Yan Chen

US Patent:

20090267596, Oct 29, 2009

Filed:

Mar 6, 2009

Appl. No.:

12/399603

Inventors:

Hua Wang - Pasadena CA, US
Seyed Ali Hajimiri - Pasadena CA, US
Yan Chen - Pasadena CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G01N 27/00
G01R 33/00

US Classification:

324228

Abstract:

The invention relates to an integrated measurement system to detect a quantity of magnetic particles in a sample. The measurement system includes a substrate. An electromagnetic (EM) structure disposed on the surface of the substrate is configured to receive a sample including the magnetic particles in proximity thereof. The integrated measurement system also includes an electrical current generator disposed on the surface of the substrate which is electro-magnetically coupled to the EM structure. The electrical current generator is configured to cause an electrical current to flow in the EM structure. The integrated measurement system also includes an effective inductance sensor disposed on the surface of the substrate which is configured to measure a selected one of an effective inductance and a change in effective inductance. The invention also relates to a method to determine the number of and/or the locations of the magnetic particles in a sample.

US Patent:

20210259811, Aug 26, 2021

Filed:

May 6, 2021

Appl. No.:

17/313990

Inventors:

- San Jose CA, US
Jennifer C. Chen - Alhambra CA, US
Yan Chen - Cupertino CA, US

International Classification:

A61C 7/08
A61C 7/36
A61C 7/00

Abstract:

An orthodontic aligner includes a first plastic segment having a first shape that fits over a first portion of a dental arch of a patient, a second plastic segment having a second shape that fits over a second portion of the dental arch of the patient, and a connector that joins the first plastic segment to the second plastic segment. The connector is configured to be disposed along a lingual side of one or more additional teeth of the patient without exerting a clinically significant force on the one or more additional teeth. The connector spans a gap between the first plastic segment and the second plastic segment, the gap corresponding to the one or more additional teeth that are not to receive the clinically significant force. The connector includes a flexible material that will perform at least one of flex, move or change shape responsive to applied forces.

US Patent:

20190038383, Feb 7, 2019

Filed:

Oct 11, 2018

Appl. No.:

16/158140

Inventors:

- San Jose CA, US
Jennifer C. Chen - Alhambra CA, US
Yan Chen - Cupertino CA, US

International Classification:

A61C 7/08
A61C 7/36
A61C 7/00

Abstract:

A method includes forming a plastic orthodontic aligner having a plurality of cavities shaped to receive at least portions of a plurality of teeth of a patient. A first segment of the plastic orthodontic aligner corresponds to a first subset of the plurality of cavities for moving a first subset of the plurality of teeth of the patient. A second segment of the plastic orthodontic aligner corresponds to a second subset of the plurality of cavities. The method further includes removing a first portion of the plastic orthodontic aligner between the first and second segments of the plastic orthodontic aligner to form a connector to minimize force transmission between the first and second segments. The connector is configured to be disposed along one or more additional teeth to span a gap between the first and second segments without exerting a clinically significant force on the one or more additional teeth.

US Patent:

20160128803, May 12, 2016

Filed:

Nov 12, 2014

Appl. No.:

14/539725

Inventors:

- San Jose CA, US
Jennifer C. Chen - Alhambra CA, US
Yan Chen - Cupertino CA, US

International Classification:

A61C 7/08
A61C 7/00
A61C 7/36

Abstract:

A segmented orthodontic aligner includes at least a first segment and a second segment. Each segment is shaped to fit over a set of teeth of a patient. The segmented aligner further includes a connector that joins the first segment to the second segment. The connector isolates the transmission of force between the first segment and the second segment.