公开(公告)号：US09718914B2

公开(公告)日：2017-08-01

申请号：US14840913

申请日：2015-08-31

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Gabriel Iftime ,  John Steven Paschkewitz

IPC: C08F292/00 ,  C01B13/14 ,  C09C1/44 ,  C09C3/08 ,  C08K7/00 ,  C08K9/00 ,  C08G59/00 ,  C08G69/00 ,  C08K9/08 ,  C08G69/02 ,  C08G71/02

CPC classification number: C08F292/00 ,  C01B13/145 ,  C08G59/00 ,  C08G69/00 ,  C08G69/02 ,  C08G71/02 ,  C08G83/001 ,  C08K7/00 ,  C08K9/08 ,  C09C1/44 ,  C09C3/08

Abstract: A method of forming lightweight structures from particle networks includes functionalizing edges of particles of an anisotropic material, exfoliating of the particles to form sheets of the material, aligning the sheets of material to form a network of multi-layered and aligned particles, and forming a structure out of the network of particles. One example uses graphite powder mixed into 4-aminobenzoic acid for edge functionalization, and exfoliation occurs with sonication in a solvent. The resulting particles undergo alignment with an aligning nozzle that also dispenses the aligned particles to form a structure.

公开(公告)号：US20170187054A1

公开(公告)日：2017-06-29

申请号：US14981104

申请日：2015-12-28

Applicant: Palo Alto Research Center Incorporated

Inventor： Divyaraj Desai ,  Vedasri Vedharathinam ,  Martin Joseph Sheridan ,  Ashish V. Pattekar ,  Craig Eldershaw ,  Rajesh Kumar Padmarajan ,  Gabriel Iftime

IPC: H01M8/04276 ,  H01M8/2455 ,  H01M4/86 ,  H01M8/02 ,  H01M8/20

CPC classification number: H01M8/04283 ,  H01M4/8626 ,  H01M8/023 ,  H01M8/188 ,  H01M8/22 ,  H01M8/2455 ,  Y02E60/528

Abstract: A flowing electrolyte fuel cell system design (DHCFC-Flow) is provided. The use of a flowing oxygen-saturated electrolyte in a fuel cell offers a significant enhancement in the cell performance characteristics. The mass transfer and reaction kinetics of the superoxide/peroxide/oxide ion (mobile oxygen ion species) in the fuel cell are enhanced by recirculating an oxidizing gas-saturated electrolyte. Recirculating oxygen-saturated electrolyte through a liquid channel enhances the maximal current observed in a fuel cell. The use of a oxygen saturated electrolyte ensures that the reaction kinetics of the oxygen reduction reaction are fast and the use of convection ameliorates concentration gradients and the diffusion-limited maximum current density. The superoxide ion is generated in situ by the reduction of the oxygen dissolved in the gaseous electrolyte. Also, a dual porosity membrane allows the uniform flow of fuel (e.g., methane) on the fuel side, without allowing phase mixing. The capillary pressure for liquid intrusion into the gas phase and vice versa is quite large, estimated to be 1-10 psi. This makes it easier to control the fluctuations in gas/liquid velocity which might otherwise lead to phase mixing and the loss of fuel cell performance. In one variation, a dual-porosity membrane structure is incorporated in the system to allow uniform flow of fuel and prevent mixing of fuel with a liquid electrolyte.

公开(公告)号：US11866559B2

公开(公告)日：2024-01-09

申请号：US17147217

申请日：2021-01-12

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Junhua Wei ,  Gabriel Iftime ,  Michael Benedict ,  Mahati Chintapalli

IPC: C08K3/36 ,  C08J5/24 ,  C08K3/34 ,  C08K3/04 ,  C08L101/00

CPC classification number: C08J5/243 ,  C08K3/042 ,  C08K3/346 ,  C08K3/36 ,  C08L101/00 ,  C08J2363/00

Abstract: A method of manufacturing includes producing a powder resin comprising a polymer precursor and a thermal initiator, packing a fiber structure with the powder resin, resulting in a resin-packed structure, and heating the resin-packed structure to a curing temperature high enough to melt and cure the resin-packed structure to form a final structure.

公开(公告)号：US11614409B2

公开(公告)日：2023-03-28

申请号：US16227807

申请日：2018-12-20

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Gabriel Iftime ,  Mahati Chintapalli ,  Eli Bulger ,  Warren Jackson ,  Sean Emerson Doris ,  Jessica Louis Baker Rivest ,  Eric Cocker ,  Antonio Williams ,  Crystal Pham

IPC: G01N21/78 ,  G01N33/52

Abstract: A colorimetric sensor has a first material deposited on a surface, and sensing particles on a surface of the first material, wherein the sensing particles comprise sensing species dispersed into porous host structures, such that at least a portion of the sensing particles is exposed to an ambient environment, wherein the first material attaches the sensing particles to surface. A method of forming a colorimetric sensor including depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, wherein the first material attaches the sensing particles to the substrate such that at least a portion of the sensing particles is exposed to an ambient environment.

公开(公告)号：US20230069939A1

公开(公告)日：2023-03-09

申请号：US17854261

申请日：2022-06-30

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Gabriel Iftime ,  Junhua Wei ,  Mahati Chintapalli

IPC: C08K9/04 ,  C08K3/14 ,  C04B14/32

Abstract: A method includes adding particles to an alkaline solution, stirring the solution to cause the particles to acquire hydroxyl groups producing activated particles, dispersing the activated particles into a solvent solution, adding acetylene benzoxazine into the solvent solution, mixing the solvent solution, removing the solvent from the solvent solution to produce acetylene-benzoxazine functionalized particles, and drying the acetylene-benzoxazine functionalized particles. A composition of matter has acetylene-benzoxazine functionalized particles dispersed in a resin.

公开(公告)号：US20220362990A1

公开(公告)日：2022-11-17

申请号：US17322534

申请日：2021-05-17

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Michael Benedict ,  Junhua Wei ,  Gabriel Iftime

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00

Abstract: A method of three-dimensional manufacturing including depositing a layer of powder in a powder bed, the layer comprising particles of at least a first component of a two-component reactive material, dispensing a first solution containing at least one of a solvent and a second component of the two-component reactive material the solvent selected to cause the two components to form one or more cross-linked regions of a three-dimensional object, iterating the depositing and dispensing to form subsequent layers of the three-dimensional object until the object is formed, and removing any unwanted particles from the object. A three-dimensional manufacturing system has a powder bed to hold layers of particles, and one or more print heads positioned to dispense liquid onto the powder bed to cause the particles for form one or more cross-linked regions in layers of a solid object.

公开(公告)号：US20220178859A1

公开(公告)日：2022-06-09

申请号：US17677716

申请日：2022-02-22

Applicant: Palo Alto Research Center Incorporated

Inventor： Gabriel Iftime ,  Clinton Smith ,  David Eric Schwartz ,  Yong Zhang ,  Vedasri Vedharathinam

IPC: G01N27/04 ,  B01J20/20 ,  B01J20/02 ,  B01J20/32 ,  G01N33/00 ,  G01N27/12

Abstract: Disclosed herein are methods of producing metal nanoparticle-decorated carbon nanotubes. The methods include forming a reaction mixture by combining a first solution with a second solution, wherein the first solution comprises polymer-coated metal nanoparticles comprising metallic nanoparticles coated with a polymer, and wherein the second solution comprises carbon nanotubes. The methods also include heating the reaction mixture to a temperature greater than a glass transition temperature of the polymer for a time sufficient to cause the polymer-coated metal nanoparticles to bind to the carbon nanotubes forming the metal nanoparticle-decorated carbon nanotubes.

公开(公告)号：US20210363356A1

公开(公告)日：2021-11-25

申请号：US17392028

申请日：2021-08-02

Applicant: Palo Alto Research Center Incorporated

Inventor： Quentin Van Overmeere ,  Scott Alan Elrod ,  Scott E. Solberg ,  Gabriel Iftime ,  Ravi Neelakantan ,  Bernard D. Casse

IPC: C09D5/33 ,  C09D5/02 ,  C09D133/10 ,  C09D129/14 ,  C09D7/40

Abstract: Disclosed herein in is a radiative cooling formulation including a first component with >55% reflectance in a wavelengths range of 0.3 to 2.5 microns, a second component with a first thermal emissivity peak value greater than 0.85 at a first wavelength in a range of 8 to 13 microns (μm), and a third component to mechanically bind together a mixture of the first component and second component.

公开(公告)号：US11084943B2

公开(公告)日：2021-08-10

申请号：US16547445

申请日：2019-08-21

Applicant: Palo Alto Research Center Incorporated

Inventor： Quentin Van Overmeere ,  Scott Alan Elrod ,  Scott E. Solberg ,  Gabriel Iftime ,  Ravi Neelakantan ,  Bernard D. Casse

IPC: C09D5/33 ,  C09D5/02 ,  C09D133/10 ,  C09D129/14 ,  C09D7/40 ,  C08K3/30 ,  C08K3/22

Abstract: Disclosed herein in is a radiative cooling formulation comprising a first component with >55% reflectance in wavelengths between 0.3 to 2.5 microns, a second component with >0.85 peak thermal emissivity in a window of 4 to 35 microns, and a third component to mechanically bind together the mixture of components.

公开(公告)号：US11059216B2

公开(公告)日：2021-07-13

申请号：US15629383

申请日：2017-06-21

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： John Steven Paschkewitz ,  Gabriel Iftime ,  Victor Alfred Beck ,  David Mathew Johnson

IPC: B29C64/112 ,  B33Y30/00 ,  B29C64/209 ,  B33Y50/02 ,  B33Y70/00 ,  B29B7/90 ,  B29K101/10 ,  B29K75/00 ,  B29K307/04

Abstract: A deposition system has a reservoir of a material to be deposited, the material having fibers, a print head having a mixer to generate a mixed flow of the materials having fibers, a flow focusing section arranged to cause short fibers to align inside the print head, and an outlet of the print head to allow the material to be deposited on a substrate, and a controller to actuate the print head to control an orientation of the print head relative to a substrate to cause longer fibers to align external to the print head. A deposition system includes a reservoir of a material to be deposited, the material having fibers, a print head connected to the reservoir of material by a conduit, the print head having an exit nozzle and an actuator, the actuator to control the orientation of the exit nozzle relative to a substrate.