Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7005025 | Welded item A welded item is shown having an extruded weld bead with a high tensile strength relative to the layers from which it is formed. A valve with an insert is shown. A ball with an internal plenum is shown. ... | 02/28/2006 |
| 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 |
| 6316582 | Use of an alkoxylated polyamine surfactant as a viscose spin bath additive The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose filamentary and film materials by using an alkoxylated polyamine sur... | 11/13/2001 |
| 5622666 | Modified viscose fibres and method for their manufacture Modified viscose fibres comprise regenerated cellulose and contain in their structure microcrystalline chitosan bound mainly by hydrogen bonds with the regenerated cellulose of viscose fibres. To improve the properties of the fibres the modified fibres co... | 04/22/1997 |
| 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 |
| 5458835 | Process of making viscose staple fibers Viscose filaments, preferably in staple fibre form, which have a decitex of less than 5.0 and a multi-limbed cross-section, the limbs having a length-to-width aspect ratio of at least 2:1. Examples of multi-limbed cross-sectional shapes are Y-, X-, H- and... | 10/17/1995 |
| 4981515 | High functional regenerated cellulose composition A regenerated cellulose composition having excellent adsorptivity and flame resistance prepared by a process in which viscose, a solvent-adsorbing active carbon in the form of an aqueous dispersion and a specific phosphorus flame retarder are extruded int... | 01/01/1991 |
| 4575376 | Method for increasing the absorbency of cellulosic fibers Method for increasing the absorbency of cellulosic fibers by a high temperature wet treatment comprising heating the fibers in a water bath at temperatures within the range of about 95° C. to 100° C. for periods ranging from about one to sixty minutes. ... | 03/11/1986 |
| 4399255 | Alloy rayon fibers of regenerated cellulose and copolymeric acrylic acid salts Alloy rayon fiber of regenerated cellulose and an at least partially neutralized copolymer of acrylic or methacrylic acid and a comonomer selected from an hydroxyalkyl (C2 -C6) ester of such acid or a styrenic monomer. The copolymer ... | 08/16/1983 |
| 4396731 | Compositions of coated water-soluble polymers, their manufacture and their use to prepare aqueous solutions for use in enhanced oil recovery A solid composition of coated water-soluble polymer is made from 80 to 250 parts b.w. of solid particles of at least one water-soluble polymer coated with 100 parts b.w. of at least one paraffinic product solid at room temperature and whose melting point ... | 08/02/1983 |
| 4364890 | Procedure for the preparation of crimped high-wet-modulus staple fibres The procedure provides for the manufacture of crimped high-wet-modulus staple fibres by spinning from viscose to which have been added small quantities of derivatives of cyclohexanone or cyclopentanone and/or alkylated amino compounds of cyclohexane or cy... | 12/21/1982 |
| 4273118 | Fibers of high fluid holding capacity Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having 5 to 25 weight percent of alkali metal salts of cellulose sulfate being dispersed therein. The ... | 06/16/1981 |
| 4263244 | Process for spinning regenerated cellulose fibers containing an alloying polymer A regenerated cellulose fiber containing an alloying polymer of acrylic acid or methacrylic acid, or a copolymer containing acrylic and methacrylic acid moieties or an alkali metal or ammonium salt thereof or other anionic alloying polymers or copolymer i... | 04/21/1981 |
| 4240937 | Alloy fibers of rayon and an alkali metal or ammonium salt of an azeotropic copolymer of polyacrylic acid and methacrylic acid having improved absorbency Cardable cellulosic fibers having improved water and fluid absorbency are made by incorporating therein an alkali metal or ammonium salt of a copolymer of acrylic acid and methacrylic acid prepared by a process wherein the two monomers are mixed together ... | 12/23/1980 |
| 4199367 | Alloy rayon Alloy rayon staple fibers containing about 15 to 35% sodium carboxymethylcellulose based on the weight of cellulose ("b.o.c.") and having high fluid holding capacity at least 5.5 cc per gram (such as in the range of up to about 7 cc/g) measured by the Syn... | 04/22/1980 |
| 4179416 | Alloy rayon fibers having dispersed therein an amide polymer and a polyacrylic acid salt Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having polyvinylpyrrolidone dispersed therein. The polyvinylpyrrolidone may be present in combination ... | 12/18/1979 |
| 4177236 | Process for producing regenerated cellulose containing cross linked sodium lignate or sodium lignosulfonate Regenerated cellulose products containing formaldehyde cross linked sodium lignate or sodium lignosulfonate in an amount of from about 1% to about 40% by weight based on the weight of the cellulose in the product are prepared by mixing one of the cross li... | 12/04/1979 |
| 4169121 | Absorbent material for aqueous physiological fluids and process for its production An absorbent material is provided having exceptional fluid suction and holding power for aqueous physiological fluids, and which is thus especially adaptable for use as tampons, sanitary napkins, baby diapers, hospital pads and the like. The material cons... | 09/25/1979 |
| 4165743 | Regenerated cellulose fibers containing alkali metal or ammonium salt of a copolymer of an alkyl vinyl ether and ethylene dicarboxylic acid or anhydride and a process for making them An alloyed regenerated cellulose fiber containing an alkali metal or ammonium salt of a copolymer of an alkyl vinyl ether and an ethylene dicarboxylic acid or anhydride is prepared by a process wherein the copolymer is mixed with a viscose solution and th... | 08/28/1979 |
| 4144079 | Rayon fibers containing starch Rayon fibers made by spinning a viscose containing dissolved starch. Starch grains may be slurried in water, then made alkaline with NaOH to form a solution and then added to viscose.... | 03/13/1979 |
| 4136697 | Fibers of high fluid-holding capacity Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having polyvinylpyrrolidone dispersed therein. The polyvinylpyrrolidone may be present in combination ... | 01/30/1979 |
| 4123398 | Flame resistant cellulosic product containing antimony pentoxide and polyvinyl bromide A regenerated cellulosic product is made flame resistant by the addition to the cellulosic solution from which the product is regenerated of from 3 to 7% by weight of colloidal antimony pentoxide and from 5 to 30% by weight of polyvinyl bromide.... | 10/31/1978 |
| 4113674 | Poly-2-alkyl-2-oxazoline modified regenerated cellulosics Modified, regenerated cellulosics having good receptivity to acid dyes are prepared by introducing a poly-2-alkyl-2-oxazoline, such as poly-2-ethyl-2-oxazoline, having a weight average molecular weight of at least about 10,000 into an aged, cellulose-xant... | 09/12/1978 |
| 4066730 | Method for producing regenerated cellulose fibers having excellent flameproofness Regenerated cellulose fibers having very good flameproofness are obtained by adding a polyphosphonate having the following formula: ##STR1## wherein R1 is ethylene or propylene; R2 and R3 are methyl or ethyl which may... | 01/03/1978 |
| 4066584 | Alloy fibers of rayon and copolymers of acrylic and methacrylic acids Highly absorbent, cardable cellulosic fibers are made by incorporating therein, an alkali metal or ammonium salt of a copolymer of acrylic acid and methacrylic acid, where the ratio of acrylic acid units to methacrylic acid units (by weight) is from 90:10... | 01/03/1978 |
| 4063558 | Article and method for making high fluid-holding fiber mass Method for making alloy fibers having high fluid-holding capacity, the alloy fibers being comprised of a matrix of regenerated cellulose having alkali metal salts of alginic acid uniformly dispersed therein.... | 12/20/1977 |
| 4041121 | Method for making high fluid-holding fiber mass Method for making alloy fibers having high fluid-holding capacity, the alloy fibers being comprised of a matrix of regenerated cellulose having polyvinylpyrrolidone uniformly dispersed therein.... | 08/09/1977 |
| 3974251 | Production of flameproof fibers of regenerated cellulose Flame-retardant fibers of regenerated cellulose are produced by adding one or more flame-retardant phosphorus compounds to the viscose, extruding the viscose into a spinning bath and, if desired, stretching and after-treating the resulting filaments or st... | 08/10/1976 |
| 3968060 | Encapsulated flame retardant system Microcapsules having an average diameter below 5 microns and containing a flame retardant material are incorporated into polymeric materials, such as polyurethane foams without affecting the structural integrity of the cell walls of the foam. The capsules... | 07/06/1976 |
