Canadian Patents & Development Ltd.

Iatroquest Corporation

Other

National Research Council of Canada

Canica Design Inc.

David W Armstrong

Martine L Lafrance

Hiroshi Yamazaki

L Perry Fleming

Deborah G Grenzowski

Keith D Holden

Stanley M Martin

Matthew E Archibald

Michael T O'MALLEY

Julia Van Eyk Barry

Alden Rattew

Leonard G 2305 10Th Lane Lee

Owen L John

Semiconductor materials having a porous texture are modified with a recognition element and produce a photoluminescent response on exposure to electromagnetic radiation. The recognition elements, which can be selected from biomolecular, organic and inorganic moieties, interact with a target analyte to produce a modulated photoluminescent response, as compared with that of semiconductor materials modified with a recognition element only.

Photoluminescent semiconductor materials

A power lag compensation device is provided including a housing. A socket assembly is situated within the interior space of the housing for releasably receiving a plug connected to an appliance for being in electrical communication therewith. A plug assembly is mounted on the housing and extended therefrom exterior of the housing. The plug assembly includes a pair of spaced parallel rectangular prongs. The rectangular prongs each have an associated interconnect wire connected to a corresponding socket of the socket assembly. The plug assembly serves to releasably insert within a socket which is connected to an alternating current power source. A triggering mechanism is connected in communication with one of the interconnect wires within the housing. The triggering mechanism is adapted for producing an activation signal upon the detection of a current flow therethrough. A triac is connected between the interconnect wires within the housing with the triac having a gate connected to the triggering mechanism for allowing communication between the interconnect wires only during the receipt of the activation signal. Finally, a capacitor is connected between the interconnect wires in series with the triac means for providing a predetermined amount of power lag compensation when the triac means is in receipt of the activation signal.

Retrofittable energy saving device

Biotherapeutic cell-coated microspheres

There is disclosed a cell culture apparatus particularly suitable for the culture of viable, shear sensitive cells, either grown in suspension or attached to a substrate such as microcarrier beads. The apparatus comprises a cell culture compartment and a compensation chamber disposed thereabove and serving to maintain sterile conditions for the cell culture compartment operating in a zero-headspace mode. The cell culture compartment comprises a gas exchange tube connected to an outside source of gas and defining a downflow zone and a central upflow zone in the cell culture compartment. An Archimedean screw-type auger is installed coaxially in the cell culture compartment to provide a circulating flow of liquid therein. The turbulence of the flow is reduced by the provision of an upper and lower flow guide surface. The gas exchange tube is adapted to exchange gas from outside with the liquid inside the cell culture compartment both on its outer and on its inner surface thereby enhancing the efficiency of gas exchange.

Cell culture bioreactor

This invention is concerned with the selective production of ethyl acetate and acetaldehyde by microorganisms, for example of the genus Candida and of the genus Hansenula. Ethyl acetate or acetaldehyde may be produced by altering the concentration of ethanol in the medium.

Selective production of ethyl acetate and acetaldehyde by microorganisms

Growing community of inventors

Ottawa, Canada

David W Armstrong