Patents by Inventor Yen-Chao Chung

Yen-Chao Chung 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).

  • Spring back safety and film cutter
    Patent number: 9956695
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: May 1, 2018
    Assignee: PACIFIC HANDY CUTTER, INC.
    Inventors: Yen-Chao Chung, Joseph P. Garavaglia, Glen Kanemoto, Markus Gropl, Dave Puglisi, Mark Marinovich
  • Pocket safety cutter
    Patent number: 9539733
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: January 10, 2017
    Assignee: PACIFIC HANDY CUTTER, INC.
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Spring Back Safety and Film Cutter
    Publication number: 20150202781
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Application
    Filed: September 1, 2014
    Publication date: July 23, 2015
    Inventors: Yen-Chao Chung, Joseph P. Garavaglia, Glen Kanemoto, Markus Gropl, Dave Puglisi, Mark Marinovich
  • Spring back safety and film cutter
    Patent number: 8819942
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Grant
    Filed: December 3, 2011
    Date of Patent: September 2, 2014
    Assignee: Pacific Handy Cutter, Inc.
    Inventors: Yen-Chao Chung, Joe Garavaglia, Glen Kanemoto, Markus Gropl, Dave Puglisi, Mark Marinovich
  • Pocket Safety Cutter
    Publication number: 20140123501
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Application
    Filed: May 20, 2013
    Publication date: May 8, 2014
    Applicant: Pacific Handy Cutter, Inc.
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Pocket safety cutter
    Patent number: 8443522
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: May 21, 2013
    Assignee: Pacific Handy Cutter, Inc.
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Spring Back Safety and Film Cutter
    Publication number: 20120216412
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Application
    Filed: December 3, 2011
    Publication date: August 30, 2012
    Inventors: Yen-Chao Chung, Joe Garavaglia, Glen Kanemoto, Marks Gropl, Dave Puglisi, Mark Marinovich
  • Pocket Safety Cutter
    Publication number: 20120047747
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Spring back safety and film cutter
    Patent number: 8069571
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: December 6, 2011
    Assignee: Pacific Handy Cutter, Inc.
    Inventors: Yen-Chao Chung, Joe Garavaglia, Glen Kanemoto, Markus Gropl, Dave Puglisi, Mark Marinovich
  • Pocket safety cutter
    Patent number: 8006389
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: August 30, 2011
    Assignee: Pacific Handy Cutter, Inc.
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Spring Back Safety and Film Cutter
    Publication number: 20090266210
    Abstract: A cutter apparatus includes a housing shaped to be hand-held, a slider configured to support a front blade, the slider being mechanically coupled to the housing and configured to be moved longitudinally along the housing, and a blade guard mechanically coupled to the housing and configured to be extended and retracted adjacent to the front end of the housing, wherein the slider and the blade guard are configured to move in tandem.
    Type: Application
    Filed: April 29, 2008
    Publication date: October 29, 2009
    Inventors: Yen-Chao Chung, Joe Garavaglia, Glen Kanemoto, Markus Gropl, Dave Puglisi, Mark Marinovich
  • Pocket Safety Cutter
    Publication number: 20080289190
    Abstract: Pocket safety cutter devices include ergonomic blade housing and handle portions adapted to be safely folded together into compact closed configurations.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Inventors: Dale E. Jennings, Glen Kanemoto, Yen-Chao Chung
  • Utility knife with a safety lock
    Patent number: 5987751
    Abstract: A utility knife is provided with a feature of easy replacement of the blade and a characteristic that the utility knife body halves are prevented from separating from each other. The utility knife has a safety lock which is able to enhance the assembly between the body halves, such that even when the release mechanism of the knife is accidentally operated or the knife accidentally falls to the ground, the knife body halves are still securely attached with each other.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: November 23, 1999
    Inventor: Yen-Chao Chung
  • Knife for woodworking
    Patent number: 5864952
    Abstract: A knife for woodworking, which is convenient for a user to dispose a blade thereinto, is disclosed. The knife includes a first casing and a second casing. The two casings are pivotedly joined at one end thereof . The first casing has an insert mounted therein. The insert defines a slot thereon. The second casing has a fitting member extending from an inner face thereof and through the slot of the insert. By urging the insert, the fitting member will be interlocked with the periphery of the slot so that the first casing is engaged with the second casing. By releasing the insert, the first casing and the second casing will open to facilitate a disposition of the blade, without separating the pivoted joint thereof.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: February 2, 1999
    Assignee: Lutz File & Tool Company
    Inventor: Yen-chao Chung
  • Hand held cutter
    Patent number: 5862596
    Abstract: A hand held cutter which is able to facilitate users to easily replace a blade received therein. The users will only need to push a pusher, then an upper cover and a lower cover of the hand held cutter are easily separated. The upper cover and a lower cover of the hand held cutter are assembled by pressing down a pressing knob, which initiates a secure attachment relationship between the upper cover and the lower cover.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: January 26, 1999
    Inventor: Yen-Chao Chung
  • Carpenter knife
    Patent number: D509419
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: September 13, 2005
    Inventor: Yen-Chao Chung