Patents by Inventor Evan Griffiths

Evan Griffiths 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).

  • Patent number: 11221685
    Abstract: A magneto-electrophoretic medium that can be globally and locally addressed and erased. The medium provides a writeable display with no perceivable lag and the ability to write and erase with only minimal power requirements. In particular, the magneto-electrophoretic medium can be erased by providing a subthreshold electric stimulus and supplementing a second non-electric stimulus that disturbs the written state and allows the magneto-electrophoretic particles to return to their original state.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 11, 2022
    Assignee: E Ink Corporation
    Inventors: Crystal Nguyen, Evan Griffith, Seth J. Bishop, Stephen J. Telfer, Kosta Ladavac, Andrew A. Drabek, Sunil Krishna Sainis, Richard J. Paolini, Jr., Samantha Morrill
  • Patent number: 11086417
    Abstract: A stylus for interacting with a magnetic writing medium, such as a magneto-electrophoretic media containing magnetic particles that can be switched electrically in the same way as a conventional electrophoretic display: e.g., between white and black states with the capability of also attaining stable intermediate states of gray. The stylus includes a magnetic sphere and a metal cylinder aligned in the tip.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: August 10, 2021
    Assignee: E Ink Corporation
    Inventors: Evan Griffith, Samantha Morrill, Richard J. Paolini, Jr.
  • Publication number: 20210041967
    Abstract: A stylus for interacting with a magnetic writing medium, such as a magneto-electrophoretic media containing magnetic particles that can be switched electrically in the same way as a conventional electrophoretic display: e.g., between white and black states with the capability of also attaining stable intermediate states of gray. The stylus includes a magnetic sphere and a metal cylinder aligned in the tip.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 11, 2021
    Inventors: Evan GRIFFITH, Samantha MORRILL, Richard J. PAOLINI, JR.
  • Publication number: 20200201454
    Abstract: A magneto-electrophoretic medium that can be globally and locally addressed and erased. The medium provides a writeable display with no perceivable lag and the ability to write and erase with only minimal power requirements. In particular, the magneto-electrophoretic medium can be erased by providing a subthreshold electric stimulus and supplementing a second non-electric stimulus that disturbs the written state and allows the magneto-electrophoretic particles to return to their original state.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Inventors: Crystal NGUYEN, Evan GRIFFITH, Seth J. BISHOP, Stephen J. TELFER, Kosta LADAVAC, Andrew A. DRABEK, Sunil Krishna SAINIS, Richard J. PAOLINI, JR., Samantha MORRILL
  • Publication number: 20180007144
    Abstract: A REST-based event distribution system is described, with particular applicability to the distribution of distributed filesystem notifications over a high-latency best-effort network such as the Internet. In one embodiment, event channels are mapped to URL spaces and created and distributed through the use of HTTP POST and GET requests. The system is optimized for short polling by clients; an event history is maintained to buffer messages and maintain the idempotence of requests. In another embodiment, the events are registered as a SIP event pack allowing for the distribution of filesystem events.
    Type: Application
    Filed: May 16, 2017
    Publication date: January 4, 2018
    Inventor: Kurt Evan Griffiths
  • Patent number: 9654566
    Abstract: A REST-based event distribution system is described, with particular applicability to the distribution of distributed filesystem notifications over a high-latency best-effort network such as the Internet. In one embodiment, event channels are mapped to URL spaces and created and distributed through the use of HTTP POST and GET requests. The system is optimized for short polling by clients; an event history is maintained to buffer messages and maintain the idempotence of requests. In another embodiment, the events are registered as a SIP event pack allowing for the distribution of filesystem events.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: May 16, 2017
    Assignee: Rackspace US, Inc.
    Inventor: Kurt Evan Griffiths
  • Publication number: 20140280852
    Abstract: A REST-based event distribution system is described, with particular applicability to the distribution of distributed filesystem notifications over a high-latency best-effort network such as the Internet. In one embodiment, event channels are mapped to URL spaces and created and distributed through the use of HTTP POST and GET requests. The system is optimized for short polling by clients; an event history is maintained to buffer messages and maintain the idempotence of requests. In another embodiment, the events are registered as a SIP event pack allowing for the distribution of filesystem events.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 18, 2014
    Applicant: Rackspace US, Inc .
    Inventor: Kurt Evan Griffiths
  • Patent number: 8751639
    Abstract: A REST-based event distribution system is described, with particular applicability to the distribution of distributed filesystem notifications over a high-latency best-effort network such as the Internet. In one embodiment, event channels are mapped to URL spaces and created and distributed through the use of HTTP POST and GET requests. The system is optimized for short polling by clients; an event history is maintained to buffer messages and maintain the idempotence of requests. In another embodiment, the events are registered as a SIP event pack allowing for the distribution of filesystem events.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: June 10, 2014
    Assignee: Rackspace US, Inc.
    Inventor: Kurt Evan Griffiths
  • Publication number: 20120278473
    Abstract: A REST-based event distribution system is described, with particular applicability to the distribution of distributed filesystem notifications over a high-latency best-effort network such as the Internet. In one embodiment, event channels are mapped to URL spaces and created and distributed through the use of HTTP POST and GET requests. The system is optimized for short polling by clients; an event history is maintained to buffer messages and maintain the idempotence of requests. In another embodiment, the events are registered as a SIP event pack allowing for the distribution of filesystem events.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Applicant: Rackspace US, Inc.
    Inventor: Kurt Evan Griffiths
  • Patent number: 4329861
    Abstract: A dry lubricated wire drawing and cooling apparatus comprising a die holder supporting a pair of dies in coaxially aligned and axially spaced relation. The die holder and dies cooperate to define a cooling chamber through which cooling liquid is circulated and drawn wire is constrained to pass. A sensing device detects approach of a wire end and operates mechanism to shutdown the apparatus and expel cooling liquid from the cooling chamber before the wire end reaches the first one of the dies.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: May 18, 1982
    Assignee: Orion Machinery and Engineering Corporation
    Inventor: Evan Griffiths
  • Patent number: 4094180
    Abstract: A multiple stage wire drawing machine having a final stage draw block and a plurality of multiple step draw capstan assemblies each having a plurality of coaxial draw capstans of increasing diameter rotatably mounted on a drive spindle, driven at a fixed angular rate relative to the final stage draw block, and independently driven by the spindle through friction disc slip couplings at substantially the same slip drive torque.
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: June 13, 1978
    Assignee: Amtel, Inc.
    Inventor: Evan Griffiths
  • Patent number: 4045992
    Abstract: A multiple stage wire drawing system with a plurality of pivotal dancer pulleys, each operable for maintaining wire stock tension between stages and for feeding wire stock downwardly along a generally helical path from an upper guide pulley receiving wire stock from a preceding draw block to a lower coaxial guide pulley aligned for guiding wire stock to a succeeding die block. Each pivotal dancer pulley is mounted via a support rotor on a relatively short pivot arm and for rotation about an axis inclined to its pivot axis, and a toggle type linkage is connected to the dancer pulley support rotor for controlling the angular relationship of the inclined dancer pulley to the coaxial guide pulleys.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: September 6, 1977
    Assignee: Amtel, Inc.
    Inventor: Evan Griffiths