Patents by Inventor Koji Ikawa

Koji Ikawa 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: 5905468
    Abstract: A glass antenna device for a vehicle includes a glass sheet to be fitted to a window opening of a vehicle, which has a first antenna conductor for a low receiving frequency band and a second antenna conductor for a high receiving frequency band arranged thereon; a first coil connected between the first antenna conductor and the second antenna conductor, the first coil having an inductance value which exhibits low impedance in at least the low receiving frequency band; wherein the first coil cooperates with a first other element to generate first resonance so that the first resonance has a resonant frequency existing in a lower frequency band region than the high receiving frequency band.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: May 18, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Koji Ikawa, Fuminori Watanabe
  • Patent number: 5872901
    Abstract: In a manifold apparatus having a plurality of functions including a printer function, facsimile function and copier function, facsimile data from a host computer are transferred to a system controller via a printer controller. Information on the destinations for facsimile communication are registered at an image memory. The system controller searches the image memory on the basis of destination data contained in the facsimile data, thereby determining whether the destination has a G3 function or a G4 function. If the destination has a G3 function, the system controller transforms the facsimile data to image data and transmits the image data via a facsimile controller. If a G4 function is available at the destination, the system controller transmits the facsimile data, or code data, without transforming them.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: February 16, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Konno, Koji Ikawa, Toshiya Masuda, Yukinori Okazaki, Masaaki Nagano, Tetsuya Asakura
  • Patent number: 5102232
    Abstract: A temperature-measuring method comprises inputing laser pulses into an optical fiber to be measured and measuring temperature distribution in the fiber from the ratio of the amplitudes and the delay time of Stokes light and anti-Stokes light contained in the return beam from the optical fiber, wherein the temperature distribution is measured by using equations: ##EQU1## where T(x) is temperature to be measured, .THETA. is the reference temperature, R' (T) is the relative ratio of amplitude at the measuring point, R' (.THETA.) is the relative ratio of amplitude at the reference temperature point, k is Boltzmann's constant, h is Planck's constant, c is velocity of light, .nu. is Raman shift, .alpha. is distance, wherein the attenuation difference .alpha. is represented by a function .alpha.{T(.tau.)} dependent on temperature T(.tau.) at the measuring point .tau., and the exponential function in which the exponential part is represented by a value obtained by integrating the function .alpha.{T(.tau.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: April 7, 1992
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yuzuru Tanabe, Koji Ikawa
  • Patent number: 5054935
    Abstract: A temperature-measuring method which comprises inputting laser pulses into an optical fiber to be measured and measuring the temperature distribution in the fiber from the ratio of the amplitudes and the delay time of the Stokes light and the anti-Stokes light contained in the return beam from the optical fiber, wherein the temperature distribution is measured by using an equation: ##EQU1## where T(x) is the temperature to be measured, .THETA. is the reference temperature, R'(T) is the relative ratio of amplitude to the measuring point, R'(.THETA.) is the relative ratio of amplitude at the reference temperature point, k is the Boltzmann's constant, h is the Planck's constant, c is the velocity of light, .nu. is the Raman shift, .alpha. is the attenuation difference in the optical fiber between the Stokes light and the anti-Stokes light, and x is the distance, wherein the attenuation differenct .alpha. is represented by a function .alpha.{T(.tau.)} which is dependent on the temperature T(.tau.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: October 8, 1991
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yuzuru Tanabe, Koji Ikawa
  • Patent number: 4829474
    Abstract: Method and apparatus for automatically recognizing tab position requires no manual setting of the tab position. One or a plurality of tab positions are automatically recognized based on a tab information of an immediately preceding line, a tab information of a nearest preceding line which has the tab information, or tab information of all preceding lines which have the tab information. A cursor is moved to a tab position which is in alignment with a tab position of the immediately preceding line, the nearest preceding line, or one of the preceding lines by simply manipulating a tab key.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: May 9, 1989
    Assignee: Ricoh Company, Limited
    Inventor: Koji Ikawa