Patents by Inventor Daniel Callejo

Daniel Callejo 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).

  • Ink storage unit having variable volume reservoirs
    Patent number: 10850521
    Abstract: Herein is disclosed an ink storage unit. The ink storage unit may comprise first and second reservoirs, each having a variable internal volume; a transfer system to transfer ink between the first and second reservoirs such that as ink is transferred from the first reservoir to the second reservoir, the internal volume of the first reservoir decreases and the internal volume of the second reservoir increases.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 1, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Barret Kammerzell, Marta Coma Vives, Daniel Callejo, Guillem Montero Costa
  • INK STORAGE UNIT HAVING VARIABLE VOLUME RESERVOIRS
    Publication number: 20180290454
    Abstract: Herein is disclosed an ink storage unit. The ink storage unit may comprise first and second reservoirs, each having a variable internal volume; a transfer system to transfer ink between the first and second reservoirs such that as ink is transferred from the first reservoir to the second reservoir, the internal volume of the first reservoir decreases and the internal volume of the second reservoir increases.
    Type: Application
    Filed: October 29, 2015
    Publication date: October 11, 2018
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Barrett Kammerzell, Marta Coma Vives, Daniel Callejo, Guillem Montero Costa