Xi Chen

US Patent:

20120319329, Dec 20, 2012

Filed:

Apr 20, 2012

Appl. No.:

13/452441

Inventors:

Xi Chen - New York NY, US

Assignee:

The Trustees of Columbia University in the City of New York - New York NY

International Classification:

B29C 53/02
B29C 59/02

US Classification:

264320, 425352

Abstract:

Self-assembled buckling patterns of thin films on compliant substrates can be used in micro-fabrication. However, most previous work has been limited to planar substrates, and buckling of films on curved substrates has not been widely explored. With the constraining effect from various types of substrate curvature, numerous new types of buckling morphologies can be derived. The morphologies not only enable true three-dimensional (3D) fabrication of microstructures and microdevices, but also can have important implications for the morphogenesis of quite a few natural and biological systems.

US Patent:

20220311044, Sep 29, 2022

Filed:

Mar 29, 2022

Appl. No.:

17/706754

Inventors:

- Honeoye Falls NY, US
Zhijun Gu - Jingang Town, CN
Joselito Venturina - NEW WESTMINSTER, CA
Xi Chen - Naperville IL, US
Sai Nitin Yellamilli - Naperville IL, US

International Classification:

H01M 10/056
H01M 10/0525

Abstract:

Making a composite solid polymer electrolyte includes mixing a slurry of lithiated ionomer and a doped inorganic ceramic electrolyte and coating the slurry onto a lithiated ionomer membrane. The lithiated ionomer can be provided by exchanging protons of an ionomer membrane with lithium ions to form a lithiated ionomer membrane and dissolving the lithiated ionomer membrane to produce the lithiated ionomer. Various composite solid polymer electrolytes can be made for use in solid-state lithium-ion batteries. Ways of making a dispersion for use in a solid-state electrolyte include lithiating an ionomer by heating and dissoluting to form the dispersion. An ionic liquid and ceramic particles can be added to the dispersion. Ways of making a reinforced solid-state electrolyte for a solid-state lithium-ion battery include infusing a porous membrane with the dispersion.

US Patent:

20220239382, Jul 28, 2022

Filed:

Jan 25, 2022

Appl. No.:

17/583317

Inventors:

- Espoo, FI
Xi CHEN - Aberdeen NJ, US

International Classification:

H04B 10/69
H04J 14/02
H04B 10/61

Abstract:

An apparatus includes an optical source of an optical wavelength carrier, an optical modulator to receive the optical wavelength carrier, and an optical data receiver. The optical data modulator is configured to produce, from the optical wavelength carrier, an optical signal to carry separate data on different first and second components thereof in individual modulation periods during data transmission and to carry a training sequence on one of the components during time slots for calibration. The first component is relatively phase offset from the second component in the optical signal. The optical data modulator alternates the one of the components between the first and second components over the time slots for calibration. The optical receiver is connected to receive a portion of the optical signal and to temporally interleave a measurement of a characteristic of the first component and a measurement of a characteristic of the second component over the time slots for calibration. The optical receiver is configured to feedback information to the optical data modulator based on the measured characteristics. The optical data modulator is configured to reduce an imbalance between the two components of the optical carrier during data transmission based on the information.

US Patent:

20230079877, Mar 16, 2023

Filed:

Nov 14, 2022

Appl. No.:

17/986210

Inventors:

Nazir Mir - Somerset NJ, US
Aishwarya Balasubramanian - Hillsborough NJ, US
Xi Chen - Belle Mead NJ, US

International Classification:

B65D 75/58
B65D 75/36

Abstract:

A packaging device incorporating a breathable peel/reseal film and enabling a preservation process for allowing for the distribution, storage and multiple servings of a food product, particularly perishable food product(s), and initiating and controlling the transmission rates, respiration rates or deterioration of the perishable food product(s) and thereby, maintaining good internal and external food quality and normal development of flavor and aroma characteristics. The packaging device includes a plurality of atmospheric control attributes that modulates or controls the atmosphere within the packaging device as the food product(s) respire in order to promote the extended shelf-life of the food product and the maintenance of the quality and desirable marketable characteristics of the food product. The atmospheric control attributes can include perforations that may be positioned in breathable peel/reseal film portion of the package to allow the product respiration for multiple servings without substantially altering the shelf life extension properties of the packaging device.

US Patent:

20230063367, Mar 2, 2023

Filed:

Aug 27, 2021

Appl. No.:

17/459638

Inventors:

Hanna S. CHEN - Aurora IL, US
Xi Chen - Aurora IL, US

International Classification:

A61H 39/06
A61H 39/00

Abstract:

A system for decreasing symptoms of primary dysmenorrhea of a female person/patient. Such system includes an electrical assembly configured for attachment at an acupoint BL57 on each posterior calf skin of the patient proximately mid-length between the ankle and knee region of the patient. Each electrical assembly includes a heating element, a temperature sensor, a heat radiator for dissipating heat generated by the heating element, and an energy source. A pulse generating controller including a computer having logic circuitry powered by the energy source and carried by and arranged in electrical communication with the electrical assembly. The controller operates each heating element through a set or series of immediately consecutive heating and cooling cycles. Each heating and cooling cycle initially involves operating the heating element to warm the person's/patient's skin underlying the heating element as measured by the temperature sensor for a period of 10 to 30 seconds and to a temperature ranging between about 122 F. to about 126 F. Immediately thereafter, the heat exchanger applies a cooling effect to the heating element whereby cooling the heating element as measured by the temperature sensor for a time period of 10 to 60 seconds. A method for decreasing symptoms of primary dysmenorrhea of a female person/patient is also disclosed.

US Patent:

20230058338, Feb 23, 2023

Filed:

May 10, 2019

Appl. No.:

16/408659

Inventors:

- New York NY, US
Onur Cakmak - New York NY, US
Xi Chen - New York NY, US

Assignee:

THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK - New York NY

International Classification:

F03G 7/06
C09J 5/00
C09J 11/00
C08K 11/00

Abstract:

Water-responsive actuators and methods for creating water responsive actuators are disclosed. In some embodiments, the disclosed subject matter includes a first layer, for example a plastic tape, and a second layer, for example bacterial spores and cured adhesive. The second layer can be created in a pattern. The pattern can include joints, which can contract when exposed to dry air and can thereby bend the actuator, and can expand when exposed to humid air and thereby return the actuator its original position.

US Patent:

20210292463, Sep 23, 2021

Filed:

Mar 18, 2021

Appl. No.:

17/205206

Inventors:

- Evanston IL, US
Xi Chen - Evanston IL, US
Sumeng Hu - Evanston IL, US
Lingqiao Li - Houston TX, US

International Classification:

C08G 18/10
C08G 18/32
C08G 18/48
C08G 18/20
C08G 18/76
C08J 11/24

Abstract:

Reprocessable crosslinked polyurethane networks, methods for making the reprocessable polyurethane networks, and methods for depolymerizing the crosslinked polyurethane networks and recovering the depolymerized monomers are provided. The polyurethane networks are rendered reprocessable by the incorporation of free hydroxyl groups and the incorporation of multi-functional alcohol crosslinkers.

US Patent:

20210005852, Jan 7, 2021

Filed:

Mar 11, 2019

Appl. No.:

16/979312

Inventors:

- New York NY, US
Guoyu QIAN - Wuhan, CN
Xi CHEN - New York NY, US
Xiangbiao LIAO - New York NY, US
Changmin SHI - College Park MD, US
Tianyang WANG - Columbus OH, US

Assignee:

THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK - New York NY

International Classification:

H01M 2/02
H01M 4/587
H01M 4/38
H01M 4/66
H01M 2/16
H01M 2/20
H01M 10/052
H01M 10/058

Abstract:

An energy storage device is disclosed that includes an axial structure with two or more rigid energy storage units and conductive flexible components separating adjacent rigid energy storage units. The rigid energy storage units include a plurality of folded layers, including an anode layer, a cathode layer, a first current collector layer, a second current collector layer, one or more separator layers, and one or more tape layers. The adjacent rigid energy storage units are produced by folding the plurality of layers one or more times onto themselves at a plurality of locations along the axial structure. The axial structure is then sealed in an aluminized casing along with an electrolyte material. The energy storage device exhibits high energy density, high foldability, and excellent electrochemical performances by virtue of the folded rigid energy storage segments connected by the flexible components. The conductive flexible component functions in a similar way as the soft marrow between vertebrae in the spine, providing excellent overall flexibility.