141 |
Tricalcium phosphate coarse particle compositions and methods for making the same |
US12328720 |
2008-12-04 |
US08409538B2 |
2013-04-02 |
Sahil Jalota; David C. Delaney; Duran N. Yetkinler |
Methods for preparing a tricalcium phosphate coarse particle composition are provided. Aspects of the methods include converting an initial tricalcium phosphate particulate composition to hydroxyapatite, sintering the resultant hydroxyapatite to produce a second tricalcium phosphate composition and then mechanically manipulating the second tricalcium phosphate composition to produce a tricalcium phosphate coarse particle composition. The subject methods and compositions produced thereby find use in a variety of applications. |
142 |
Tricalcium phosphate coarse particle compositions and methods for making the same |
US13153308 |
2011-06-03 |
US08246736B2 |
2012-08-21 |
Sahil Jalota; David C. Delaney; Duran N. Yetkinler |
Methods for preparing a tricalcium phosphate coarse particle composition are provided. Aspects of the methods include converting an initial tricalcium phosphate particulate composition to hydroxyapatite, sintering the resultant hydroxyapatite to produce a second tricalcium phosphate composition and then mechanically manipulating the second tricalcium phosphate composition to produce a tricalcium phosphate coarse particle composition. The subject methods and compositions produced thereby find use in a variety of applications. |
143 |
Hydraulic Cements, Methods and Products |
US13128034 |
2009-11-12 |
US20120022023A1 |
2012-01-26 |
Håkan Engqvist; Jonas Aberg |
Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of a powder composition and a non-aqueous water-miscible liquid. In one embodiment, powder composition is a Brushite or Monetite-forming calcium phosphate powder composition. In another embodiment, the powder composition comprises porous β-tricalcium phosphate (β-TCP) granules and at least one additional calcium phosphate powder. In another embodiment, the powder composition comprises calcium silicate powder. In a further embodiment, the powder composition comprises calcium aluminate powder. In another embodiment, the powder composition is a cement composition and comprises nanopowders having a grain size of less than 1 micron. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions. |
144 |
CALCIUM PHOSPHATE PARTICLES AND HYDRAULIC CEMENTS BASED THEREON |
US12990744 |
2008-05-02 |
US20110041735A1 |
2011-02-24 |
Marc Bohner |
Calcium phosphate particles having A) a specific surface area (SSA) larger than 0.1 m2/g; B) a mean diameter smaller than 5 mm; C) a Ca/P molar ratio superior to 0.95; and wherein D) said particles have been subjected as a last processing step to a heat treatment at a temperature superior to 400° C. for a period of time such that the specific surface area (SSA) of said particles after the heat treatment is not decreased by more than 10% compared to the SSA before said heat treatment. |
145 |
FAST-SETTING, FIBROUS, PORTLAND CEMENT-BASED BUILDING MATERIAL |
US12579747 |
2009-10-15 |
US20100031854A1 |
2010-02-11 |
Dennis Maq Crook; Siti M. Crook |
A fast-setting, fibrous, Portland Cement-based building material is made by soaking wood chips in water to provide substantially saturated wood chips, combining the saturated wood chips with a slurry of Portland cement to provide a wood chip/cement slurry, mixing a slurry of monomagnesium phosphate (“MOP”) with the wood chip/cement slurry to provide a quick-setting MOP/wood chip/cement composition, and compressing the quick-setting MOP/wood chip/cement composition to make the fast-setting, fibrous, Portland Cement-based building material. The inventive composition combines the best properties of cement and wood, yet uses recycled materials to make an environmentally-friendly building material. |
146 |
MAGNESIUM AMMONIUM PHOSPHATE CEMENT COMPOSITION |
US12463880 |
2009-05-11 |
US20090221717A1 |
2009-09-03 |
Michael Zimmermann |
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive. |
147 |
Magnesium ammonium phosphate cement composition |
US11841651 |
2007-08-20 |
US07540914B2 |
2009-06-02 |
Michael Zimmermann |
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive. |
148 |
Magnesium ammonium phosphate cement composition |
US11530835 |
2006-09-11 |
US07431763B2 |
2008-10-07 |
Michael Zimmermann |
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive. |
149 |
Fast-setting, fibrous, portland cement-based building material |
US11811359 |
2007-06-08 |
US20080127862A1 |
2008-06-05 |
Dennis Maq Crook; Siti M. Crook |
A fast-setting, fibrous, Portland Cement-based building material is made by soaking wood chips in water to provide substantially saturated wood chips, combining the saturated wood chips with a slurry of Portland cement to provide a wood chip/cement slurry, mixing a slurry of monomagnesium phosphate (“MOP”) with the wood chip/cement slurry to provide a quick-setting MOP/wood chip/cement composition, and compressing the quick-setting MOP/wood chip/cement composition to make the fast- setting, fibrous, Portland Cement-based building material. The inventive composition combines the best properties of cement and wood, yet uses recycled materials to make an environmentally-friendly building material. |
150 |
Process for affecting the setting and working time of bioresorbable calcium phosphate cements |
US11137113 |
2005-05-25 |
US07279038B2 |
2007-10-09 |
Jiin-Huey Chern Lin; Chien-Ping Ju; Wen-Cheng Chen |
A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5-2.5. The wetting solution suitable for use in the process of the present invention includes water, an organic solvent, an acidic and basic solution. A setting solution for mixing with the heated powder to form the fast-setting, bioresorbable calcium phosphate cement may be water, an acidic or basic solution according to the process of the present invention. |
151 |
High strength biological cement composition and using the same |
US11584132 |
2006-10-20 |
US20070098811A1 |
2007-05-03 |
Donghui Lu; Shuxin Zhou |
A hydraulic cement for biomedical applications. The cement sets in-situ, hardening when exposed to water to produce nano-dispersed composite of calcium-silicate-hydrate gel mixed with hydroxyapatite. In comparison with prior cements, the composition provides high biocompatibility, high bioactivity and high biomechanical strength, due to the composite structure of the calcium silicate hydrate reinforced with co-precipitated particles of hydroxyapatite. Biocompatibility is also increased due to an absence of aluminum and magnesium in the composition. The cement is suitable for variety of applications, including dental implants, bone fixation, and bone repair. |
152 |
Magnesium Ammonium Phosphate Cement Composition |
US11530835 |
2006-09-11 |
US20070022912A1 |
2007-02-01 |
Michael Zimmermann |
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive. |
153 |
Calcium phosphate cements made from (TTCP) with surface whiskers and process for preparing same |
US11133166 |
2005-05-19 |
US07160382B2 |
2007-01-09 |
Jiin-Huey Chern Lin; Chien-Ping Ju; Wen-Cheng Chen |
A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers on a surface thereof; the basic calcium phosphate whiskers having a Ca/P molar ratio greater than 1.33, and having a length up to about 5000 nm and a width up to about 500 nm. The basic calcium phosphate whiskers are substantially free of a hydroxyapatite phase and mainly composed of TTCP phase. |
154 |
Biocompatible cement containing reactive calcium phosphate nanoparticles and methods for making and using such cement |
US11451527 |
2006-06-12 |
US20060260511A1 |
2006-11-23 |
Brian Genge; Licia Wu; Glenn Sauer; Roy Wuthier; Ronald Genge |
A cement powder is disclosed that contains reactive tricalcium phosphate nanoparticles and other ingredients required to form a cementous material. Methods of making the reactive tricalcium phosphate nanoparticles, the cement powder, the cement paste, and cured cement are also provided, as are methods and articles for using the cement. |
155 |
Process for rendering an ash inert, artificial pozzolana obtained by means of the said process |
US11117297 |
2005-04-29 |
US07128006B2 |
2006-10-31 |
Claude Criado; Fabrice Giraud; Jean-Emmanuel Aubert; Bernard Husson |
Process for rendering inert an ash originating from the incineration of municipal waste, according to which the ash is subjected successively to treatment (19) with a water-soluble phosphate (20) in the presence of water, under conditions adjusted to crystallize hydroxyapatite and/or whitlockite, and to calcination (22). Artificial pozzolana, obtained by subjecting an ash originating from the incineration of municipal waste to such an inerting process. |
156 |
Magnesium ammonium phosphate cement composition |
US11104392 |
2005-04-11 |
US07115163B2 |
2006-10-03 |
Michael Zimmermann |
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive. |
157 |
Process for affecting the setting and working time of bioresorbable calcium phosphate cements |
US11137112 |
2005-05-25 |
US20050274288A1 |
2005-12-15 |
Jiin-Huey Lin; Chien-Ping Ju; Wen-Cheng Chen |
A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5-2.5. The wetting solution suitable for use in the process of the present invention includes water, an organic solvent, an acidic and basic solution. A setting solution for mixing with the heated powder to form the fast-setting, bioresorbable calcium phosphate cement may be water, an acidic or basic solution according to the process of the present invention. |
158 |
Injectable calcium phosphate cements and the preparation and use thereof |
US11129066 |
2005-05-13 |
US20050271742A1 |
2005-12-08 |
Jiin-Huey Chern Lin; Chien-Ping Ju; Wen-Cheng Chen |
A calcium phosphate cement suitable for use in dental and bone prosthesis is disclosed, which include calcium phosphate particles having a diameter of 0.05 to 100 microns, wherein said calcium phosphate particles on their surfaces have whiskers or fine crystals having a width ranging from 1 to 100 nm and a length ranging from 1 to 1000 nm. |
159 |
Injectable calcium phosphate cements and the preparation and use thereof |
US11129063 |
2005-05-13 |
US20050271741A1 |
2005-12-08 |
Jiin-Huey Lin; Chien-Ping Ju; Wen-Cheng Chen |
A calcium phosphate cement suitable for use in dental and bone prosthesis is disclosed, which include calcium phosphate particles having a diameter of 0.05 to 100 microns, wherein said calcium phosphate particles on their surfaces have whiskers or fine crystals having a width ranging from 1 to 100 nm and a length ranging from 1 to 1000 nm. |
160 |
Tetracalcium phosphate (TTCP) having calcium phosphate whisker on surface |
US11131891 |
2005-05-18 |
US20050268820A1 |
2005-12-08 |
Jiin-Huey Lin; Chien-Ping Ju; Wen-Cheng Chen |
A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers or fine crystals on a surface thereof, the basic calcium phosphate whiskers or fine crystals having a Ca/P molar ratio greater than 1.33, and having a length up to about 5000 nm and a width up to about 500 nm. |