Bizarre Patents
A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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 |
| 7160503 | Metal matrix composites of aluminum, magnesium and titanium using silicon hexaboride, calcium hexaboride, silicon tetraboride, and calcium tetraboride A metal matrix composite was fabricated by adding particles of calcium hexaboride to a metal of aluminum, magnesium or titanium and their alloys. The resulting metal matrix composite is light weight has improved strength, increased elastic modulus and reduced therma... | 01/09/2007 |
| 7153375 | Precious metal solder Platinum, silver and gold solder compositions for repairing, assembling, or sizing jewelry. Platinum compositions having about 90% to about 95% by weight platinum. Silver compositions having at least 92.5% by weight silver. Gold solder compositions having about 25% ... | 12/26/2006 |
| 7041251 | Dental casting alloy To improve the fracture resistance of a dental casting alloy without giving rise to undue hardness thereof it is proposed that the dental casting alloy substantially consists of | 05/09/2006 |
| 6994550 | Vapor deposited titanium and titanium-nitride layers for dental devices A coating for a biomedical device is disclosed, including a metal layer and/or a ceramic layer, such as a layer of titanium (Ti) and a layer of titanium-nitride (TiN). The coating can form a coping for a crown for a tooth, the crown including a porcelain layer bonde... | 02/07/2006 |
| 6626672 | Dental prosthesis and method An alloy and method is disclosed for forming an improved dental prosthesis. The invention relates to a dental material of a precious metal composition and a method for infiltrating one alloy with another to produce a substructure for ceramic prosthetic re... | 09/30/2003 |
| 6613273 | Method for the manufacture of dental restorations Dental restorations are fabricated using metal powder. Preferably, the metal powder is a high fusing metal and preferably, the metal powder comprises a non-oxidizing metal. The metal powder is applied to a die and is covered with a covering material such ... | 09/02/2003 |
| 6426149 | Ceramic structure and method for manufacturing the structure A ceramic structure where a gold foil or a platinum foil having a high purity is enclosed between a first layer made of a ceramic material fused at a medium temperature or a glass material (glass substance) and a second layer made of a ceramic material fu... | 07/30/2002 |
| 6290501 | Silver-palladium alloys for producing a dental prosthesis which can be covered with dental ceramic The invention relates to silver-palladium alloys for the manufacture of dental prostheses which can be faced with dental ceramic. Because of selected contents of the alloy elements indium, tin and zinc, these cause no discolorations when combined with low-melt... | 09/18/2001 |
| 6213776 | Precious metal bonding composition A bonding material for joining a polymeric veneering material or porcelain ceramic to a metal framework of a dental restoration or dental prosthesis before sintering the porcelain at a suitable temperature to form a clinically unbreakable structure. The b... | 04/10/2001 |
| 6103383 | High tungsten, silicon-aluminum dental alloy A new nickel-chromium alloy having high rigidity, castability, corrosion and oxidation resistance and easy workability is disclosed. The alloy comprises from about 45 to 81% nickel by weight, from about 13 to 25% chromium by weight, from about 3 to 15% tu... | 08/15/2000 |
| 5922276 | Gold alloy for porcelain/metal dental restorations A dental alloy is provided for use in porcelain-fused-to-metal dental restorations, which has an excellent oxide color and which can be cast and recast without deleterious effect, which comprises at least 99.5 wt. % gold, 0.1-0.25 wt. % zinc, 0.1-0.25 wt.... | 07/13/1999 |
| 5852248 | Method for accurate replication of shaped articles using sinterable powders Shaped article replicas which are proportionately accurate replicas of a shaped article and which are equal, greater or smaller in size than said shaped article are made by preparing a swellable polymer cavity mold from said shaped article; immersing said... | 12/22/1998 |
| 5849417 | Titanium implantation materials for the living body Implantation materials for the living body comprising: 10 to 4000 ppm of gaseous ingredients combined, mainly composed of oxygen; up to 100 ppm of ingredients other than the gaseous ingredients such as iron; and the balance titanium. An oxide film is form... | 12/15/1998 |
| 5833462 | Precision attachments for dental technology capable of being cast on Precision attachments containing a titanium-containing gold alloy which is covered with a gold film, capable of being cast on, which have a golden yellow color, are extremely corrosion-resistant and, despite base metal constituents, form no oxides at the ... | 11/10/1998 |
| 5695714 | Gold-palladium alloys for dental materials Gold-palladium alloys with a high gold content for dental applications should, for reasons of biocompatibility, not contain any toxically dubious components. For particularly corrosion-resistant and biocompatible Type 4 alloys, tin is needed as the only b... | 12/09/1997 |
| 5516355 | Method of preparation of compositions for an amalgam The invention relates to a method of preparing a dental amalgam that is devoid of harmful free mercury, to be used as a filler for dental cavities. In particular the invention relates to processes by which two separate compositions characterized as treate... | 05/14/1996 |
| 5462437 | Dental alloys for composite and porcelain overlays A dental alloy is provided which is compatible with a wide variety of composites and porcelain compositions. The alloy has a melting range of between about 870° C. and 1230° C. and a coefficient of thermal expansion of between 15.5×10-6 and ... | 10/31/1995 |
| 5453290 | Dental procelain, a method of producing a dental restoration, a dental alloy A system for dental restorations comprising dental alloys for the manufacture of a substructure of the restoration and dental porcelains for coating the substructure. The porcelains have a relatively high thermal expansion coefficient, above 14.5 μm/m.°... | 09/26/1995 |
| 5431875 | Dental alloy producing light oxides A precious metal alloy for dental restorations which develops a light oxide upon firing, on a percentage weight basis at makeup, consists of 60-95 precious metal(s) selected from the group consisting of 60-855 palladium, 0-10 gold, 0-10 platinum, 0-12 sil... | 07/11/1995 |
| 5423680 | Palladium, gallium and copper-free alloy having high thermal expansion coefficient A dental alloy is provided which is free of palladium, gallium and copper and which is compatible with a wide variety of composites and porcelain compositions. The alloy has a melting range of between about 870° C. and 1230° C. and a coefficient of ther... | 06/13/1995 |
| 5362438 | Powder of dental metal, a process for the preparation thereof, a process for the manufacture of a substructure for a dental restoration and a process for the manufacture of a dental restoration This invention relates to a powder substantially of dental metal, which powder is suitable for the manufacture of a dental restoration such as a crown or a bridge, comprising a substructure of dental metal and a fired on coating of a dental ceramic materi... | 11/08/1994 |
| 5338378 | Dental gold alloy with age-hardenability at intraoral temperature A dental gold alloy which is soft enough for adjustment of a patient's occlusal condition, which is age-hardenable with passage of time at temperatures encountered within a patient's oral cavity, and which has a single phase structure which imparts improv... | 08/16/1994 |
| 5314109 | Brazing alloy and method of brazing A method of joining orthodontic appliances or dental appliances by brazing with an alloy material containing at least about 50% by weight silver and at least about 20% by weight gold.... | 05/24/1994 |
| 5227131 | Metal alloy for cast prosthetic frames in dentistry A metal alloy for cast prosthetic frames in dentistry, consisting of (in % by weight) ______________________________________ 0.1 to 0.3 % C up to 1.5 % Si up to 3 % Mn 25 to 35 % Cr ... | 07/13/1993 |
| 5221207 | Yellow dental alloy with a high gold content A yellow dental alloy is disclosed with high gold content for castings and ceramic veneers with an adjusted thermal expansion coefficient that does not produce any undesirable discoloration of the ceramic veneers and that is very hard. It contains 70 to 8... | 06/22/1993 |
| 5186626 | Metal-porcelain dental bridges A dental prosthetic device is provided comprising a coping adapted to be placed on at least one abutment tooth to an edentulous region. A pontic metal substructure adapted to be joined to the coping and a ceramic buildup to fill the edentulous region are ... | 02/16/1993 |
| 5174954 | Palladium alloys for dental implant restorations The present invention relates to alloys containing about 50-90% palladium, 0-37% gold, 0-3% platinum, 0-35% silver, 0.5-8% gallium, 0-8% tin, and up to 0.2% of a grain refiner selected from the group consisting of iridium, rhenium and ruthenium, or mixtur... | 12/29/1992 |
| 5143692 | Method of making a substructure for a dental restoration A method of making a substructure for a dental restoration which comprises a substructure of a dental metal and a fired on coating of a dental ceramics, which method comprises applying a powder-form mixture of a dental metal powder and a thermoplastic pol... | 09/01/1992 |
| 5064731 | Dental prostheses A dental prosthesis comprises an inner layer portion and an outer layer portion. The outer layer portion is a dental porcelain material, while the inner layer portion is a sintered product which, after sintering, is composed of: (i) 40 to 95% by weight of... | 11/12/1991 |
| 5039574 | Dental prosthesis with cobalt alloy frame The invention concerns a ceramically coated dental prosthesis in which the metal frame comprises an alloy containing, each in percent by weight: 0 to 0.4 carbon, 0.1 to 5.0 silicon, 0.01 to 8.0 manganese, 25 to 35 chromium, 1.0 to 8.0 molybdenum, 0.1 to 5... | 08/13/1991 |
| 5011311 | Dental alloy A dental alloy consists essentially of 60 to 85% by weight palladium, 5 to 20% by weight copper, 3 to 15% by weight gallium, and, as modifiers, 0.5 to 7% by weight gold, 0.005 to 0.02% by weight ruthenium, rhenium, iridium or a mixture of at least two of ... | 04/30/1991 |
| 4997723 | Metal-porcelain dental restorations, dental veneers, dental bridges and metal foil for use therein and methods for making dental appliances A metal foil is provided for use in a metal-porcelain dental restoration, which metal foil provides improved color qualities to the finished restoration and improved bonding of the metal to the porcelain. The metal foil is made of an alloy comprising a ma... | 03/05/1991 |
| 4980124 | Dental restoration and method for its production An improvement is provided in the so-called "Foil" system for producing jacketed porcelain dental crowns. One of the most significant improvements is the formation of a crush-resistant coping comprised of a die-conforming noble metal foil and a bonded sin... | 12/25/1990 |
| 4943483 | Palladium alloy containing gold, silver, gallium, germanium and/or lithium and dental restorations utilizing same Dental restorations are made of a high palladium alloy which consists essentially of, on a weight basis, 70-82 percent palladium; 5-8 percent gold; 6.5-8 weight percent silver; 5-9 percent gallium; from 4 to 8 weight percent of a surface oxide producing m... | 07/24/1990 |
| 4929420 | Alloy useful particularly in dentistry The invention provides an alloy useful particularly in dentistry. The alloy of the invention in its broadest aspect contains from about 0.05 to about 8% by weight of indium and from about 8 to about 20% by weight of iridium, the balance essentially being plati... | 05/29/1990 |
| 4879136 | Method of applying opaque dental ceramic material to a metal structure A method of building a dental appliance and a kit for use in the method are provided. In the method, metal copings are coated with an opaque ceramic paste, and a coarse ceramic powder, having structural stability under the conditions needed to fire the ce... | 11/07/1989 |
| 4836984 | Dentures and alloys for use in same Palladium alloys consisting of (a) 65 to 85% palladium, (b) 0 to 10% gold and/or 0 to 5% platinum, (c) 0.1 to 10% tin, (d) 1 to 10% gallium, (e) 1 to 12% copper, (f) 0.05 to 1.5% ruthenium and/or 0.05 to 0.7% rhenium as well as (g) 0.01 to 4% tungsten and... | 06/06/1989 |
| 4830824 | Dental alloy castings and method An alloy for producing dental castings comprises 26.5 to 27.5% Cr, 4.5 to 5.5% Mo, 0.65 to 0.8% Mn, 0.4 to 0.5% Si, up to 1% Fe, up to 0.05% C, and the balance Co.... | 05/16/1989 |
| 4814008 | Dental material A dental material of a metal composition for reinforcing the metal framework of a dental restoration comprising an aggregate combination of metal particles including a first high fusing temperature precious metal component and a second low fusing temperat... | 03/21/1989 |
| 4812288 | Non precious nickel based chromium containing alloy for dental prostheses A Ni-Cr based alloy not containing precious metals has been developed for prosthetic dentistry uses. The alloy is characterized by high hardness, good workability, high corrosion resistance and optimal adherence to ceramic materials, and consists essentia... | 03/14/1989 |
