Warsaw Orthopedic, Inc.

Queen's University at Kingston

Millenium Biologix Inc.

Canadian Patents & Development Ltd.

Other

Nortel Networks Corporation

Resource Recovery Limited

Michael Sayer

Timothy J N Smith

Sydney M Pugh

Sarah Dorthea Langstaff

Vasanta Chivukula

Ismail T Emesh

David Ross McDonald

Joel Reid

Jason Hendry

Cheng-Kuei Jen

Jean F Bussiere

Patrick S Nicholson

Kimihiro Yamashita

Michael F Bell

Reginald H Clark

John D MacArthur

William D Wilder

Sarah D Langstaff

Guanghua Yi

T Edward Petroff

David A Barrow

The invention is a silicon substituted oxyapatite compound (Si-OAp) for use as a synthetic bone biomaterial either used alone or in biomaterial compositions. The silicon substituted oxyapatite compound has the formula Ca(PO)(SiO)O, where 0&#x3c;x&#x3c;1.0.

Silicon substituted oxyapatite

The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wherein at least one of the elements is substituted with an element having an ionic radius of approximately 0.1 to 1.1 &#x212b;. The knowledge of the specific molecular and chemical properties of the compound allows for the development of several uses of the compound in various bone-related clinical conditions.

Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity

The invention is a silicon substituted oxyapatite compound (Si&#x2014;OAp) for use as a synthetic bone biomaterial either used alone or in biomaterial compositions. The silicon substituted oxyapatite compound has the formula Ca(PO)(SiO)O, where 0&#x3c;x&#x3c;1.0.

The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wherein at least one of the elements is substituted with an element having an ionic radius of approximately 0.1 to 1.1 &angst;. The knowledge of the specific molecular and chemical properties of the compound allows for the development of several uses of the compound in various bone-related clinical conditions.

A sol-gel precursor mixture for forming a perovskite ferroelectric material and a method for forming a ferroelectric material are provided. The precursor solution comprises a sol-gel formulation of a mixture of an inorganic salt of at least one metal, and metal-organic compounds of other constituent metals in a suitable pH controlled aqueous solvent mixture to form a stable, clear sol-gel mixture. The precursor solution and method provides for formation of thin layers of other ferroelectric dielectrics and piezoelectric materials, particularly lead containing materials, for application including non-volatile DRAMs, optoelectronic devices relying on non-linear optical properties, and piezoelectric devices, and is compatible with processing for submicron device structures for bipolar, CMOS or bipolar CMOS circuits.

Sol-gel precursor and method for formation of ferroelectric materials for integrated circuits

Sol-gel precursor and method for formation of ferroelectric materials

A method for producing thick ceramic films of greater than 10 .mu.m on selected substrates is described. Conventional sol gel solutions are loaded with up to about 90% by weight of finely divided ceramic particles and mixed. The resulting slurry or paint can be either spun or dip coated or sprayed or painted onto a planar or other substrate, fired to remove the organic materials and to develop a microcrystalline structure. The fired film may then be heated. Composite films are also contemplated.

Method for producing thick ceramic films by a sol gel coating process

Efficient, simple, miniature and economical piezoelectric and ultrasonic devices employing optical fibers coated with lead-zirconate-titanate (PZT) thin piezoelectric and ferroelectric films are described. The PZT thin films are fabricated chemically by a sol-gel method. Optical fibers can be dipped into the PZT solution, and followed by an annealing and an electric poling process in order to achieve good piezoelectricity in the coated PZT films. This coating process can be devised as an on-line method and thus coating length can be larger than meters. Due to the long coating length, high piezoelectricity, miniature and flexible nature, devices using optical fibers may be used for medical, telecommunication and sensor applications.

Fiber-optic piezoelectric devices

A method of converting a feed solid polycrystalline of .beta. alumina into a hydronium conductor requires the preselection of an appropriate feed ceramic preferably with a chemical formula;

Method of converting a precursor ceramic solid into a solid ceramic

Apparatus and method for sorting scrap metal pieces dependent on the type of metal therein. The apparatus includes a conveyor and a feeding arrangement to feed the scrap metal pieces on to the conveyor, together with an X-ray fluorescence detector to examine each metal piece and determine the type of metal as a result of the characteristic X-rays emitted. A respective control signal is utilized to move pegs on the conveyor so as to permit the respective metal piece to exit from the conveyor along a respective path and to enter a bin for that particular type of metal. In this way scrap metal pieces of different metal are collected in different bins for subsequent processing.

Apparatus and method for sorting articles

A thermionic emitter for apparatus such as electron microscopes, scanning electron microscopes, and high power vacuum tubes which require a source of electrons formed from lanthanum strontium vanadate which is prepared from the compounds La.sub.(1.sub.-x) Sr.sub.(x) VO.sub.3, where x is the fraction of strontium (Sr) incorporated into LaVO.sub.3. The value of x lies between 0.1 and 0.4.

Growing community of inventors

Kingston, Canada

Michael Sayer