Michael D Spencer

US Patent:

7772288, Aug 10, 2010

Filed:

Jun 1, 2007

Appl. No.:

11/809879

Inventors:

Huaqiang Wu - Mountain View CA, US
Michael G. Spencer - Ithaca NY, US
Emmanuel Giannelis - Ithaca NY, US

Assignee:

Cornell Research Foundation, Inc. - Ithaca NY

International Classification:

B01F 3/12
C09K 11/02
C01B 21/06
H01L 21/20

US Classification:

516 33, 516 88, 516 93, 2523014 R, 25230136

Abstract:

The invention provides a composition that is a dispersion made from a Group III nitride, a solvent system, and a dispersant. The dispersion can be used to prepare Group III nitride thin films on a wide range of substrates, for example, glass, silicon, silicon dioxide, silicon nitride, silicon carbide, aluminum nitride, sapphire, and organic polymers. The particle size of the Group III nitride used for producing the thin films can be controlled by adjusting centrifugation of the dispersion and selecting a desired layer of supernatant. The dispersant can be removed from the thin films by calcination. The Group III nitride can contain a dopant. Doped Group III nitride thin films can emit visible light upon irradiation. Green, red, and yellow light emissions result from irradiating erbium-, europium-, and cerium-doped gallium nitride, respectively.

US Patent:

20120226343, Sep 6, 2012

Filed:

Mar 2, 2012

Appl. No.:

13/411340

Inventors:

Justin Vo - San Jose CA, US
Michael Spencer - Danville CA, US
Sargon Bourang - San Jose CA, US
William S. Henry - Oakland CA, US
Hong Doan - Milpitas CA, US
Hanh Doan - Milpitas CA, US

Assignee:

STRYKER NV OPERATIONS LIMITED - Dublin
STRYKER CORPORATION - Kalamazoo MI

International Classification:

A61F 2/84

US Classification:

623 112

Abstract:

A stent delivery system includes a delivery member, a frictional interfacing member disposed on a distal region of the delivery member, the frictional interfacing member comprising a plurality of perfusion channels, a self-expanding stent disposed over the respective frictional interfacing member and delivery member in a radially contracted configuration, and a sheath defining disposed over the respective self-expanding stent, frictional interfacing member, and delivery member, wherein the frictional interfacing member resists axial and/or rotational movement of the stent relative to the delivery member while the stent is in its radially contracted configuration, and wherein the perfusion channels permit fluid to flow from an interior region of the sheath proximal of the frictional interfacing member to an interior region of the sheath distal of the frictional interfacing member.