Patents Assigned to Hewlett-Packard Development Company, L.P.
  • Publication number: 20250077717
    Abstract: A radio frequency (RF) tamper detector of an electronic device can offer improved chassis intrusion monitoring to protect the device from software and hardware-based tampering. The tamper detector can monitor RF noise levels in a first frequency band and in a second frequency band to calculate an RF noise level moving average for each frequency band. If the moving averages in both frequency bands exceed a RF noise threshold, the tamper detector can set a cover removal flag to indicate that a cover of the device housing has been removed. The tamper detector can cause the electronic device to lock or disable a system BIOS when cover removal is detected. Additionally, the electronic device can notify remote monitoring systems (e.g., operated by an IT administrator or warranty support center) to receive additional instructions to secure the device.
    Type: Application
    Filed: September 6, 2023
    Publication date: March 6, 2025
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Xin-Chang Chen, He-Di Liu, Hsin-Chih Lin, Ming Hsuan Hsieh
  • Publication number: 20250077675
    Abstract: An example apparatus may include a hardware component, a memory, and a processor. The processor may retrieve a firmware for the hardware component subsequent to the firmware being loaded on the hardware component. The processor may determine that a firmware signature associated with the firmware is stored in the memory. In some examples, in response to a determination that the firmware signature associated with the firmware is stored in the memory, the processor may initiate authentication of the firmware.
    Type: Application
    Filed: June 24, 2020
    Publication date: March 6, 2025
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: CHRISTOPHER H STEWART, BARANEEDHARAN ANBAZHAGAN
  • Patent number: 12244993
    Abstract: A headset charging dock includes a headset mechanical support configured to hang a first headset by a headband of the first headset; and a wireless charging interface for the first headset, the wireless charging interface integrated in the headset mechanical support.
    Type: Grant
    Filed: October 23, 2023
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John A. Kelley, Jacob T. Meyberg Guzman, Nicholas W. Paterson, David Laniado Lacarra, Rogers Van Buren Clark, III, Roman M. Duran, Darrin Caddes, Bowman Wang, John B. Ledingham, Dave Hansung Kim
  • Patent number: 12240719
    Abstract: In many continuously webbed machines, media is fed through the machine with rollers mounted to one or more rotating shafts. These shafts may be supported on each end with a cylindrical journal bearing. The rollers move at the same rate as the media to maintain traction with the media to control media position as it moves the media from one process to another through the sequence of processes in the webbed machine.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: March 4, 2025
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Ronald R. Anderson
  • Patent number: 12240169
    Abstract: This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of testing powder bed material for contamination. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detector solution. The fusing agent can include water, an electromagnetic radiation absorber, and a first pigment reactant. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The detector solution can include water and a second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a colored pigment.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Emre Hiro Discekici, Graciela Emma Negri Jimenez, Shannon Reuben Woodruff, Alay Yemane, Jacob Wright
  • Patent number: 12240239
    Abstract: A microfluidic die may include a microfluidic passage and a protective layer provided adjacent to internal surfaces of the microfluidic passage. The protective layer may include a protective nano-crystalline material and a protective amorphous matrix encapsulating the protective nano-crystalline material.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Juan Carlos Ramos, Stefan Enrique Lucchini
  • Patent number: 12240245
    Abstract: In an example, a logic circuit comprising a communications interface including a data contact to communicate via a communications bus, an enablement contact, separate from the communication interface, to receive an input to enable the logic circuit, and at least one memory register, comprising at least one reconfigurable address register. The logic circuit may be configured, such that, when enabled, it responds to communications sent via the communication bus which are addressed to the address held in a reconfigurable address register.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James Michael Gardner, Scott A. Linn, Stephen D. Panshin, Jefferson P. Ward, David Owen Roethig
  • Patent number: 12240230
    Abstract: In an example a method comprises operating, by a processor, on a first quantity that is proportional to a side of a parallelogram printed, at least in part, on a substrate by a fluidic die, the side of the parallelogram being substantially perpendicular to the direction of advancement of the substrate. The method further comprises operating, by a processor, on a second quantity and a third quantity, the second and third quantities respectively being proportional to the length of the lines bisecting the parallelogram. The method comprises calculating, by a processor, an angle that the fluidic die makes with the direction of advancement of the substrate based on the first, second, and third quantities.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 4, 2025
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: David Peinado Gutierrez, Ferran Olivera Corpas, David Vendrell Tornero
  • Patent number: 12240231
    Abstract: A fluidic die including an array of fluid actuating devices addressable by a set of addresses, and an array of memory elements including a first portion to receive a first set of address bits representative of a first portion of an address of the set of addresses, and a second portion to receive a second set of address bits representative of a second portion of the address of the set of addresses. A first address driver is to provide a first portion of the address of the set of addresses based on the first set of address bits received by the first portion of memory elements, and a second address driver is to provide a remaining portion of the address of the set of addresses based on a second set of address bits received by the second portion of memory elements.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Scott A. Linn, James Michael Gardner, Michael W. Cumbie
  • Patent number: 12240237
    Abstract: In example implementations, a printhead die is provided. The printhead die includes a substrate, a chamber layer formed on the substrate, a plurality of printing fluid ejection chambers coupled to opposite sides of the chamber layer and along a length of the chamber layer, and a top hat layer formed on the chamber layer and the plurality of printing fluid ejection chambers. The chamber layer includes a void to store printing fluid. The top hat layer includes an initial unsupported top hat layer portion over the void, wherein the initial unsupported top hat layer portion comprises a first end that is narrower than a second end.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: March 4, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vincent C. Korthuis, Huyen Pham, Tsuyoshi Yamashita
  • Publication number: 20250066583
    Abstract: An example of an ultraviolet (UV) light fusing agent for three-dimensional (3D) printing includes a vehicle and a multi-functional antioxidant and UV light absorber dispersed in the vehicle. The vehicle includes water and a water miscible or water soluble organic solvent. The multi-functional antioxidant and UV light absorber includes a metal oxide particle that is to absorb UV radiation having a wavelength within a range from about 330 nm to about 405 nm and a passivating agent complexed with at least a portion of a surface of the metal oxide.
    Type: Application
    Filed: April 24, 2020
    Publication date: February 27, 2025
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Emre Hiro Discekici, Shannon Reuben Woodruff, Krzysztof Nauka, Vladek P. Kasperchik
  • Publication number: 20250068715
    Abstract: An example computing device comprises a memory to store control instructions, and a processor to: perform a first authentication of the control instructions using a first key; and in response to receipt of a command to enable a second authentication of the control instructions, add a second key to a one-time programmable portion of the memory, wherein the command is signed using the first key, the second key to perform a second authentication of the control instructions with the first key to perform the first authentication of the control instructions.
    Type: Application
    Filed: January 13, 2022
    Publication date: February 27, 2025
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey Kevin Jeansonne, Mason Andrew Gunyuzlu
  • Publication number: 20250068801
    Abstract: Examples of methods are described herein. In some examples, a method includes determining a graph representation of a three-dimensional (3D) object. In some examples, the graph representation includes nodes and edges associated with the nodes. In some examples, each node includes a temperature profile attribute. In some examples, the method includes predicting, using a machine learning model, a deformation of the 3D object based on the graph representation.
    Type: Application
    Filed: January 4, 2022
    Publication date: February 27, 2025
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Lei CHEN, Chuang GAN, Jun ZENG, Carlos Alberto LOPEZ COLLIER LA MARLIERE, Yu XU, Zi-Jiang YANG
  • Patent number: 12233597
    Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing kit includes a fusing agent and a build material reactive functional agent. The fusing agent includes water and an electromagnetic radiation absorber. The build material reactive functional agent includes a vehicle and trifluoroacetic anhydride. The multi-fluid kit may also be part of a 3D printing kit.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Graciela E Negri Jimenez, Shannon Reuben Woodruff, Emre Hiro Discekici
  • Patent number: 12233457
    Abstract: Examples of a three-dimensional (3D) printing kit include a particulate build material and a binder fluid. The particulate build material includes from about 80 wt % to 100 wt % metal particles based on a total weight of the particulate build material. In some examples, the binder fluid includes water, polymer particles in an amount ranging from about 1 wt % to about 40 wt % based on a total weight of the binder fluid, and a blocked polyisocyanate adhesion promoter in an amount ranging from about 0.05 wt % to about 5 wt % based on the total weight of the binder fluid. In some other examples, the binder fluid includes water and the polymer particles, and the 3D printing kit further includes an adhesion promoter fluid which includes water and the blocked polyisocyanate adhesion promoter.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Tienteh Chen, Dennis Z. Guo
  • Patent number: 12233654
    Abstract: Examples in accordance with the present disclosure are directed to a method including generating a negative fluid pressure between a fluid supply and a first port of a fluidic ejection device, and generating a positive fluid pressure between the fluid supply and a second port of the fluidic ejection device. The method further includes selectively activating a first priming pump connected to the first port in response to an indication that the first port is transitioning from an open state to a closed state, wherein the selective activation of the first priming pump causes the first port to remain in the open state and causes fluid within the fluidic ejection device to exit through the first port and to recirculate along a fluid flow path.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mauricio Seras Franzoso, Dorkaitz Alain Vazquez Fernandez, David Butinya Teixido
  • Patent number: 12233645
    Abstract: A fluidic die includes fluid-transfer elements, and a temperature sensor to monitor a temperature on the fluidic die. The fluidic die includes a trickle-warming circuit to warm fluid transferrable by the fluid-transfer elements, and a pulse-warming circuit to warm the fluid. A warming control circuit selectively activates the trickle-warming and pulse-warming circuits.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric Thomas Martin, Garrett E. Clark, Jeremy Spencer, Vincent C. Korthuis, Rogelio Cicili
  • Patent number: 12233415
    Abstract: Examples herein involve amplification and detection of nucleic acids using a microfluidic reaction chamber. An example apparatus includes a reaction-chamber circuit to process a reagent and a biologic sample for amplification of nucleic acids. The apparatus further includes a plurality of capillaries to pass the reagent and the biologic sample through the microfluidic reaction chamber. A valve control system may selectively control each of a plurality of valves to cause the reagent and the biologic sample to selectively move through the microfluidic reaction chamber for the amplification of the nucleic acids according to a particular timing sequence. In various examples, a trapping region disposed in the microfluidic reaction chamber secures the nucleic acids in the microfluidic reaction chamber for amplification using the reaction-chamber circuit.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Si-lam Choy, Hilary Ely, John Lahmann
  • Patent number: 12233598
    Abstract: A fluid ejection device may include a fluid ejection die including nozzles and fluid feed holes. Each nozzle may have a nozzle orifice formed in a top surface of the fluid ejection die. The fluid feed holes may be formed in a bottom surface of the fluid ejection die and fluidly connected to the nozzles. The fluid ejection device may include a molded panel into which the fluid ejection die is at least partially embedded, the molded panel having a fluid slot formed therethrough such that the fluid slot is fluidly connected to the fluid feed holes of the fluid ejection die, the molded panel formed with a mold chase and a release liner coupled to and at least partially covering an interior surface of the mold chase, the mold chase having a fluid slot feature corresponding to the fluid slot.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: February 25, 2025
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Michael W. Cumbie
  • Patent number: 12233644
    Abstract: A method is described in which a difference in height is determined between a current position and a calibration position of a printhead of a printer. An alignment value for the printhead is then determined based on the difference.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: February 25, 2025
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Javier Castro Soriano, Nestor Luid Pinol, Carles Carmona Calpe, David Vendrell Tornero