Patents by Inventor Cheng-Jih Li

Cheng-Jih Li 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).

  • Manufacturing razor blades
    Patent number: 8607667
    Abstract: A method of manufacturing razor blades from a strip material including reducing the thickness of the strip material by at least 10% and converting the strip material into razor blades.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: December 17, 2013
    Assignee: The Gillette Company
    Inventors: Cheng-Jih Li, Stephen F. Hobbs, Nicolae Neamtu
  • Manufacturing razor blades
    Patent number: 8061237
    Abstract: A method of manufacturing razor blades from a strip material includes reducing the thickness of a lengthwise-extending blade edge region of the strip material.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: November 22, 2011
    Assignee: The Gillette Company
    Inventors: Stephen F. Hobbs, Cheng-Jih Li, Nicolae Neamtu
  • Manufacturing razor blades
    Patent number: 7578217
    Abstract: A method of making razor blades from a strip material includes offsetting and flattening steps.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: August 25, 2009
    Assignee: The Gillette Company
    Inventors: Stephen F. Hobbs, Cheng-Jih Li
  • Manufacturing razor blades
    Publication number: 20070163390
    Abstract: A method of manufacturing razor blades from a strip material includes reducing the thickness of a lengthwise-extending blade edge region of the strip material.
    Type: Application
    Filed: October 26, 2005
    Publication date: July 19, 2007
    Inventors: Stephen Hobbs, Cheng-Jih Li, Nicolae Neamtu
  • Manufacturing razor blades
    Publication number: 20070089568
    Abstract: A method of making razor blades from a strip material includes offsetting and flattening steps.
    Type: Application
    Filed: October 26, 2005
    Publication date: April 26, 2007
    Inventors: Stephen Hobbs, Cheng-Jih Li
  • Manufacturing razor blades
    Publication number: 20070089567
    Abstract: A method of manufacturing razor blades from a strip material including reducing the thickness of the strip material by at least 10% and converting the strip material into razor blades.
    Type: Application
    Filed: October 26, 2005
    Publication date: April 26, 2007
    Inventors: Cheng-Jih Li, Stephen Hobbs, Nicolae Neamtu
  • Shaving razors
    Publication number: 20060272460
    Abstract: Razor blades and razors are provided. The razor blades include apertures, the perimeter of each aperture forming a cutting edge. The razor blades and razors are constructed so as to minimize gaps between the effective shaving zones of the apertures.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 7, 2006
    Inventors: Cheng-Jih Li, Alfred Porcaro, Robert Trotta
  • Circular saw testing technique
    Patent number: 5163334
    Abstract: A method for testing circular saws in which a saw to be tested is mounted for rotation at a controllable speed, a sensor being mounted opposite a surface thereof for determining the distance from the sensor to the surface. The sensor is appropriately calibrated and, when the saw is rotated at selected speeds, the output signal from the sensor is processed so as to provide a time domain response waveform and a frequency domain response waveform therefrom at the selected speeds of rotation. Certain characteristics of the saw's operation, such as the presence of low frequency "wobble" components, the width of the cutting operation, the perpendicularity of the cutting plane of the saw relative to the axis of rotation, and the development, or flatness, of the saw, are determined from the time domain and frequency domain responses.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: November 17, 1992
    Assignee: Simonds Industries Inc.
    Inventors: Cheng-Jih Li, Louis Alberghini