Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7070723 | Method for spin-drawing of melt-spun yarns A method is provided for simultaneous spin-drawing of continuous yarns consisting of one or more filaments, comprising the steps in which a melt of a thermoplastic material is fed to a spinning device, the melt is extruded through a spinneret by means of extrusion o... | 07/04/2006 |
| 6963157 | Lead zirconate titanate fiber, smart board using lead zirconate titanate fiber, actuator utilizing smart board, and sensor utilizing smart board A PZT fiber is formed by using a titanium wire or a heat-resistant metal wire made of platinum or the like, as a core wire, and overlaying PZT crystals on a surface of the wire. A smart board utilizing the PZT fiber is formed by embedding the PZT fiber into a conduc... | 11/08/2005 |
| 6245876 | Continuous molded article for polyurethaneurea and production method thereof The present invention relates to a continuous shaped article such as a polyurethaneurea fiber and a polyurethaneurea film having a birefringence index (Ɗn) of from at least 1.0×10-4 to 8.0×10-4 in a nontensile state, a crosslinkin... | 06/12/2001 |
| 6174358 | Method for producing cellulose particles A method for producing cellulose particles whereby a cellulose solution is dispersed in a regenerant or nonsolvent and the cellulose is regenerated or precipitated in dispersed form into cellulose particles.... | 01/16/2001 |
| 5976439 | Alginate ropes, method of preparation and use A process for preparing an alginate rope, which process comprises the steps of: (a) extruding an aqueous solution of a water soluble alginate into a coagulation bath; (b) contacting the extruded water soluble alginate with a source of a cation capable of ... | 11/02/1999 |
| 5906890 | Polypropylene fiber, a method for manufacture thereof, and a non-woven fabric made of the same There is disclosed a polypropylene fiber which is suitable for hot rolling and which is used for producing a non-woven fabric having high tenacity and good feel by heat rolling within a wide range of processing temperatures. A polypropylene fiber contains... | 05/25/1999 |
| 5405696 | Ultra-oriented crystalline filaments Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30° C. above the glass transition temperature of ... | 04/11/1995 |
| 5310866 | Process for stretching a swollen flexible-chain polymer Process for stretching an article substantially consisting of a flexible-chain polymer, which is swollen in a solvent for that polymer, in which process an article substantially consisting of a copolymer of the polymer with a second polymer is swollen in ... | 05/10/1994 |
| 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 |
| 5276083 | Continuous polyester filaments available for composing carpets This invention is directed to continuous polyester filaments in tufted form for composing quality carpets having a pleasing appearance. The carpets are formed by use of continuous polyester filaments comprising polyethylene terephthalate resin having at l... | 01/04/1994 |
| 5268133 | Melt spinning of ultra-oriented crystalline filaments Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30° C. above the glass transition temperature of ... | 12/07/1993 |
| 5254303 | Method and device for manufacturing molded bodies In a method and device for shaping thread-forming materials from a homogeneous isotropic or anisotropic, single or multiphase liquid multicomponent system, the liquid multicomponent system is forced through nozzle openings into a liquid which is under pre... | 10/19/1993 |
| 5252396 | Reversibly color-changing shaped material and process for producing the same The present invention relates to a shaped material consisting of a layer having open microvoids (hereinafter referred to as light-scattering layer) and a layer having a hue different from that of the light-scattering layer (hereinafter referred to as colo... | 10/12/1993 |
| 5171504 | Process for producing high strength, high modulus thermoplastic fibers The invention provides improved thermoplastic high strength, highly oriented fibers and a process for producing the fibers by melt spinning a thermoplastic polymer to form a threadline, preferably passing the threadline through a thermal conditioning zone... | 12/15/1992 |
| 5149480 | Melt spinning of ultra-oriented crystalline polyester filaments Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30° C. above the glass transition temperature of ... | 09/22/1992 |
| 5064596 | Process for preparing a slender or thin ceramic green body A process for preparing a slender or thin ceramic green body, which comprises discharging a raw material slurry comprising a ceramic powder raw material, a binder and a solvent from a discharge outlet in a slender or thin shape, and then contacting it wit... | 11/12/1991 |
| 5019316 | Method for producing thermoplastic synthetic yarn A system for producing a drawn yarn having a durable mechanical and thermal stability in practical use from a fiber-forming polymer by means of a single continuous process is disclosed. A yarn extruded from a spinneret is first introduced into a liquid ba... | 05/28/1991 |
| 4965033 | Process for spinning high-strength, high-modulus aromatic polyamides A process for spinning high-strength high-modulus, aromatic polyamide filaments is disclosed in which an acid solution containing at least 30 g per 100 ml acid of aromatic polyamide having an inherent viscosity of at least 4 and chain-extending bonds whic... | 10/23/1990 |
| 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 |
| 4898704 | Coagulating process for filaments Coagulating a warp of filaments from a linear spinneret by delivering a transparent, jetted sheet of coagulating liquid equally and uniformly along each side of the warp.... | 02/06/1990 |
| 4876040 | Two-stage process for preparing aromatic polyamide fiber A process for preparing aromatic polyamide fibers wherein an aromatic diamine and an aromatic diacidchloride are dissolved in an amide polymerization solvent containing an inorganic salt, a partial polymerization is effected at a low temperature to form a... | 10/24/1989 |
| 4865902 | Multilayered polyolefin high shrinkage, low-shrink force shrink film A multi-layered, heat shrinkable film is disclosed which possesses one or two outer layers of a polyolefin and a core layer of material having a melting point below the temperature required to orient the material of the outer layer or layers, the core lay... | 09/12/1989 |
| 4836507 | Aramid staple and pulp prepared by spinning Directly spinning highly oriented staple fibers of para-aramids using a dry-jet wet-spinning process in which the filaments in the gap between the spinneret and the coagulating fluid are attenuated with a liquid jetted symmetrically about the filaments at... | 06/06/1989 |
| 4728473 | Process for preparation of polyparaphenylene terephthalamide fibers A process for the preparation of poly-p-phenylene terephthalamide fibers according to the wet spinning method comprising passing an optically anisotropic solution of a poly-p-phenylene terephthalamide type polymer through a non-coagulating fluid layer and... | 03/01/1988 |
| 4391875 | Asbestos products of improved physical properties having metal oxides on the surfaces thereof The abrasion resistance and tensile strength of asbestos is significantly improved by the addition of significant amounts of metal oxides, such as iron oxide, under conditions to provide at least some surface bonding of the oxides to the surface of the as... | 07/05/1983 |
| 4340559 | Spinning process Improved aromatic polyamide fibers from aromatic polyamides whose chain-extending bonds are either coaxial or parallel and oppositely directed are obtained by dry spinneret wet spinning into a shallow coagulating bath having an orifice in its bottom for r... | 07/20/1982 |
| 4298565 | Spinning process A process for preparing high strength, high modulus aromatic polyamide filaments by extruding an acid solution containing at least 30 g. per 100 acid of an aromatic polyamide having an inherent viscosity of at least 4 and chain extending bonds which are e... | 11/03/1981 |
| 4274900 | Multi-layer polyester/polyolefin shrink film The multi-layer polyester/polyolefin shrink film of this invention provides a combination of shrink tension, hot seal strength, sealability, and shrink temperature range heretofore unobtainable in an oriented, monolayer polyolefin material. The preferred ... | 06/23/1981 |
| 4261943 | Process for surface treating cellulose products This invention relates to a process for treating the surface of cellulosic shaped products such as fibers, films filaments, yarns and the like, formed from a spinning dope of a solution of cellulose in amine oxide, by applying to the surface of the produc... | 04/14/1981 |
| 4159299 | Method for the production of rayon A method and apparatus for the production of rayon and for the continuous processing of filaments is disclosed. Filament threads are formed in a spinning column in which they are completely regenerated and stretched by the action of a constant temperature... | 06/26/1979 |
| 4154856 | Method for stretching a coagulable extrudate Stretched fibers or fibrils from single-cell dopes are prepared by extruding the dope into a moving coagulating bath wherein the fluid motion of the bath causes the extrudate to gradually stretch. The resultant stretched fibers are useful as textured food... | 05/15/1979 |
| 4115991 | Asbestos products Coherent strands are made from a dispersion of asbestos fibres in an aqueous soap solution containing up to 100 percent molar excess of fatty acid, by a process including the steps of forming a stream of dispersion and chilling the newly formed stream suf... | 09/26/1978 |
| 4078034 | Air gage spinning process The strength of aromatic polyamide filaments spun at high speed downwardly through a non-coagulating fluid into a liquid coagulating bath and subsequently through a spin tube containing the freshly spun filaments and coagulating liquid is improved when th... | 03/07/1978 |
| 4070431 | Improved yarn extraction process The salt content of neutralized aromatic polyamide fibers spun from an acid solution downwardly into a spin tube containing the fibers and a coagulating liquid is reduced when a gas is injected into the spin tube 0.25 to 20 cm. downstream from the entranc... | 01/24/1978 |
| 4064296 | Heat shrinkable multi-layer film of hydrolyzed ethylene vinyl acetate and a cross-linked olefin polymer A heat shrinkable multi-layer packaging film having a layer of a hydrolyzed ethylene-vinyl acetate copolymer. Preferably, the film is formed by coextruding the hydrolyzed ethylene-vinyl acetate copolymer layer between two other polymeric layers, at least ... | 12/20/1977 |
| 3996321 | Level control of dry-jet wet spinning process In a process for forming fibers by extruding a spinning dope successively through a layer of inert gas and a tube immersed in a coagulating bath, the tension profile of the yarn passing through the tube is regulated by regulating the pressure of the layer... | 12/07/1976 |
