Patents by Inventor Ed Friesen
Ed Friesen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210046757Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.Type: ApplicationFiled: October 14, 2020Publication date: February 18, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Lawrence H. White, Ed Friesen, Erik D. Torniainen
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Patent number: 10828892Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.Type: GrantFiled: April 27, 2015Date of Patent: November 10, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Rio Rivas, Lawrence H White, Ed Friesen, Erik D Torniainen
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Patent number: 10564171Abstract: A microfluidic diagnostic chip may comprise a substrate, a plurality of fluidic slots extending through the substrate, a plurality of microfluidic channels each coupled to a respective one of the plurality of fluidic slots to receive a plurality of fluids from the plurality of fluidic slots, and a mixing region in fluid communication with the plurality of fluidic slots to receive the plurality of fluids such that the plurality of fluids are to mix. A diagnostic chip may comprise a number of fluid slots defined through a substrate and a plurality of microfluidic channels coupled to the fluid slots to receive from the fluid slots a plurality of different fluids wherein the microfluidic channels combine and mix the plurality of different fluids.Type: GrantFiled: January 30, 2015Date of Patent: February 18, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Nicholas Matthew Cooper McGuinness, Chantelle Elizabeth Domingue, Manish Giri, Ed Friesen
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Patent number: 10479080Abstract: In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.Type: GrantFiled: September 2, 2018Date of Patent: November 19, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Anthony M. Fuller, Ed Friesen
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Patent number: 10369788Abstract: A fluid ejection device may include a substrate having front and back opposing surfaces and a slot extending through the substrate between the back and front surfaces and along an axis of the substrate. A recessed end region may be formed in the back surface at each end of the slot.Type: GrantFiled: December 15, 2016Date of Patent: August 6, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Ed Friesen, Terry McMahon, Donald W. Schulte, David Douglas Hall
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Patent number: 10369790Abstract: A fluid dispenser may include an array of fluid delivery assemblies. Each fluid delivery assembly may include orifices through which fluid is to be ejected and slots. Each slot extends to a respective one of the orifices. The slots have different geometric shapes.Type: GrantFiled: March 21, 2017Date of Patent: August 6, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Silam J. Choy, Garrett E. Clark, Rio Rivas, Ed Friesen, Kelly Ronk
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Publication number: 20190016135Abstract: In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.Type: ApplicationFiled: September 2, 2018Publication date: January 17, 2019Applicant: Hewlett-Packard Development Company, L.P.Inventors: Rio Rivas, Anthony M. Fuller, Ed Friesen
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Patent number: 10118392Abstract: A method of forming a substrate for a fluid ejection device includes forming an opening in the substrate from a second side toward a first side, and further forming the opening in the substrate to the first side, including increasing the opening to the first side and increasing the opening at the second side, and forming the opening with substantially parallel sidewalls intermediate the first side and the second side and converging sidewalls to the first side.Type: GrantFiled: April 6, 2018Date of Patent: November 6, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ed Friesen, Rio Rivas, Kelly Ronk
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Patent number: 10099483Abstract: A fluid ejection cartridge may include a substrate including substrate ribs that define fluid feed slots extending from a first side to a second side of the substrate, fluid chambers having nozzle openings on a first side of the substrate, an ejection element within each of the fluid chambers and a substrate carrier on a second side of the substrate. The substrate carrier may include carrier ribs that define fluid passageways having oblique centerlines and internal widths that gradually increase from a first width proximate the substrate to a second width, greater than the first width, distant the substrate. Concavely tapered adhesive bonds directly contact faces of the substrate ribs and the carrier ribs to adhere the substrate ribs to the carrier ribs.Type: GrantFiled: January 11, 2017Date of Patent: October 16, 2018Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Ed Friesen
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Patent number: 10086612Abstract: In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.Type: GrantFiled: September 7, 2017Date of Patent: October 2, 2018Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Anthony M. Fuller, Ed Friesen
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Publication number: 20180229502Abstract: A method of forming a substrate for a fluid ejection device includes forming an opening in the substrate from a second side toward a first side, and further forming the opening in the substrate to the first side, including increasing the opening to the first side and increasing the opening at the second side, and forming the opening with substantially parallel sidewalls intermediate the first side and the second side and converging sidewalls to the first side.Type: ApplicationFiled: April 6, 2018Publication date: August 16, 2018Inventors: Ed Friesen, Rio Rivas, Kelly Ronk
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Patent number: 10005282Abstract: Fluid ejection devices with particle tolerant thin-film extensions are disclosed. An example apparatus includes a printer; a reservoir; and a printhead including: a firing chamber; a channel to receive fluid from the reservoir, the channel is coupled to the firing chamber, the channel having an opening; and a particle-tolerant film disposed adjacent the opening of the channel, the particle-tolerant film disposed between the channel and the reservoir, the particle-tolerant film to deter particles within the fluid from settling in an area adjacent the opening.Type: GrantFiled: December 3, 2015Date of Patent: June 26, 2018Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Ed Friesen, Kellie Susanne Jensen
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Patent number: 9962938Abstract: A method of forming a substrate for a fluid ejection device includes forming an opening in the substrate from a second side toward a first side, and further forming the opening in the substrate to the first side, including increasing the opening to the first side and increasing the opening at the second side, and forming the opening with substantially parallel sidewalls intermediate the first side and the second side and converging sidewalls to the first side.Type: GrantFiled: February 13, 2013Date of Patent: May 8, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ed Friesen, Rio Rivas, Kelly Ronk
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Publication number: 20180024155Abstract: A microfluidic diagnostic chip may comprise a substrate, a plurality of fluidic slots extending through the substrate, a plurality of microfluidic channels each coupled to a respective one of the plurality of fluidic slots to receive a plurality of fluids from the plurality of fluidic slots, and a mixing region in fluid communication with the plurality of fluidic slots to receive the plurality of fluids such that the plurality of fluids are to mix. A diagnostic chip may comprise a number of fluid slots defined through a substrate and a plurality of microfluidic channels coupled to the fluid slots to receive from the fluid slots a plurality of different fluids wherein the microfluidic channels combine and mix the plurality of different fluids.Type: ApplicationFiled: January 30, 2015Publication date: January 25, 2018Applicant: Hewlett-Packard Development Company, L.P.Inventors: Nicholas Matthew Cooper McGuinness, Chantelle Elizabeth Domingue, Manish Giri, Ed Friesen
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Publication number: 20180009222Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.Type: ApplicationFiled: April 27, 2015Publication date: January 11, 2018Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Lawrence H White, Ed Friesen, Erik D Torniainen
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Publication number: 20170361613Abstract: In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.Type: ApplicationFiled: September 7, 2017Publication date: December 21, 2017Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Anthony M. Fuller, Ed Friesen
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Patent number: 9776407Abstract: In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.Type: GrantFiled: April 30, 2013Date of Patent: October 3, 2017Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Anthony M. Fuller, Ed Friesen
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Patent number: 9707586Abstract: In an embodiment, a method of forming a printhead includes forming on a front-side surface of a substrate, a thin film layer and a plurality of fluidic channels and ejection chambers. The method also includes forming a slot through the substrate from the back-side surface to the front-side surface, where the back-side and front-side surfaces generally oppose one another. The slot has a length extending along a long axis of the substrate and a width extending along a short axis of the substrate. The method includes forming recessed regions into the back-side surface of the substrate at both ends of the slot that extend beyond the length of the slot.Type: GrantFiled: March 16, 2012Date of Patent: July 18, 2017Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Rio Rivas, Ed Friesen, Terry McMahon, Donald W. Schulte, David Douglas Hall
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Publication number: 20170190177Abstract: A fluid dispenser may include an array of fluid delivery assemblies, Each fluid delivery assembly may include orifices through which fluid is to be ejected and slots. Each slot extends to a respective one of the orifices. The slots have different geometric shapes.Type: ApplicationFiled: March 21, 2017Publication date: July 6, 2017Inventors: Silam J. Choy, Garrett E. Clark, Rio Rivas, Ed Friesen, Kelly Ronk
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Publication number: 20170157925Abstract: A fluid ejection device may include a substrate having front and back opposing surfaces and a slot extending through the substrate between the back and front surfaces and along an axis of the substrate. A recessed end region may be formed in the back surface at each end of the slot.Type: ApplicationFiled: December 15, 2016Publication date: June 8, 2017Inventors: Rio Rivas, Ed Friesen, Terry McMahon, Donald W. Schulte, David Douglas Hall