | 09/17/1985 |
| 4499043 | Process for producing a cellulose ester support A process for producing a cellulose ester support is described which comprises producing said support from an organic solvent solution of a cellulose ester containing 30 ppm or less alkaline earth metal.... | 02/12/1985 |
| 4342711 | Method of manufacturing hollow fiber A method of manufacturing a hollow fiber includes the steps of: extruding a spinning solution of high molecular weight compound dissolved into a solvent, from an annular slit; and simultaneously extruding a liquid consisting of at least one of the solvent and ... | 08/03/1982 |
| 4276173 | Cellulose acetate hollow fiber and method for making same An improved cellulose acetate semi-permeable hollow fiber suitable for use in artificial kidneys and a process for making same.... | 06/30/1981 |
| 4234431 | Membrane filtration type hollow fibers and method for the preparation of same The invention concerns a membrane filtration type hollow fiber. It is composed of a single material phase which material is a chain high polymer such as cellulose acetate and capable of forming fibers by the spinning of the high polymer. The cylindrical w... | 11/18/1980 |
| 4200558 | Method of producing hydrophilic articles of water-insoluble polymers Hydrophilic films, fibers and spongy articles of a water-insoluble polymer selected from the group consisting of regenerated cellulose, cellulose ether, cellulose ester and polyalkylene, and capable of forming fibers and films, are produced by distributin... | 04/29/1980 |
| 4192838 | Process for producing filter material A non-woven cellulose ester fibrous filter sheet material comprising cellulose ester staple fibers and cellulose ester fibrets which exhibits improved filtration properties and the method of its preparation.... | 03/11/1980 |
| 4181935 | Data processor with improved microprogramming Improved means and methods are described for providing microprogramming in a microprogrammed data processor. A separate, relatively fast access Read/Write microinstruction memory is provided which operates as an index-associative cache memory with respect... | 01/01/1980 |
| 4141942 | Process for preparing fibrous materials by wet method This invention relates to a process for preparing fibrous materials by wet method. Fibrous materials with excellent properties can be obtained by feeding the starting solution to the interface area of two phases of the coagulation bath.... | 02/27/1979 |
| 4137201 | Cyclic phosphonite stabilized cellulose ester compositions This invention is directed to a new thermal stabilizer system for cellulose esters and their commercially useful formulated compositions which can be molded, shaped and otherwise processed in a thermoplastic condition at elevated temperatures to provide p... | 01/30/1979 |
| 4120836 | Process for preparing shaped cellulose acetate article The evolution of formaldehyde from shaped cellulose acetayte articles containing methylolated melamine or guanamine polymers is reduced by adding to the solutions from which the cellulose acetate article is regenerated, from 1 to 20% by weight based on th... | 10/17/1978 |
