Patents by Inventor Osamu Yamanaka

Osamu Yamanaka 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: 6419306
    Abstract: An illuminating plate for a car has a light guide plate; a cover provided with at least one light transmitting window, and disposed on the light guide plate; and light reflecting layer formed on the rear surface of the light guide plate. The light reflecting layer is formed to cover an area where the light is projected onto the rear surface of the light guide plate through the corresponding light transmitting window, and the light reflecting layer being slightly larger than the area.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: July 16, 2002
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Yoshio Sano, Osamu Yamanaka, Yasumasa Tatewaki, Minoru Shibata, Katuhiro Katagiri, Kazumichi Shigeno, Hiroshi Suyama
  • Publication number: 20020085377
    Abstract: A passenger-cabin lighting device comprises as follows. A transparent member is made of synthetic resin not containing scattering material, and has a light emitting surface and a light reflecting surface. A semitransparent member is made of semitransparent synthetic resin containing the scattering material. The semitransparent member is bonded to an inside of the transparent member to constitute a 1 ight emitting body.
    Type: Application
    Filed: November 10, 1999
    Publication date: July 4, 2002
    Inventors: TAKAO MUKOGAWA, OSAMU YAMANAKA, TADANOBU IWASA, HIROSHI SUGIHARA
  • Patent number: 6402339
    Abstract: A passenger-cabin lighting device comprises as follows. A transparent member is made of synthetic resin not containing scattering material, and has a light emitting surface and a light reflecting surface. A semitransparent member is made of semitransparent synthetic resin containing the scattering material. The semitransparent member is bonded to an inside of the transparent member to constitute a light emitting body. A plurality of light emitting diodes are diposed on one end face of the light emitting body for projecting light into the transparent member and the semitransparent member. A control circuit controls flickering of the plurality of light emitting diodes. The thus constructed passenger-cabin lighting device may be used for lighting and illuminating the passenger cabin, and for highlighting the car itself.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: June 11, 2002
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Takao Mukogawa, Osamu Yamanaka, Tadanobu Iwasa, Hiroshi Sugihara
  • Patent number: 6402354
    Abstract: A direct lighting unit fits in opposition to an opening of a roof of a vehicle's cabin so as to illuminate a light directly the cabin. An indirect lighting unit is disposed around the outer circumference of the direct lighting unit. The indirect lighting unit contains a plurality of LEDs disposed at fixed intervals so as to emit light outward. The LEDs are controlled to indirectly illuminate the roof. When the direct lighting unit is mounted to the roof, a fixing piece supports a grooved edge portion of the indirect lighting unit so that the indirect lighting unit is immovably held between the fixing piece and the roof. Thus, the direct and indirect lighting units are simultaneously secured to the roof.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: June 11, 2002
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Yasumasa Tatewaki, Tadanobu Iwasa, Osamu Yamanaka, Hiroshi Sugihara, Akihiro Misawa, Tetsuo Tanabe, Takao Mukogawa
  • Publication number: 20020051356
    Abstract: A planar light emitting device has a planar light emitter. It has a layered structure composed of a transparent body and a semi-transparent body. The transparent body is made of a transparent synthetic resin containing no light scattering material. The semi-transparent body is made of a semi-transparent synthetic resin containing a light scattering material. The transparent body and the semi-transparent body are joined to form a diffusion layer therebetween. An LED array is disposed at one side of the planar light emitter. The diffusion layer has a sea-islands structure. An island resin has a dimension of 0.1 to 50 microns. The light entering the island resin attenuates therein without reflecting at once due to its complicated shape. Namely, the light entering the diffusion layer generates uniform brightness.
    Type: Application
    Filed: January 2, 2002
    Publication date: May 2, 2002
    Applicant: TOYODA GOSEI CO., LTD.
    Inventors: Toshinori Takahashi, Norihito Kino, Makoto Tamaki, Tadanobu Iwasa, Hiroshi Sugihara, Osamu Yamanaka
  • Publication number: 20020043012
    Abstract: An LED light source is received in a groove portion provided in a light guide plate. The groove portion is covered with a base member, and the circumferential edge of the base member is bonded to the light guide plate. Concave portions or convex portions having desired shapes are provided in a surface opposite to a light emission observable surface of the light guide plate so as to form character portions.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 18, 2002
    Inventors: Minoru Shibata, Osamu Yamanaka, Masanobu Muto
  • Publication number: 20010040393
    Abstract: An illuminating plate for a car has a light guide plate; a cover provided with at least one light transmitting window, and disposed on the light guide plate; and light reflecting layer formed on the rear surface of the light guide plate. The light reflecting layer is formed to cover an area where the light is projected onto the rear surface of the light guide plate through the corresponding light transmitting window, and the light reflecting layer being slightly larger than the area.
    Type: Application
    Filed: December 11, 2000
    Publication date: November 15, 2001
    Inventors: Yoshio Sano, Osamu Yamanaka, Yasumasa Tatewaki, Minoru Shibata, Katuhiro Katagiri, Kazumichi Shigeno, Hiroshi Suyama
  • Patent number: 6303027
    Abstract: A treated water quality control system (10) has a sewage inflow estimating unit (1) for estimating an inflow of sewage and a process data storage unit (3) for storing process data on a sewage treatment plant (50). An estimated sewage inflow estimated by the sewage inflow estimating unit (1) and process data read from the process data storage unit (3) are given to a manipulated variable calculating unit (20). The manipulated variable calculating unit (20) calculates values of manipulated variables to be used by a process controller (6) for controlling the sewage treatment plant (50). The values of the manipulated variables calculated by the manipulated variable calculating unit (20) and the process data read from the process data storage unit (3) are given to a process condition estimating arithmetic unit (21).
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: October 16, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akihiro Nagaiwa, Osamu Yamanaka, Masahiko Tsutsumi, Yasuhiko Nagamori, Yukio Hatsushika, Masajiro Nakada, Kazuhiro Horie, Masaki Kunimi, Tetsuya Shinohara, Hiroshi Yuuki
  • Patent number: 6072391
    Abstract: An information indicating device having an LED and a light transmitting structure is disposed within a line of sight of a vehicle operator so as to transmit light from the LED to the vehicle while the operator is driving the vehicle. A distance sensor measures a distance between a vehicle body and an object near it. An emission control circuit controls the LED based on an output of the distance sensor, thereby indicating predetermined information, such as a distance warning to the operator. An indicating portion is disposed on an end of a corner pole or a fender marker to receive light from the LED and transmit light to the vehicle operator without requiring the vehicle operator to substantially look away from the direction the vehicle is traveling or a mirror showing the driver the vehicle's traveling direction.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: June 6, 2000
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Akihiko Suzuki, Makoto Tamaki, Osamu Yamanaka, Tadanobu Iwasa, Hiroshi Ito
  • Patent number: 5949346
    Abstract: An LED display device has an indicator having a housing. The housing has at least one incident portion which receives light from at least one LED. The incident portion has a reflection surface at its inside surface. LEDs emit light from one side or one longitudinal end of the incident portion. A refraction plate may be provided to direct emission of the incident light for viewing by a user.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: September 7, 1999
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Akihiko Suzuki, Makoto Tamaki, Osamu Yamanaka, Tadanobu Iwasa, Hisao Yamaguchi, Kazuhiro Sakai, Takemasa Yasukawa, Akihiro Misawa, Hiroshi Sugihara
  • Patent number: 5919422
    Abstract: A photo-catalyzer for deodorizing, cleaning, sterilizing, and water purifying operations includes a substrate, a titanium dioxide film disposed on the substrate and functioning as a photo-catalyst, and a light-emitting diode disposed adjacent to the titanium dioxide film and producing ultraviolet light having a wavelength from 360 to 400 nm onto the titanium dioxide film. The photo-catalyzer can be used in places where there is no sunlight because it is optionally provided with a light-emitting diode. The light-emitting diode does not require a large installation space because it is an extremely small light-emitting device. Hence, the photo-catalyzer has a compact structure and can be used easily anywhere, including small places. The substrate can be fabricated into a variety of useful appliances to take advantage of the strong oxidizing properties of the photo-catalyzer.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: July 6, 1999
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Osamu Yamanaka, Tadanobu Iwasa, Makoto Tamaki, Kazuhiro Sakai, Hisao Yamaguchi
  • Patent number: 5815072
    Abstract: A vehicle display device such as a speed meter including indicators, many segments illuminated in two or more colors by plural LEDs and an indicator control circuit. The indicators dispose the segments so as to display a variable such as a car speed in a bar graph or in the form of a number. The indicator control circuit displays the variable by controlling the lighting of the LEDs and changes an emitted light color of indication based on a fixed color changing reference value in accordance with a value of the variable. The control circuit controls a duty ratio of a supply current or a current value in a predetermined set value range determined on the basis of the color changing reference value. Namely, brightness of the emitted light color before a color change is gradually decreased, while brightness of the emitted light color after the color change is gradually increased.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: September 29, 1998
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Osamu Yamanaka, Makoto Tamaki, Takemasa Yasukawa, Hiroshi Sugihara, Kazushi Noda, Yoshio Sano, Tetsuo Tanabe
  • Patent number: 5741058
    Abstract: An LED display device having an LED array for a meter on a printed circuit board. A diffusing radiation lens array is disposed facing the LED array. A cover lens is overlapped on the lens array. The cover lens transmits LED light which passed through the lens array. The cover lens has at least a scale mark, a character and a sign. A sheet is interposed between the lens array and the cover lens. The sheet limits radiation of predetermined diffused light from the lens array while partially transmitting the diffused light. The cover lens has a scale mark dent and a character dent formed on its rear interior surface, and displays the scale mark and character by means of an LED light from another LED array.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: April 21, 1998
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Akihiko Suzuki, Makoto Tamaki, Takemasa Yasukawa, Osamu Yamanaka, Tadanobu Iwasa
  • Patent number: 5633289
    Abstract: A process and a polyurethane material for molding a semi-rigid integral skin foam which comprising an integral skin having a low degree of foaming and a core having a high degree of foaming. The process includes evacuating a mold cavity to reduce the pressure thereof below atmospheric pressure; injecting into the evacuated mold cavity a polyurethane material; and foaming the material to fill the cavity. The polyurethane material contains a polyol component and an isocyanate component with, at most, 5 parts by weight of a solvent for 100 parts by weight of the polyol component, in the absence of freon.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: May 27, 1997
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Michihiko Nakamura, Masanao Ishikake, Yukio Kawakita, Akira Mabuchi, Osamu Yamanaka
  • Patent number: 5476619
    Abstract: A process for molding a semi-rigid integral skin foam which comprising an integral skin having a low degree of foaming and a core having a high degree of foaming. The process includes evacuating a mold cavity to a pressure of from above 50 to 700 Torr; injecting, into the evacuated mold cavity, a polyurethane material which contains a polyol component and an isocyanate component with air bubbles introduced therein by air loading, in the substantial absence of a foaming agent; and foaming the material to fill the cavity.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: December 19, 1995
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Michihiko Nakamura, Masanao Ishikake, Yukio Kawakita, Akira Mabuchi, Osamu Yamanaka
  • Patent number: 5449698
    Abstract: Disclosed herein is a process for producing an integral skin polyurethane foam which comprises expanding a reacting mixture containing substantially no blowing agent in an evacuated mold cavity. Disclosed also herein is an apparatus for producing said an integral skin polyurethane foam which comprises a mold having a cavity and a vent hole, a vacuum chamber communicating with the cavity through the vent hole, a vacuum pump to evacuate the cavity through the vacuum chamber, and a sight glass attached to the vacuum chamber so as to make the vicinity of the vent hole visible from the outside of the vacuum chamber.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: September 12, 1995
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Akira Mabuchi, Osamu Yamanaka, Naoyuki Kumagai, Satoru Ono, Motoshi Matsuura
  • Patent number: 4797637
    Abstract: A PLL frequency synthesizer comprises a voltage controlled oscillator which oscillates in response to a frequency signal corresponding to a control signal to be input and which outputs the frequency signal as an output of said PLL frequency synthesizer; a multiplier means for multiplying a reference frequency signal to be input; a mixer for mixing the frequency signal which is output from the voltage controlled oscillator and the multiplied reference frequency signal which is output from the multiplier, and for outputting a frequency signal representative of a difference therebetween; a variable frequency divider for dividing the difference frequency signal at a variable dividing ratio; a fixed frequency divider for dividing the reference frequency signal at a predetermined dividing ratio; a frequency phase comparator for detecting a phase difference between an output signal from the variable frequency divider and an output signal from the fixed frequency divider and for outputting a phase difference signal t
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: January 10, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koyo Kegasa, Takafumi Murai, Osamu Yamanaka, Takeshi Fujii
  • Patent number: 4658206
    Abstract: A fault detector is designed to detect abnormality of a transmission apparatus which transmits burst type signals such as a satellite communications equipment by wave-reforming the input and the output signal of the transmission apparatus, and executing an exclusive OR operation to both wave-reformed signals. An exclusive OR circuit which executes an exclusive OR operation by detecting whether either of the two wave-reformed signals exists at the rising or the falling of the other wave-reformed signal provides a highly precise result. An exclusive OR circuit which assures that the signal level is within a predetermined range at wave-reforming the output signal of the transmission apparatus enhances the preciseness to a greater extent in detection of abnormality.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: April 14, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Osamu Yamanaka