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1. 发明授权

US11826695B2 System and method to separate gases using high viscosity liquid sorbents in a spray contactor 有权
公开(公告)号：US11826695B2
公开(公告)日：2023-11-28
申请号：US17509816
申请日：2021-10-25
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： Mahati Chintapalli , Jerome Unidad , Kathryn F. Murphy , Ravi Neelakantan , Rahul Pandey , Stephen Matthew Meckler , David Mathew Johnson
IPC分类号： B01D53/14 , B01D53/18
CPC分类号： B01D53/1493 , B01D53/1425 , B01D53/1475 , B01D53/185 , B01D2252/204 , B01D2252/20415 , B01D2252/20478 , B01D2257/102 , B01D2257/504 , B01D2258/0283
摘要： A gas separation system has system input inlet configured to receive a stream mixture including a target gas, one or more spray generators positioned to spray a non-sprayable liquid to change a concentration of the target gas in the non-sprayable liquid, one or more system outlets positioned to outlet an output material, wherein at least one of the system outlets outputs a material having a lower amount of the target gas than the input stream mixture, and a recirculating path connected to the one or more outputs and the input inlet to allow recirculation of the non-sprayable liquid. A method of performing gas separation includes absorbing a target gas from an input stream in a non-sprayable capture liquid, and releasing the target gas in an output gas stream by spraying the non-sprayable capture liquid into a heated volume using a spray generator. A method of performing gas separation includes receiving an input stream that includes a target gas, using one or more spray generators to apply a non-sprayable liquid as a spray to the input stream to change a concentration of the target gas in the liquid, and outputting the liquid with the changed concentration through an outlet.

2. 发明授权

US11732378B2 Three dielectric electrohydrodynamic patterning 有权
公开(公告)号：US11732378B2
公开(公告)日：2023-08-22
申请号：US16590902
申请日：2019-10-02
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： Michael Benedict , David Mathew Johnson , Elif Karatay , Eric Weflen , Ravi Neelakantan
IPC分类号： C25D13/04
CPC分类号： C25D13/04
摘要： A system to electrohydrodynamically pattern a material includes a first electrode having a first voltage, a second electrode having a second voltage that is different from the first voltage, one or more materials to be patterned residing between the first electrode and the second electrode, a gap between at least one surface of at least one of the materials to be patterned and one of the first or second electrodes, at least one patterning material in the gap, wherein the patterning material is a material other than air, and at least one filling material filling any remainder of the gap.

3. 发明申请

US20220281007A1 BUILD PLATES FOR ADDITIVE MANUFACTURING SYSTEMS AND METHODS FOR THE SAME 有权
公开(公告)号：US20220281007A1
公开(公告)日：2022-09-08
申请号：US17189667
申请日：2021-03-02
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： David K. Biegelsen , Scott E. Solberg , David Mathew Johnson
IPC分类号： B22F10/47 , B22F10/43 , B29C64/245 , B29C64/40
摘要： A build plate for an additive manufacturing device and methods for the same are provided. The build plate may include a base and a sacrificial plate coupled with the base. The etch rate of the sacrificial plate in an etchant may be greater than an etch rate of the base in the etchant. A method for separating a 3D printed article supported on the build plate may include contacting the sacrificial plate with the etchant.

4. 发明授权

US10850236B2 Low dispersion, fast response mixing device 有权
公开(公告)号：US10850236B2
公开(公告)日：2020-12-01
申请号：US14840964
申请日：2015-08-31
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： John Steven Paschkewitz , David Mathew Johnson
IPC分类号： B01D61/36 , B01F5/04 , B01F15/02 , B01F3/08 , B01F15/04 , B01F13/00 , B29C64/112 , B33Y70/00
摘要： A mixing system has a parallel droplet dispenser capable of making droplets of a first working material in the range of 10 nanometers to 10 micrometers, a pump to deliver fluid for the droplets of the first working material and to produce a first emulsion, a compact mixer having low inter-voxel mixing to receive the emulsion and produce a homogenous material, and a dispensing system. A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.

5. 发明授权

US10493483B2 Central fed roller for filament extension atomizer 有权
公开(公告)号：US10493483B2
公开(公告)日：2019-12-03
申请号：US15651195
申请日：2017-07-17
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： David Mathew Johnson
IPC分类号： B05B17/04 , B05D1/02 , B05B3/02 , B01J13/00 , B05B3/00
CPC分类号： B05B17/04 , B01J13/0095 , B05B3/02 , B05D1/02 , B05B3/00
摘要： A roller has an outer cylindrical surface having an array of holes, a central feed channel inside the roller, and vanes connecting the channel to the holes, forming a path for liquid between the channel and the holes. An atomization system having a fluid reservoir; a pair of rollers, at least one of the rollers having: a central feed channel, the channel fluidically connected to the fluid reservoir, an array of holes on a surface of the roller, and vanes connecting the channels to the holes, a nip formed between the rollers, and a receiving surface positioned to receive droplets formed when liquid exits the holes, stretches between the rollers as they counterrotate to form filaments and the filaments break into droplets.

6. 发明授权

US10029416B2 Polymer spray deposition methods and systems 有权
公开(公告)号：US10029416B2
公开(公告)日：2018-07-24
申请号：US14166834
申请日：2014-01-28
申请人： Palo Alto Research Center Incorporated
发明人： David Mathew Johnson , Armin R. Volkel , Victor Beck , John Steven Paschkewitz
IPC分类号： B29C67/00 , B05B17/04 , B29C64/112 , B29C64/20 , B29K105/00 , B29K101/12 , B33Y10/00 , B33Y30/00
摘要： Polymer spray deposition systems and methods are disclosed that can be used with a wide range of thermoplastic materials to produce high resolution objects having the complexity and structural integrity typically only achieved using more traditional manufacturing techniques, like injection molding processes. The polymeric spray deposition systems and methods use a spray generator that stretches the fluid between two diverging surfaces, such as two rollers or between two pistons. The stretched fluid breaks apart into a plurality of droplets and is guided through a delivery system, that can include an optional droplet size selector, and into a multi-nozzle array. The multi-nozzle array is controlled and directs the spray onto a target surface, thereby creating a three-dimensional object. The disclosed polymer spray deposition systems and methods can be used in three-dimensional print heads and printing techniques.

7. 发明申请

US20150021161A1 Continuously Producing Digital Micro-Scale Patterns On A Thin Polymer Film 有权
标题翻译：在薄膜上连续生产数字微尺度图案
公开(公告)号：US20150021161A1
公开(公告)日：2015-01-22
申请号：US13944851
申请日：2013-07-17
申请人： Palo Alto Research Center Incorporated
发明人： David Mathew Johnson , Armin R. Volkel , John Steven Paschkewitz
IPC分类号： B01J19/08 , B01J19/12
CPC分类号： B01J19/088 , B01J19/123 , G03F7/0002
摘要： A liquid thin film is disposed on a conveyor surface (e.g., a roller or belt) that moves the thin film into a precisely controlled gap (or nip) region in which the liquid thin film is subjected to an electric field that causes the liquid to undergo Electrohydrodynamic (EHD) patterning deformation, whereby portions of the liquid thin film form patterned liquid features having a micro-scale patterned shape. A curing mechanism (e.g., a UV laser) is used to solidify (e.g., in the case of polymer thin films, cross-link) the patterned liquid inside or immediately after exiting the gap region. The patterned structures are either connected by an intervening web as part of a polymer sheet, or separated into discreet micro-scale structures. Nanostructures (e.g., nanotubes or nanowires) disposed in the polymer become vertically oriented during the EHD patterning process. Segmented electrodes and patterned charges are utilized to provide digital patterning control.
摘要翻译：液体薄膜设置在将薄膜移动到精确控制的间隙（或辊隙）区域中的输送机表面（例如，辊或带）上，在该区域中液体薄膜经受电场，使得液体进行电液动力学（EHD）图案变形，由此部分液体薄膜形成具有微尺度图案形状的图案化液体特征。使用固化机构（例如，UV激光）将图案化液体固化（例如，在聚合物薄膜的情况下，将图案化的液体交联）在离开间隙区域之后或之后。图案化结构通过作为聚合物片材的一部分的介入纤维网连接，或分离成分立的微尺度结构。设置在聚合物中的纳米结构（例如，纳米管或纳米线）在EHD图案化工艺期间变得垂直取向。利用分段电极和图案化电荷来提供数字图案化控制。

8. 发明授权

US11912013B2 Charged particle generation, filtration, and delivery for digital offset printing applications 有权
公开(公告)号：US11912013B2
公开(公告)日：2024-02-27
申请号：US17152597
申请日：2021-01-19
申请人： Xerox Corporation , Palo Alto Research Center Incorporated
发明人： Kathryn F. Murphy , Thomas Wunderer , Anne Plochowietz , David K. Biegelsen , Joerg Martini , David Mathew Johnson , Palghat S. Ramesh
IPC分类号： B41F31/02 , B41M1/06 , B41F33/00 , B41F7/02 , B41F3/34 , B41F7/32 , B41F7/30
CPC分类号： B41F31/02 , B41F3/34 , B41F7/02 , B41F7/30 , B41F7/32 , B41F33/00 , B41M1/06
摘要： Ink-based digital printing systems useful for ink printing include a rotatable charge-retentive reimageable surface layer configured to receive a layer of fountain solution. The fountain solution is carried to the charge retentive surface by a fog or mist including fountain solution aerosol particles, dispersed gas particles, and charge directors that impart charge to the fountain solution aerosol particles. The charge-retentive reimageable surface may be charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged fountain solution adheres to portions of the charge-retentive reimageable surface according to the electrostatic latent image to form a fountain solution image thereon. The fountain solution image can be partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate.

9. 发明授权

US11905387B2 Functionalized graphene oxide curable formulations 有权
公开(公告)号：US11905387B2
公开(公告)日：2024-02-20
申请号：US17108170
申请日：2020-12-01
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： Junhua Wei , Gabriel Iftime , David Mathew Johnson , Jessica Louis Baker Rivest
IPC分类号： C08K3/04 , C01B32/198 , C08G59/50 , C08L63/00 , C08J5/18 , C08L33/10 , C07D303/24 , C07D493/22 , C07C69/54 , C08L33/08 , C08J5/00 , B29C64/00 , B33Y70/10
CPC分类号： C08K3/042 , B29C64/00 , B33Y70/10 , C01B32/198 , C07C69/54 , C07D303/24 , C07D493/22 , C08G59/50 , C08J5/005 , C08J5/18 , C08L33/08 , C08L33/10 , C08L63/00 , C08K3/042 , C08L63/00
摘要： A method of producing functionalized graphene oxide includes mixing graphene oxide with a reactive monomer containing at least one epoxy functional group and a secondary functional group that is selected from vinyl, acrylate, methacrylate, and epoxy to form a mixture, adding an activation agent, heating and stirring the mixture, cooling the mixture, separating the particles from the mixture, and drying the particles to produce functionalized graphene oxide. A method of manufacturing a cured polymer resin using functionalized graphene oxide includes mixing functionalized graphene oxide with a resin precursor to produce a functionalized graphene mixture, wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the functionalized graphene mixture and mixing to produce a formulation, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.

10. 发明授权

US11904277B2 Low dispersion, fast response mixing device 有权
公开(公告)号：US11904277B2
公开(公告)日：2024-02-20
申请号：US17080574
申请日：2020-10-26
申请人： PALO ALTO RESEARCH CENTER INCORPORATED
发明人： John Steven Paschkewitz , David Mathew Johnson
IPC分类号： B01D61/36 , B29C64/112 , B01F23/41 , B01F25/314 , B01F33/30 , B01F35/81 , B01F35/71
CPC分类号： B01D61/36 , B01F23/41 , B01F25/3141 , B01F25/31422 , B01F33/30 , B01F35/7176 , B01F35/81 , B29C64/112
摘要： A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a carrier fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.

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