William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8168151 | Organic/inorganic composite biomaterials and process for producing the same This invention provides organic/inorganic composite biomaterials constituted by composites of hydroxyapatite and collagen and having an average fiber length of 60 μm or longer, and a process for producing the same in which the calcium ion and phosphate ion concentr... | 05/01/2012 |
| 8129072 | Ion-conducting ceramic apparatus, method, fabrication, and applications A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor ... | 03/06/2012 |
| 7943269 | Ion-/proton-conducting apparatus and method A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor ... | 05/17/2011 |
| 7906093 | Method of synthesizing zirconium phosphate particles Zirconium phosphate particles are synthesized by providing a solution of zirconium oxychloride in an aqueous solvent, adding at least one oxygen-containing additive to the solution, the oxygen-containing additive being selected to form a complex with zirconium ions ... | 03/15/2011 |
| 7901650 | Porous beta-tricalcium phosphate and methods for producing the same Methods are provided for producing porous β-Tricalcium Phosphate (β-TCP). In the subject methods, β-TCP is combined with graphite to produce an intermediate greenware product. The intermediate greenware product is then sintered to produce porous β-TCP. The subje... | 03/08/2011 |
| 7875255 | Nanoparticles comprising calcium phosphate and ethylene imine compositions and methods of production thereof Highly dispersible inorganic compound nanoparticles modified by functional molecules include the functional molecules; a high molecular nitrogen compound having at least two amino groups selected from primary amino groups, secondary amino groups and tertiary amino g... | 01/25/2011 |
| 7846411 | Calcium peroxyphosphates and use thereof in dental compositions Calcium peroxyphosphate compounds and dental compositions comprising these compounds that combine both whitening/stain removal of teeth with remineralization are disclosed. The calcium peroxyphosphate compounds are capable of releasing, in an aqueous environment, wh... | 12/07/2010 |
| 7767179 | Method for producing adsorbent, adsorbent, and adsorption apparatus A method for producing an adsorbent which is stable toward a liquid such as an eluant and which shows excellent reproducibility in selectively adsorbing and separating an object compound, the method includes the steps of: preparing a base material having a surface, ... | 08/03/2010 |
| 7468172 | Hydroxapatite calcium phosphates, their methods of preparation and their applications The present invention is directed to calcium phosphates in granular form having an X-ray diffraction pattern characteristic of hydroxyapatite in which a portion of the anions of the crystal lattice are substituted with carbonate anions and which have good compressib... | 12/23/2008 |
| 7416803 | Solid acid electrolytes for electrochemical devices Improved solid acid electrolyte materials, methods of synthesizing such materials, and electrochemical devices incorporating such materials are provided. The stable electrolyte material comprises a solid acid capable undergoing rotational disorder of oxyanion groups... | 08/26/2008 |
| 7390335 | Nanostructured bioactive materials prepared by spray drying techniques Nano-particles of calcium and phosphorous compounds are made in a highly pure generally amorphous state by spray drying a weak acid solution of said compound and evaporating the liquid from the atomized spray in a heated column followed by collection of the precipit... | 06/24/2008 |
| 7385803 | Tetravalent metal acid triphosphates This invention is based on the preparation of new solid acid triphosphates with compositions of the general formula M(IV)(HPO4)(H2PO4)2, where M(IV) is a tetravalent metal or a mixture of tetravalent metals. These compounds are insoluble in water the greater part of... | 06/10/2008 |
| 7374740 | Process for producing high purity phosphates Phosphate rock is reacted with phosphoric acid to produce monobasic calcium phosphate. Monobasic calcium phosphate is reacted with ammonium carbonate to produce ammonium phosphate. Dibasic calcium phosphate is also produced as a by-product when monobasic calcium pho... | 05/20/2008 |
| 7374739 | Calcium phosphate bone replacement materials and methods of use thereof Methods of making porous calcium phosphate bone replacement materials are discussed. ... | 05/20/2008 |
| 7353228 | Method and product for calculating a net operating income audit and for enabling substantially identical audit practices among a plurality of audit firms Deployment of a computer program including a global NOI audit model together with standards, procedures, documentation, and reporting requirements in interactive, digital form to a plurality of audit firms operating independently of each other and having a reporting... | 04/01/2008 |
| 7326289 | Film containing a photo-catalyst apatite, its formation method, coating liquid, and electronic device having portion coated with photo-catalyst apatite-containing film A film containing a photo-catalyst apatite contains an inorganic coating main material, and a powdered photo-catalyst apatite and powdered titanium oxide that disperse within the inorganic coating main material, in which the total content of the photo-catalyst apati... | 02/05/2008 |
| 7326464 | Calcium phosphate microgranules The invention concerns microgranules produced from calcium phosphate materials. The invention also concerns a method for producing said microgranules. The inventive microgranules are characterized by a very narrow particle size distribution. ... | 02/05/2008 |
| 7320728 | Rod-shaped apatite crystals having a specific length-to-width ratio The rod-shaped apatite crystals of the formula Ca5(PO4)3(OH)xFy have the following features a) the length-to-breadth ratio of the crystals is at least ≧5 and b) x+y=1, where if x or y... | 01/22/2008 |
| 7318841 | Synthesis of calcium phosphates by mechano-chemical process A low crystallinity calcium phosphate powder is prepared by mechanically grinding a calcium phosphate solid under grinding forces local heating sufficient to mechanically alloy the calcium phosphate solid and reduce the crystalline domains of the calcium phosphate s... | 01/15/2008 |
| 7303823 | Method of forming antibacterial layer containing metal-modified apatite A method is provided for forming an antibacterial layer containing a metal-modified apatite. First, an apatite-containing liquid is prepared, which contains both an inorganic coating agent and 0.01˜5 wt % of metal-modified apatite powder. Then, the apatite-containi... | 12/04/2007 |
| 7294187 | Rapid-hardening calcium phosphate cement compositions A bone or dental implant material in the form of a paste includes a mixture of calcium phosphate and/or calcium-containing powders and a solution that is (1) an acidic calcium phosphate solution saturated with respect to one or more calcium phosphate compounds, (2) ... | 11/13/2007 |
| 7273596 | Method of producing granulated anhydrous dicalcium phosphate A new and useful method of simultaneously producing and granulating anhydrous dicalcium phosphate is provided. Such a method entails the reaction of concentrated phosphoric acid with a powdered material of lime and/or calcium carbonate in substantially equal stoichi... | 09/25/2007 |
| 7255962 | Eulytite solid acid electrolytes for electrochemical devices Improved solid acid electrolyte materials, methods of synthesizing such materials, and electrochemical devices incorporating such materials are provided. The stable electrolyte material comprises a solid acid in a eulytine structure capable of undergoing rotational ... | 08/14/2007 |
| 7247288 | Method of manufacturing hydroxyapatite and uses therefor in delivery of nucleic acids Provided is a method for production of nanocrystalline hydroxyapatite particles, and nanocrystalline hydroxyapatite particles produced according to the method. The nanocrystalline hydroxyapatite particles exhibit substantially superior cell transformation abilities ... | 07/24/2007 |
| 7223420 | Powder mixture for resorbable calcium phosphate biocements The present invention relates to a powder mixture for resorbable calcium phosphate biocements, which mixture consists of 40–99% by volume of powder having a particle size of 0.1–10 μm, 1–20% by volume of powder having a particle size of 10–43 μm and 0–59... | 05/29/2007 |
| 7204971 | Shaped microcomponents via reactive conversion of biologically-derived microtemplates The present invention is focused on a revolutionary, low-cost (highly-scaleable) approach for the mass production of three-dimensional microcomponents: the biological reproduction of naturally-derived, biocatalytically-derived, and/or genetically-tailored three-dime... | 04/17/2007 |
| 7192450 | Porous membranes for use with implantable devices A membrane for implantation in soft tissue comprising a first domain that supports tissue ingrowth, disrupts contractile forces typically found in a foreign body response, encourages vascularity, and interferes with barrier cell layer formation, and a second domain ... | 03/20/2007 |
| 7182937 | Anhydrous dentrifice formulations for the delivery of incompatible ingredients A composition for reducing dentinal hypersensitivity and remineralizing exposed dentinal surface and open dentinal tubules, comprising a non-aqueous carrier and a desensitizing amount of a desensitizing/remineralizing agent which consists essentially of a water solu... | 02/27/2007 |
| 7175858 | Calcium phosphate cements and methods for using the same Methods and compositions for producing flowable compositions, e.g. pastes, that set into calcium phosphate products are provided. In the subject methods, dry reactants that include a calcium source and a phosphate source are combined with setting fluid to produce th... | 02/13/2007 |
| 7169372 | Method for producing nano-sized crystalline hydroxyapatite A mechanism and technological process for synthesizing nano-sized crystalline hydroxyapatite. In particular, for producing nano-sized crystalline hydroxyapatite whose particles have nano dimensions in length “l”, width “d” and thickness “h”, wherein “h... | 01/30/2007 |
| 7163651 | Method for making a porous calcium phosphate article The present invention discloses a method for making a porous calcium phosphate article including i) preparing a shaped article from a paste containing a calcium phosphate cement, a pore-forming powder and a setting liquid; ii) immersing the shaped article in an imme... | 01/16/2007 |
| 7157027 | Dual function prosthetic bone implant and method for preparing the same The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blo... | 01/02/2007 |
| 7153482 | Rod shaped apatite crystals having a specific length-to-width ratio The rod-shaped apatite crystals of the formula Ca5(PO4)3(OH)xFy have the following features a) the length-to-breadth ratio of the crystals is at least ≧5 and b) x+y=1, where if x or y... | 12/26/2006 |
| 7150879 | Neutral self-setting calcium phosphate paste The present invention provides a novel process for producing a calcium phosphate cement or filler which hardens in a temperature dependent fashion in association with an endothermic reaction. In the reaction a limited amount of water is mixed with dry calcium phosph... | 12/19/2006 |
| 7150862 | Method of manufacturing powder A method of manufacturing a powder, by which it is possible to adjust the strength of the obtained powder is provided. The manufacturing method of a powder involves a step of preparing a slurry containing agglomerated particles of a synthetic material which is produ... | 12/19/2006 |
| 7134999 | Optimized sensor geometry for an implantable glucose sensor An implantable sensor for use in measuring a concentration of an analyte such as glucose in a bodily fluid, including a body with a sensing region adapted for transport of analytes between the sensor and the bodily fluid, wherein the sensing region is located on a c... | 11/14/2006 |
| 7128856 | Dual function prosthetic bone implant and method for preparing the same The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blo... | 10/31/2006 |
| 7122138 | Dual function prosthetic bone implant and method for preparing the same The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blo... | 10/17/2006 |
| 7122139 | Dual function prosthetic bone implant and method for preparing the same The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blo... | 10/17/2006 |
| 7122140 | Dual function prosthetic bone implant and method for preparing the same The present invention discloses a prosthetic bone implant made of a hardened calcium phosphate cement having an apatitic phase as a major phase, which includes a dense cortical portion bearing the majority of load and a porous cancellous portion allowing a rapid blo... | 10/17/2006 |