Patents by Inventor Takehiro Kaneko

Takehiro Kaneko 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).

  • Process of producing key units wherein marking on their tops made of light-transmitting material can be completed later on
    Patent number: 7616224
    Abstract: A method is provided for marking a key top made of a translucent material with a character, a symbol, or the like, and a process is provided for quickly producing an illumination key unit. The inside of a transparent plastic key top is irradiated intermittently with focused laser light having a wavelength belonging to near infrared region of 1064 nm or less, visible region or near ultraviolet region to form an aggregation of multiple fine carbonization black points and an aggregation of points whitened by fine cracks or bubbling representing a character, a symbol, or the like. After a process capable of being carried out without determining a destination has ended, production is interrupted temporarily or ended and marking is performed by irradiating the top surface of the key top with laser light upon determination of a character, a symbol, or the like, related with the destination.
    Type: Grant
    Filed: December 25, 2003
    Date of Patent: November 10, 2009
    Assignee: Sunarrow Limited
    Inventor: Takehiro Kaneko
  • Key unit, method for marking key top, and method for manufacturing key unit using the same
    Patent number: 7512229
    Abstract: As a marking laser beam, a laser beam of wavelength 532 nm obtained by extracting by extracting second higher harmonic of the Nd:YAG laser or a laser beam of wavelength 355 nm obtained by extracting third higher harmonic of the Nd:YAG laser is used on a metal film formed on a plastic key top of a mobile telephone or the like, so that the metal film portion subjected to the beam is completely removed or only the surface portion of the metal film subjected to the beam is removed, thereby forming a planar set of very small concave points. Thus, it is possible to obtain a key unit having a metal film on which a character or symbol is directly marked.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: March 31, 2009
    Assignee: Sunarrow Ltd
    Inventor: Takehiro Kaneko
  • Key unit, method for making key top, and method for manufacturing key unit using the same
    Publication number: 20080013713
    Abstract: As a marking laser beam, a laser beam of wavelength 532 nm obtained by extracting by extracting second higher harmonic of the Nd:YAG laser or a laser beam of wavelength 355 nm obtained by extracting third higher harmonic of the Nd:YAG laser is used on a metal film formed on a plastic key top of a mobile telephone or the like, so that the metal film portion subjected to the beam is completely removed or only the surface portion of the metal film subjected to the beam is removed, thereby forming a planar set of very small concave points. Thus, it is possible to obtain a key unit having a metal film on which a character or symbol is directly marked.
    Type: Application
    Filed: October 21, 2003
    Publication date: January 17, 2008
    Inventor: Takehiro Kaneko
  • Method for making key top made of translucent material., key top marked by that method, key unit, and process for producing key unit
    Publication number: 20060042071
    Abstract: A method is provided for marking a key top made of a translucent material with a character, a symbol, or the like, and a process is provided for quickly producing an illumination key unit. The inside of a transparent plastic key top is irradiated intermittently with focused laser light having a wavelength belonging to near infrared region of 1064 nm or less, visible region or near ultraviolet region to form an aggregation of multiple fine carbonization black points and an aggregation of points whitened by fine cracks or bubbling representing a character, a symbol, or the like. After a process capable of being carried out without determining a destination has ended, production is interrupted temporarily or ended and marking is performed by irradiating the top surface of the key top with laser light upon determination of a character, a symbol, or the like, related with the destination.
    Type: Application
    Filed: December 25, 2003
    Publication date: March 2, 2006
    Applicant: SUNARROW LIMITED
    Inventor: Takehiro Kaneko
  • Multi stage and multi direction key and multi stage and multi direction key switch using the same
    Patent number: 6670562
    Abstract: An end of the present invention is to make it possible to input multi-valued signals by a manipulation to incline a key in a multi-direction-operative key switch, and disclosed is a structure of a multi-direction-operative key fitting to the end of the present invention.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: December 30, 2003
    Assignee: Sunarrow Ltd.
    Inventor: Takehiro Kaneko
  • Multi stage and multi direction key and multi stage and multi direction key switch using the same
    Publication number: 20030010609
    Abstract: An end of the present invention is to make it possible to input multi-valued signals by a manipulation to incline a key in a multi-direction-operative key switch, and disclosed is a structure of a multi-direction-operative key fitting to the end of the present invention.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 16, 2003
    Inventor: Takehiro Kaneko