Patents by Inventor Michael W. Cumbie
Michael W. Cumbie 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: 20240226878Abstract: An example overfill-tolerant microfluidic structure can include an inlet microfluidic channel. A sample chamber can be connected to the inlet microfluidic channel to receive liquid from the inlet microfluidic channel. A gas-permeable liquid barrier can be connected to the sample chamber and positioned to allow gas to flow out of the sample chamber. An overflow chamber can be connected to the inlet microfluidic channel. A capillary break can be positioned between the inlet microfluidic channel and the overflow chamber. The capillary break can include a narrowed opening with a smaller width than a width of the inlet microfluidic channel. In some examples, the gas-permeable liquid barrier can allow gas to flow out of the sample chamber at a pressure lower than the break pressure, and prevent liquid from flowing out of the sample chamber at the break pressure.Type: ApplicationFiled: May 7, 2021Publication date: July 11, 2024Applicant: Hewlett-Packard Development Company, L.P.Inventors: Michael W. Cumbie, Viktor Shkolnikov, Brian J. Keefe
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Patent number: 11975468Abstract: In various examples, a printbar is formed from multiple modular fluid ejection subassemblies joined together through a molding process that provides for a continuous planar substrate surface. A mold may secure the modular fluid ejection subassemblies during a molding process in which a runner conveys a molding material to seams between the joined modular fluid ejection subassemblies.Type: GrantFiled: July 26, 2019Date of Patent: May 7, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Chien-Hua Chen, Si-lam J. Choy, Michael W. Cumbie
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Patent number: 11969995Abstract: A fluid ejection device includes a plurality of fluid actuation devices, a plurality of memory cells, and a configuration register. Each memory cell of the plurality of memory cells corresponds to a fluid actuation device of the plurality of fluid actuation devices. The configuration register stores data to enable or disable access to the plurality of memory cells.Type: GrantFiled: July 14, 2023Date of Patent: April 30, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Patent number: 11958293Abstract: In some examples, a fluid ejection die includes a plurality of nozzles arranged in a plurality of nozzle columns, the plurality of nozzle columns distributed across a width of the fluid ejection die in a staggered manner, wherein nozzles of each respective nozzle column of the plurality of nozzle columns are spaced apart along a length of the fluid ejection die, wherein the plurality of nozzle columns includes a first pair of neighboring nozzle columns that are spaced by a first distance across the width. The plurality of nozzle columns includes a second pair of neighboring nozzle columns that are spaced by a second distance across the width, the second distance being larger than the first distance.Type: GrantFiled: June 3, 2021Date of Patent: April 16, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Galen Cook, Garrett E Clark, Michael W Cumbie, James R Przybyla, Richard Seaver, Frank D Derryberry, Si-lam J Choy
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Publication number: 20240116293Abstract: An integrated circuit includes a plurality of memory cells, an address decoder to select memory cells based on a data signal, activation logic to activate selected memory cells based on the data signal and a fire signal, and configuration logic to enable or disable access to the plurality of memory cells.Type: ApplicationFiled: December 21, 2023Publication date: April 11, 2024Applicant: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Publication number: 20240116055Abstract: An example digital microfluidic device can include a hydrophobic electrowetting surface including an array of electrodes. The individual electrodes can have a shape with three or more sides. The array of electrodes can include a parking electrode and an adjacent electrode that is adjacent to the parking electrode. A cover can be positioned over the electrowetting surface at a gap distance sufficient to accommodate a liquid droplet between the cover and the electrowetting surface. A plurality of droplet barriers can be positioned on three or more sides of the parking electrode. The droplet barriers can constrain movement of a liquid droplet from the parking electrode to the adjacent electrode.Type: ApplicationFiled: October 6, 2022Publication date: April 11, 2024Applicant: Hewlett-Packard Development Company, L.P.Inventors: Michael W. Cumbie, Chien-Hua Chen, Viktor Shkolnikov
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Patent number: 11938722Abstract: A fluid ejection device includes a plurality of fluid actuation devices, a plurality of memory cells, and a configuration register. Each memory cell of the plurality of memory cells corresponds to a fluid actuation device of the plurality of fluid actuation devices. The configuration register stores data to enable or disable access to the plurality of memory cells.Type: GrantFiled: September 10, 2021Date of Patent: March 26, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Patent number: 11912024Abstract: A print component integrated circuitry package includes a number of temperature sensors where each of the plurality of the temperature sensors is disposed in a corresponding temperature region of an integrated circuitry. In an example, an analog sense bus conductively connects to all of the plurality of temperature sensors and an external sensor pad that is to connect to a corresponding print controller contact.Type: GrantFiled: September 23, 2022Date of Patent: February 27, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Michael W. Cumbie, James Michael Gardner, Scott A. Linn, George H. Corrigan, III
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Patent number: 11904312Abstract: The present disclosure is drawn to microfluidic devices. A microfluidic device can include a substrate, a lid mounted to the substrate, and a microchip mounted to the substrate. The lid mounted to the substrate can form a discrete microfluidic chamber between structures including an interior surface of the lid and a portion of the substrate. The lid can include an inlet and a vent positioned relative to one another to facilitate loading of fluid to the discrete microfluidic chamber via capillary action. A portion of the microchip can be positioned within the discrete microfluidic chamber.Type: GrantFiled: November 22, 2017Date of Patent: February 20, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hilary Ely, Adam Higgins, Rachel M. White, Erik D. Torniainen, Tod Woodford, Michael W. Cumbie, Chien-Hua Chen
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Publication number: 20240050974Abstract: In some examples, a fluid dispensing device includes a fluid chamber, a heating element adjacent the fluid chamber, and an orifice adjacent the fluid chamber. A ratio of an area of a surface of the heating element to an orifice area of the orifice is greater than or equal to 3, where the surface of the heating element faces the fluid chamber.Type: ApplicationFiled: March 9, 2021Publication date: February 15, 2024Applicant: Hewlett-Packard Development Company, L.P.Inventors: Alexander N. Govyadinov, Michael W. CUMBIE, Craig A. OLBRICH, Erik D. TORNIAINEN, Omer GILA
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Patent number: 11897259Abstract: A fluid ejection device includes a plurality of fluid actuation devices, a plurality of memory cells, and a configuration register. Each memory cell of the plurality of memory cells corresponds to a fluid actuation device of the plurality of fluid actuation devices. The configuration register stores data to enable or disable access to the plurality of memory cells.Type: GrantFiled: September 10, 2021Date of Patent: February 13, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Publication number: 20230391086Abstract: An example device may comprise a molded structure and a dependent device coupled to the molded structure. The molded structure comprises thermo-electric traces and channels. The channels are between ten ?m and two hundred ?m, or less in one dimension. The dependent device comprises apertures corresponding to the channels and through which fluids, electromagnetic radiation, or a combination thereof is to travel. The dependent device also comprises contacts corresponding to the thermo-electric traces of the molded structure.Type: ApplicationFiled: August 23, 2023Publication date: December 7, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Chien-Hua Chen, Michael W. Cumbie, Michael G. Groh
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Publication number: 20230356527Abstract: In various examples, a fluid ejection device may include a fluid ejection die formed with a first material and that includes a bondpad and a plurality of fluid ejectors, and a cover layer adjacent the fluid ejection die. The cover may be formed with a second material that is different than the first material and may include a first region that overlays the bondpad and a second region that overlays the plurality of fluid ejectors. In various examples, the first and second regions are separated by a break in the cover layer. The break may be filled with a third material that is different than one or both of the first and second material.Type: ApplicationFiled: July 14, 2023Publication date: November 9, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Michael W. Cumbie, Anthony M. Fuller, Chien-Hua Chen
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Publication number: 20230356525Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a status register, a plurality of interfaces, and control logic. The plurality of interfaces include a mode interface, a data interface, and a fire interface. The control logic enables reading of the status register in response to a signal on the mode interface transitioning to logic high with a logic high signal on the data interface, and transitioning a signal on the fire interface to logic high with the signal on the single data interface floating.Type: ApplicationFiled: July 21, 2023Publication date: November 9, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Publication number: 20230356524Abstract: A fluid ejection device includes a plurality of fluid actuation devices, a plurality of memory cells, and a configuration register. Each memory cell of the plurality of memory cells corresponds to a fluid actuation device of the plurality of fluid actuation devices. The configuration register stores data to enable or disable access to the plurality of memory cells.Type: ApplicationFiled: July 14, 2023Publication date: November 9, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Patent number: 11807005Abstract: In some examples, a fluid ejection die includes a plurality of nozzles arranged in a plurality of nozzle columns, the plurality of nozzle columns distributed across a width of the fluid ejection die in a staggered manner, wherein nozzles of each respective nozzle column of the plurality of nozzle columns are spaced apart along a length of the fluid ejection die, wherein the plurality of nozzle columns includes a first pair of neighboring nozzle columns that are spaced by a first distance across the width. The plurality of nozzle columns includes a second pair of neighboring nozzle columns that are spaced by a second distance across the width, the second distance being larger than the first distance.Type: GrantFiled: March 28, 2023Date of Patent: November 7, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Galen Cook, Garrett E. Clark, Michael W. Cumbie, James R. Przybyla, Richard Seaver, Frank D. Derryberry, Si-Lam J. Choy
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Patent number: 11780227Abstract: At times, devices, such as semiconductor devices, may be attached to molded structures. The molded structure may have through holes or channels through which fluids and gasses (among other things) may travel, A number of processes exist for creating molded structures with through holes or channels. For instance, build up processes, such as lithography on dry film, may be used to create molded structures with through holes or channels. Substrate bonding and/or welding may also be used to yield molded structures with through holes or channels.Type: GrantFiled: June 25, 2019Date of Patent: October 10, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Chien-Hua Chen, Michael W Cumbie, Michael G Groh
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Publication number: 20230302790Abstract: A die for a printhead is provided in examples. The die includes a number of fluidic actuator arrays. A data block is associated with each of the plurality of fluidic actuator arrays. The die includes an interface comprising a data pad and a clock pad, wherein a data bit value present at the data pad is loaded into a first data block corresponding to a first fluidic actuator array on a rising clock edge and loaded into a second data block corresponding to a second fluidic actuator array on a falling clock edge.Type: ApplicationFiled: May 25, 2023Publication date: September 28, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Patent number: 11760085Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a configuration register, a plurality of interfaces, and control logic. The plurality of interfaces include a mode interface and a data interface. The control logic enables writing to the configuration register in response to a signal on the mode interface transitioning to logic high with a logic high signal on the data interface.Type: GrantFiled: February 6, 2019Date of Patent: September 19, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
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Patent number: 11745507Abstract: In various examples, a fluid ejection device may include a fluid ejection die formed with a first material and that includes a bondpad and a plurality of fluid ejectors, and a cover layer adjacent the fluid ejection die. The cover may be formed with a second material that is different than the first material and may include a first region that overlays the bondpad and a second region that overlays the plurality of fluid ejectors. In various examples, the first and second regions are separated by a break in the cover layer. The break may be filled with a third material that is different than one or both of the first and second material.Type: GrantFiled: April 29, 2019Date of Patent: September 5, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Michael W. Cumbie, Anthony M. Fuller, Chien-Hua Chen