Timothy D Tyler

US Patent:

D614961, May 4, 2010

Filed:

Dec 18, 2008

Appl. No.:

29/313245

Inventors:

Stacy Alycia Thomas - Chicago IL, US
Patty Hing Yan Tsang - Guangzhou, CN
Dongpo Huang - Beijing, CN
Xuefeng Jiao - Beijing, CN
Timothy Lee Tyler - Cincinnati OH, US
Chaohang Deng - Guangzhou, CN

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

0901

US Classification:

D 9529, D9435

US Patent:

D615412, May 11, 2010

Filed:

Jun 20, 2008

Appl. No.:

29/308556

Inventors:

Stacy (Alycia) Thomas - Chicago IL, US
Patty Hing Yan Tsang - Guangzhou, CN
Dongpo Huang - Beijing, CN
Xuefeng Jiao - Beijing, CN
Timothy (Lee) Tyler - Cincinnati OH, US
Chaohang Deng - Guangzhou, CN

Assignee:

The Procter & Gamble Company - Cincnnati OH

International Classification:

0901

US Classification:

D 9529, D9435

US Patent:

D621708, Aug 17, 2010

Filed:

Jun 20, 2008

Appl. No.:

29/308534

Inventors:

Stacy Alycia Thomas - Chicago IL, US
Patty Hing Yan Tsang - Guangzhou, CN
Dongpo Huang - Beijing, CN
Timothy Lee Tyler - Cincinnati OH, US
Chaohang Deng - Guangzhou, CN

Assignee:

The Procter & Gamble Company - Cincinnati OH

International Classification:

0901

US Classification:

D 9500

US Patent:

20120281213, Nov 8, 2012

Filed:

May 1, 2012

Appl. No.:

13/461521

Inventors:

TIMOTHY P. TYLER - CHICAGO IL, US
ANNE-ISABELLE HENRY - CHICAGO IL, US
RICHARD P. VAN DUYNE - WILMETTE IL, US
MARK C. HERSAM - WILMETTE IL, US

Assignee:

NORTHWESTERN UNIVERSITY - EVANSTON IL

International Classification:

B01D 43/00
G01J 3/44
B82Y 40/00
B82Y 99/00

US Classification:

356301, 494 37, 977901, 977773

Abstract:

In one aspect of the present invention, a method for sorting nanoparticles includes preparing a high-viscosity density gradient medium filled in a container, dispersing nanoparticles into an aqueous solution to form a suspension of the nanoparticles, each nanoparticle having one or more cores and a shell encapsulating the one or more cores, layering the suspension of the nanoparticles on the top of the high-viscosity density gradient medium in the container, and centrifugating the layered suspension of the nanoparticles on the top of the high-viscosity density gradient medium in the container at a predetermined speed for a predetermined period of time to form a gradient of fractions of the nanoparticles along the container, where each fraction comprises nanoparticles in a respective one of aggregation states of the nanoparticles.