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| Number | Title | Issue Date |
| 7939007 | Ceramics based on lanthanum-doped barium titanate, method of preparation and uses The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an... | 05/10/2011 |
| 7392581 | Method for manufacturing a magnetic element A plate member includes a frame portion (51) provided in a state of coupling both one end portion and other end portion and mounting terminal portions (44) protruding from the one end portion and the other end portion of said frame portion (51) ... | 07/01/2008 |
| 7340823 | Methods for forming head suspension assemblies Embodiments include a method for forming a head suspension assembly. A spacer layer is formed in or on a silicon wafer. A transfer film including an opening defining the shape of a slider support membrane is provided, and the opening is filled with a resin material.... | 03/11/2008 |
| 7326381 | Applications of photocurable pre-ceramic polymers A process for fabricating ceramic composites employs a thermoplastic photo-curable pre-ceramic polymer in which the component is shape by a variety of standard composite fabrication techniques, such as filament winding, tape winding, and woven cloth winding. The pro... | 02/05/2008 |
| 7261759 | Powder metal mixture including micronized starch A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch par... | 08/28/2007 |
| 7217386 | Preparation of nanocomposites of alumina and titania High-density composites of alumina and titania with nano-sized grains are prepared from aluminum titanate without the need to use nano-sized powder as a starting material. The preparation is achieved by high-energy ball milling of the aluminum titanate followed by s... | 05/15/2007 |
| 7207424 | Manufacture of carbon/carbon composites by hot pressing A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, a suitable matrix material, such as a milled pitch is compressed while resistively heating the mixture to form a carbonized composite material. Preferably, the carbonized material ha... | 04/24/2007 |
| 7175798 | Cutting tool insert and method for producing the same An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite ... | 02/13/2007 |
| 7160500 | Method of fabricating a micro device The present invention relates to a method of fabricating a micro device, comprising the steps of pressing an upper mold formed with a plurality of recesses for molding a plurality of rods and a lower mold formed with a seat recess for molding a plate supporting the ... | 01/09/2007 |
| 7148480 | Polycrystalline optical window materials from nanoceramics Optical windows for protecting infrared sensing instruments are manufactured from nano-sized crystallites by compressing the crystallites into a continuous mass under high pressure in the presence of a pulsed electric current, preferably one produced by spark plasma... | 12/12/2006 |
| 7138744 | Brush of rotary electric machine A brush to be disposed on a commutator of a dc rotary electric machine includes a high resistance member to be positioned at a front side of the commutator in the rotation direction, a low resistance member to be positioned at a back side in the rotation direction o... | 11/21/2006 |
| 7109642 | Composite piezoelectric apparatus and method The present invention relates to composite piezoelectric apparatus, transducers and methods of manufacture. In an embodiment, a composite piezoelectric apparatus has a sacrificial base and pillar array. Different volume percents of piezoelectric material are used in... | 09/19/2006 |
| 7088550 | Magnetic hard disk recording head with self-compensating thermal expansion A magnetic head for reading information from and writing information to a hard magnetic disk having reduced thermal protrusion at the air bearing surface. In some embodiments, a read-head portion of the magnetic head includes one or more read insulation layers, and ... | 08/08/2006 |
| 7077991 | Nanocomposites of silicon nitride, silicon carbide, and boron nitride Densified composites of silicon nitride, silicon carbide, and boron nitride that exhibit high creep resistance are obtained by sintering a mixture of amorphous powders of silicon nitride, silicon carbide, and boron nitride in the presence of an electric field under ... | 07/18/2006 |
| 7011785 | Process for producing hollow bodies comprising fiber-reinforced ceramic materials Process for producing hollow bodies comprising fiber-reinforced ceramic materials, where mold cores whose shape corresponds to that of the hollow spaces are produced in a first step, at least one mold core together with a press moulding composition or formable fiber... | 03/14/2006 |
| 7011786 | Process for producing shaped bodies comprising fiber-reinforced ceramic materials Process for producing shaped bodies comprising fiber-reinforced ceramic materials, where a green body is produced in a first step by introducing a press moulding composition into a mold, where the press moulding composition comprises carbon fibers and/or carbon fila... | 03/14/2006 |
| 7008573 | Amorphous coke for special carbon material and production process for the same Provided are an amorphous coke for a special carbon material characterized in that it is an amorphous coke obtained by blending a coal tar base heavy oil and/or a petroleum base heavy oil with a resin and subjecting the mixture to thermal decomposition polycondensat... | 03/07/2006 |
| 6955776 | Method for making a dental element The present invention relates to a method for fabricating a functional dental element, such as a crown. According to the invention, use is made of a three-dimensional printing technique. The major advantages of the invention are that no mold is needed anymore, which... | 10/18/2005 |
| 6942729 | High pressure and high temperature apparatus A design for high pressure/high temperature apparatus and reaction cell to achieve ˜30 GPa pressure in ˜1 cm volume and ˜100 GPa pressure in ˜1 mm volumes and 20-5000° C. temperatures in a static regime. The device includes profiled anvils (28) action on... | 09/13/2005 |
| 6925693 | Method of fabricating a piezoelectric/electrostrictive device A method of fabricating a piezoelectric/electrostrictive device including a driving portion, a movable portion, and a fixing portion for holding the driving portion and the movable portion. The driving portion includes a pair of thin plate portions facing each other... | 08/09/2005 |
| 6905649 | High-density barium titanate of high permittivity A nano-sized powder of barium titanate is compacted and sintered by spark plasma sintering under conditions creating a high heating rate to achieve a densified material that demonstrates superior permittivity. ... | 06/14/2005 |
| 6893601 | Surface hardened carbon material and process of manufacturing A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of oxides of boron and boron nitride in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material t... | 05/17/2005 |
| 6878331 | Manufacture of carbon composites by hot pressing A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, a suitable matrix material, such as a milled pitch is compressed while resistively heating the mixture to form a carbonized composite material. Preferably, the carbonized material ha... | 04/12/2005 |
| 6878337 | Process for production of honeycomb structure A process for producing a honeycomb structure, which comprises adding water to a mixed raw material of a raw material powder and a binder, kneading the mixture to obtain a plastic mixture, molding the plastic mixture into a honeycomb shape to obtain a green honeycom... | 04/12/2005 |
| 6858173 | Nanocrystalline ceramic materials reinforced with single-wall carbon nanotubes Composites of ceramic materials, notably alumina or metal oxides in general, with single-wall carbon nanotubes are consolidated by electric field-assisted sintering to achieve a fully dense material that has an unusually high fracture toughness compared to the ceram... | 02/22/2005 |
| 6844378 | Method of using triaxial magnetic fields for making particle structures A method of producing three-dimensional particle structures with enhanced magnetic susceptibility in three dimensions by applying a triaxial energetic field to a magnetic particle suspension and subsequently stabilizing said particle structure. Combinations of direc... | 01/18/2005 |
| 6814917 | Alumina sintered body and process for producing the same A process for producing a polycrystalline alumina sintered body which includes the steps of: subjecting alumina powder to ultrasonic irradiation, mechanical stirring not using a grinding medium, or ultrasonic irradiation and mechanical stirring not using a grinding ... | 11/09/2004 |
| 6780370 | Process for producing microceramic tubes by radiation exposure of silicon-based polymers A process for producing a SiC ceramic microtube by oxidizing the surface of an organosilicon polymer to become infusible by exposure to an ionizing radiation, extracting the uncrosslinked central portion of the fiber with an organic solvent to make a hollow silicon ... | 08/24/2004 |
| 6767499 | Fast prototyping method by laser sintering of powder A succession of superposed digitized sections of an object are produced from a three-dimensional representation of the object. A powder or a mixture of powders is spread in the form of a fine layer and heated to a temperature close to solid phase sintering temperatu... | 07/27/2004 |
| 6725526 | Method of forming microsuspension assemblies for direct access storage devices Embodiments include a method for forming a head suspension assembly. A spacer layer is formed in or on a silicon wafer. A transfer film including an opening defining the shape of a slider support membrane is provided, and the opening is filled with a resin material.... | 04/27/2004 |
| 6699427 | Manufacture of carbon/carbon composites by hot pressing A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, and a suitable matrix material, such as a milled pitch, is compressed while resistively heating the mixture to form a carbonized composite material having a density of abo... | 03/02/2004 |
| 6689305 | Process for consolidating particulate solids and cleaning products therefrom II A bed of particulate solids including some hydrated materials can be converted by controlled irradiation with subinfrared electromagnetic radiation into a unitary porous solid that is mechanically strong enough for easy handling. When the particulate soli... | 02/10/2004 |
| 6635215 | Process for producing silicon carbide composites from silicon-based polymers by radiation application Polycarbosilane is mixed with 5-35 wt % of polyvinylsilane to prepare a silicon-base polymer blend which is impregnated in silicon carbide fibers or fabrics to form a preceramic molding body which is exposed to an ionizing radiation to be rendered curing ... | 10/21/2003 |
| 6620370 | Method for manufacturing opaque rib structures for display panels Plasma addressed liquid crystal display ribs are formed by a method which includes forming a temporary mask on portions of a surface of a substrate, depositing a layer of a glass paste having a curable medium and at least one pigment blended therein over ... | 09/16/2003 |
| 6595819 | Equipment for fabricating partitioning ribs of plasma display device This invention provides equipment for fabricating partitioning ribs of a plasma display device. The equipment comprises a head, a driver, an X position sensor and a Y position sensor, a laser displacement sensor for detecting the distance of the head from... | 07/22/2003 |
| 6592798 | Method for preparing eutectic ceramics A method for advantageously producing sintered eutectic ceramics having a homogenous and dense structure, in particular, a eutectic containing a rare earth aluminate compound. The method allows eutectic powder of alumina and a rare earth aluminate compoun... | 07/15/2003 |
| 6568215 | Method and apparatus for melting a particulate material Apparatus suitable for vitrifying nuclear waste comprises a tunable microwave cavity connected by a first wave guide to a source of microwave energy; cooling coils for cooling the exterior of the cavity; a hopper for loading particulate fusible material t... | 05/27/2003 |
| 6399013 | Method of manufacturing large-scale ceramics board A method of manufacturing large thin wall ceramics board includes pulverizing and uniformly mixing, in dry content conversion, plasticity clay in an amount of 30-40% by weight, wollastonite having an aspect ratio of more than 10 in an amount of 20-50% by ... | 06/04/2002 |
| 6395214 | High pressure and low temperature sintering of nanophase ceramic powders A hot pressing method involves the simultaneous application of high pressure (1.5-8 GPa) at a relatively low temperature (0.2-0.6 Tm) High compaction pressure causes particle deformation, such that the green density increases with pressure up t... | 05/28/2002 |
| 6294125 | Method for changing the dielectric properties of a ceramic matrix composite A method for changing the dielectric properties of a polymer impregnated and pyrolyzed ceramic matrix composite (polymer impregnated and pyrolyzed ceramic matrix composite) is disclosed. The polymer impregnated and pyrolyzed ceramic matrix composite can b... | 09/25/2001 |
