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Class Information
Number: 264/227
Name: Plastic and nonmetallic article shaping or treating: processes > With step of making mold or mold shaping, per se > Utilizing surface to be reproduced as an impression pattern > Forming mold from fluent material > With initial molding or treating of a surface to be reproduced > Developing a surface negative and then a surface positive mold
Description: Processes which includes a formation of a negative of the surface to be reproduced followed by a formation of a positive surface which is to be used itself as a pattern or mold.

Patents under this class:
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Patent Number Title Of Patent Date Issued
6896833 Method of mounting a device in a wall or ceiling May. 24, 2005
6821462 Mass production of shells and models for dental restorations produced by solid free-form fabrication methods Nov. 23, 2004
6818139 Method for forming a micro-pattern on a substrate Nov. 16, 2004
6787087 Method of fabricating a PVC ornamental article having effects of imitated materials Sep. 7, 2004
6782940 Method for rapid reproduction of molds and mold components Aug. 31, 2004
6764631 Method for making a thermoformable liner Jul. 20, 2004
6761789 Method of manufacturing a soft hearing aid Jul. 13, 2004
6730246 Duplication of lost dentures May. 4, 2004
6695943 Method of manufacturing a soft hearing aid Feb. 24, 2004
6692680 Reproduction of micromold inserts Feb. 17, 2004
6656308 Process of fabricating a precision microcontact printing stamp Dec. 2, 2003
6645413 Method for making face masks for reconstructive surgical patients Nov. 11, 2003
6634410 Mold apparatus and method Oct. 21, 2003
6623683 Method for producing human body part prosthesis Sep. 23, 2003
6610230 Method of making mold using elongated metal elements Aug. 26, 2003
6607683 Methods and apparatus for producing manufactured articles having natural characteristics Aug. 19, 2003
6602452 Rotational molding of medical articles Aug. 5, 2003
6599452 Method for manufacturing simulated architectural forms Jul. 29, 2003
6558496 Rapid texture prototyping May. 6, 2003
6491855 Moulding tooling Dec. 10, 2002
6489418 Preparation and application of artificial anti-idiotypic imprints Dec. 3, 2002
6444148 Process and making molds for thermoforming a three-dimensional relief reproduction Sep. 3, 2002
6432247 Method of manufacturing a soft hearing aid Aug. 13, 2002
6379599 Process for the preparation of molecularly imprinted polymers useful for separation of enzymes Apr. 30, 2002
6350558 Method of making decorative panels Feb. 26, 2002
6342178 Replica molding Jan. 29, 2002
6290890 Method for fabricating thermoformed plastic laminate articles Sep. 18, 2001
6224816 Molding method, apparatus, and device including use of powder metal technology for forming a molding tool with thermal control elements May. 1, 2001
6221477 Material and process for producing the same Apr. 24, 2001
6200514 Process of making a bit body and mold therefor Mar. 13, 2001
6177034 Methods for making prosthetic surfaces Jan. 23, 2001
6158497 Method for producing a model and a method for producing a multisection mould using the model Dec. 12, 2000
6129540 Production tool for an abrasive article and a method of making same Oct. 10, 2000
6113836 Method of forming thick film pattern and material for forming thick film pattern Sep. 5, 2000
6110602 Method of making a three-dimensional object Aug. 29, 2000
6086801 Method for forming a breast prosthesis Jul. 11, 2000
6063314 Method for accurate replication of shaped articles using sinterable powders May. 16, 2000
6042759 Method of making molded orthotics Mar. 28, 2000
6019927 Method of casting a complex metal part Feb. 1, 2000
6010655 Method of making a ceramic ornament having short undercuts on surface thereof Jan. 4, 2000
5997796 Implant having integrally-textured, hemocompatible, blood-contacting surfaces and method for producing the same Dec. 7, 1999
5993702 Embossed substrate and photoreceptor device incorporating the same and method Nov. 30, 1999
5993716 Material and process for its preparation Nov. 30, 1999
5989476 Process of making a molded refractory article Nov. 23, 1999
5980232 Golf ball mold, master model and method of making the mold and model Nov. 9, 1999
5976444 Nanochannel glass replica membranes Nov. 2, 1999
5958314 Process for the preparation of porous material Sep. 28, 1999
5942070 Method for insulating a composite pressure vessel having improved adhesiveness between the insulation and the vessel Aug. 24, 1999
5939011 Method for producing a mandrel for use in hot isostatic pressed powder metallurgy rapid tool making Aug. 17, 1999
5891372 Method of making a personalized helmet liner Apr. 6, 1999

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