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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8187522 | Method and apparatus for producing a three-dimensionally shaped object, and three dimensionally shaped object A method for producing a three-dimensionally shaped object, includes the steps of: (i) forming a solidified layer by irradiating a light beam on a specified portion of a powder layer placed on a shaping table to sinter or melt the specified portion; (ii) forming ano... | 05/29/2012 |
| 8178033 | Method and apparatus for rapidly generating aerospace tools A method and apparatus may be present for manufacturing. A shell may be formed having a support structure located in a cavity in which the shell and the support structure may be formed using an additive manufacturing system from a design of a tool. The cavity of the... | 05/15/2012 |
| 8137609 | Apparatus and method for cooling part cake in laser sintering A part cake defining a build produced by laser sintering and the surrounding unfused powder is contained in an enclosure, and the enclosure includes displaceable wall portions for compressing the part cake to support the build against distortion during rapid cooling... | 03/20/2012 |
| 8114334 | Laser sintering processes using thermoplastic compositions A method of laser sintering a thermoplastic composition to provide an article of manufacture having a plurality of sintered layers is disclosed. The thermoplastic composition has a relatively high melting point and a small particle size. The articles of manufacture ... | 02/14/2012 |
| 8057731 | Process of fabricating three-dimensional object A light beam is irradiated to sinter powder layers into a plurality of cured layer which are superimposed to each other to fabricate a three-dimensional object. A portion forming an outer shell of the object is given by high-density cured layers, while the other por... | 11/15/2011 |
| 7988906 | Three-dimensional layer-by-layer production process with powders based on cyclic oligomers A process for the production of moldings via a layer-by-layer process by selectively melting regions of one or more powder layers that contain cyclic oligomers and have a median grain diameter determined by laser diffraction of between 25 and 150 μm via input of el... | 08/02/2011 |
| 7887740 | Composite powder, use in a shaping process, and mouldings produced from this powder The present invention relates to a composite powder of polymer powder and porous glass beads, and to the use of this composite powder for shaping processes, and also to mouldings produced from this composite powder. ... | 02/15/2011 |
| 7833465 | Arrangement and method for producing a three-dimensional product A method and arrangement for production of three-dimensional bodies by successive fusing together of selected areas of a powder bed, which parts correspond to successive cross sections of the three-dimensional body, which method comprises the following method steps:... | 11/16/2010 |
| 7794647 | Method of selective laser sintering with improved materials A method of providing improved powder materials for selective laser sintering (SLS). and related sintering including High Speed Sintering and Selective Inhibition Sintering, processing by orienting a polymer material. The improved materials increase the melting temp... | 09/14/2010 |
| 7790096 | Thermal management system for a removable build chamber for use with a laser sintering system A thermal management system is provided to control the preheating and cool down of a removable build chamber in a laser sintering system. A thermal management station controls preheating of a removable build chamber to heat the chamber to a temperature at or near th... | 09/07/2010 |
| 7754137 | Process for fabricating a composite The present invention relates to a process for fabricating a composite functional body/substrate, either by melting with an energy beam or by spin coating. The functional material is preferably a piezoelectric material (PVDF). The energy beam is preferably a laser b... | 07/13/2010 |
| 7575708 | Direct manufacture of aerospace parts A process of fabricating aerospace parts using selective laser sintering is provided, wherein the process generally comprises the steps of preparing a powder nylon material, loading the powder nylon material into a laser sintering machine, warming up the powder nylo... | 08/18/2009 |
| 7569174 | Controlled densification of fusible powders in laser sintering The invention relates to a method producing parts using laser sintering wherein a fusible powder is exposed to a plurality of laser scans at controlled energy levels and for time periods to melt and densify the powder and in the substantial absence of particle bondi... | 08/04/2009 |
| 7537722 | Device and arrangement for producing a three-dimensional object A device for manufacturing a three-dimensional product, which device comprises a work table on which said three-dimensional product is to be built, a powder dispenser which is arranged to lay down a thin layer of powder on the work table for the formation of a powde... | 05/26/2009 |
| 7531123 | Direct manufactured self-contained parts kit A self-contained parts kit is created by forming a container around parts formed using a direct manufacturing process. The formation of the container is part of the same process by which the parts are formed. The container can be formed with one or more openings by ... | 05/12/2009 |
| 7517488 | Method of forming a chemical mechanical polishing pad utilizing laser sintering The present invention provides a method of manufacturing a porous chemical mechanical polishing pad comprising focusing a laser beam from a laser into a sintering nozzle and injecting the fluidized thermoplastic particles into the sintering nozzle via an injection p... | 04/14/2009 |
| 7438838 | Polymeric optical waveguide-forming master plate, method for producing polymer optical waveguide, and aperture changeable polymeric optical waveguide The invention relates to a method for producing a polymeric optical waveguide-forming master plate, comprising: laying a thread which does not transmit rays used for subsequent exposure on a substrate for a master plate, applying a positive resist material onto the ... | 10/21/2008 |
| 7419632 | Method and device for the production of a three-dimensional object by means of sintering A process and a device for producing a three-dimensional object is provided, with which process or device the object is produced by layer-wise solidification of a pulverulent material by sintering of the material at the points corresponding to the cross-section of t... | 09/02/2008 |
| 7357629 | Apparatus and method for aligning a removable build chamber within a process chamber The invention is a rapid prototype apparatus having a removable build chamber and a plurality of alignments surfaces that can be used to properly align the build chamber with the process chamber with minimal adjustments by a user. In one embodiment, the apparatus co... | 04/15/2008 |
| 7351051 | Powder sinter layered manufacturing apparatus A powder sinter layered manufacturing apparatus is provided with a first container 13 of a cylindrical shape for defining a first manufacturing region, a first manufacturing table 15 configured to move vertically along an inner wall of the first contai... | 04/01/2008 |
| 7342218 | Methods and systems for optical inspection of surfaces based on laser screening A method for imaging and an imaging system, the system includes the steps of: (i) scanning a beam of coherent radiation over a surface along a scan axis; (ii) focusing the beam to a spot on the surface, so that the spot has a predetermined dimension along the scan a... | 03/11/2008 |
| 7329379 | Method for solid freeform fabrication of a three-dimensional object A method for creating a three-dimensional solid freeform fabrication object with phase-change material includes depositing a bulk amount of phase-change material in a defined region, selectively ink-jetting an ultraviolet initiator onto a predetermined area of the p... | 02/12/2008 |
| 7323132 | Method of making three-dimensional object The invention relates to a method of making a three-dimensional object, comprising the steps of: (a) forming a powder material layer (10) of inorganic material; (b) irradiating an optical beam (L) on a prede... | 01/29/2008 |
| 7312269 | Mixture of sinterable powders for rapid prototyping A mixture of sinterable powders for rapid prototyping, comprising a powdered polymer base and material of a substantially glassy type in the form of microflakes, optionally with the addition of a material of a substantially glassy type in the form of microspheres, p... | 12/25/2007 |
| 7291242 | Methods for reduction of powder waste in selective inhibition of sintering (SIS) Disclosed are methods and systems for selective inhibition of sintering in 3D fabrication. The disclosure provides methods and systems that use selective heating arrangements to selectively sinter areas during fabrication thereby reducing waste improving efficiency.... | 11/06/2007 |
| 7285234 | Process and device for producing solid bodies by sequential layer buildup Process for layer-wise production of a three dimensional body (generative rapid prototyping), in particular by 3D binder printer, including a multiple succession of the steps of depositing a powder particle layer, activating in defined areas an adhesive present on t... | 10/23/2007 |
| 7261541 | Cooling techniques in solid freeform fabrication A cooling system for removing heat from the layers of a three-dimensional object built in a layerwise manner from a build material in a solid freeform fabrication apparatus. The cooling system provides an air duct that delivers a uniform sheet of air flow over the l... | 08/28/2007 |
| 7255830 | Method of making a three-dimensional sintered product To make a three-dimensional object, an optical beam is first irradiated on a predetermined portion of a powder layer to form a sintered layer, which is then covered with a new powder layer. The optical beam is again irradiated on a predetermined portion of the new p... | 08/14/2007 |
| 7244323 | Method and materials to inhibit object consolidation in localized areas Materials and methods inhibit the localized build-up of material with respect to certain additive manufacturing processes, including those based on ultrasonic consolidation. Where an object is fabricated by consolidating material increments from a feedstock in accor... | 07/17/2007 |
| 7241415 | Metallic parts fabrication using selective inhibition of sintering (SIS) A selective inhibition of sintering (SIS) technique may be used to fabricate a three-dimensional (3-D) dense metal object from a binderless metal powder. Layers of metal powder are provided on a build tank. For each layer, regions of the layer are sinter-inhibited, ... | 07/10/2007 |
| 7229272 | Device for treating powder for a device which produces a three-dimensional object device for producing a three-dimensional object and method for the production thereof A device for treating powder for a device for producing a three-dimensional object by means of a generative manufacturing process, in particular by means of laser sintering, is provided, having a supply container (1) for the powder with a base (2) and ... | 06/12/2007 |
| 7229586 | Process for tempering rapid prototype parts A rapid prototype tempering process comprises producing a rapid prototype part from a base material, creating voids in the rapid prototype part, and filling the voids with a filler material that changes at least one characteristic of the prototype part. The rapid pr... | 06/12/2007 |
| 7211615 | Polyamide powder with long-lasting, consistently good flowability A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is... | 05/01/2007 |
| 7172724 | Method of making sintered object In order for a surface of a three-dimensional sintered object to be smoothly finished by removing unwanted portions and an excessively sintered growth formed during sintering to form sintered layers, the three-dimensional sintered object is formed by repeating succe... | 02/06/2007 |
| 7168935 | Solid freeform fabrication apparatus and methods An apparatus for formation of a three dimensional object comprising a sealed container; an electron beam subsystem capable of directing energy within said container; a positioning subsystem contained within said container; a wire feed subsystem contained within said... | 01/30/2007 |
| 7153463 | Device for treating powder for a device which produces a three-dimensional object device for producing a three-dimensional object and method for the production thereof A device for treating powder for a device for producing a three-dimensional object by means of a generative manufacturing process, in particular by means of laser sintering, is provided, having a supply container (1) for the powder with a base (2) and ... | 12/26/2006 |
| 7149283 | Method for producing and applying an antiscatter grid or collimator to an x-ray or gamma detector A method is for producing and applying an antiscatter grid or collimator to an x-ray or gamma detector having matricially arranged detector elements which form a detector surface with detection regions sensitive to x-radiation and/or gamma radiation and less sensiti... | 12/12/2006 |
| 7141207 | Aluminum/magnesium 3D-Printing rapid prototyping A 3D Printing Rapid Prototyping process using Al/Mg particles coated with a metal (i.e. copper, nickel, zinc, or tin) that (1) prevents oxidation of the Al/Mg particles, and (2) either alone, or when alloyed with the aluminum or magnesium core metal, melts below the... | 11/28/2006 |
| 7134879 | Anisotropic conductive material body, display apparatus, method for producing the display apparatus, and conductive member An anisotropic conductive material body includes an insulating medium; and a plurality of conductive members dispersed in the medium. At least a surface of each of the plurality of conductive members is conductive. A force is applied to at least one of the plurality... | 11/14/2006 |
| 7135525 | Laser-sintering powder with PMMI, PMMA, and/or PMMI-PMMA copolymers, process for its preparation, and moldings produced from this laser-sintering powder The present invention relates to a sinter powder composed of polyamide which also comprises PMMI, PMMA, or copolymers with PMMI, in particular PMMI-PMMA copolymers, to the use of this sinter powder for laser-sintering, and also to moldings produced from this sinter ... | 11/14/2006 |
