Patents by Inventor Akira Kikuchi

Akira Kikuchi 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: 6018046
    Abstract: The invention relates to novel pyridocarbazole derivatives having highly selective action in inhibiting cyclic GMP-phosphodiesterase (hereinafter abbreviated as cGMP-PDE), processes for producing such derivatives, agents containing at least one of such derivatives as an active ingredient for preventing and/or treating pulmonary hypertension, ischemic heart diseases or diseases against which the cGMP-PDE inhibitory action is effective, and intermediates useful for the production of pyridocarbazole derivatives.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: January 25, 2000
    Assignee: Mochida Pharmaceutical Co., Ltd.
    Inventors: Masayuki Ohashi, Toshiyuki Shudo, Kazumi Nishijima, Tatsuto Notso, Akira Kikuchi, Kazutoshi Yanagibashi, Hidemitsu Nishida
  • Patent number: 6002246
    Abstract: In a flyback transformer, an insulating cover is interposed between a main body casing and a focusing pack casing. A through-hole is formed through a ceramic resistor accommodated in the focusing pack casing. A fixing hole is formed through the insulating cover in a coaxial relationship with the through-hole. A slider is fixed on a rotatable knob for a variable resistor, which is supported on the focusing pack casing. One of two tongues of the slider is maintained in contact under pressure with a variable resistor of the ceramic resistor, and the other tongue is arranged coaxially with the fixing hole and is maintained in contact under pressure with a wire-shaped output terminal. The terminal is press-fitted in the fixing hole. Another flyback transformer is also disclosed, which comprises a cylindrical holder portion.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: December 14, 1999
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Kiyohiko Gohkon, Teruaki Sato, Mitsuhiro Kanno, Akira Kikuchi
  • Patent number: 5926603
    Abstract: An editing apparatus forms an output video signal by effecting an editing processing on a plurality of video signals effect on first and second input video signals. There are generated first and second video clips representing a starting position and an ending position set to the first input video signal, third and fourth video clips representing a starting position and an ending position set to a second input video signal, and fifth and sixth video clips representing a starting position and an ending position set to an output video signal. The first, second, third and fourth video clips are displayed on the basis of time information attached to each video clip so as to express a positional relationship of the first, second, third and fourth video clips on a time axis. Also, the fifth and sixth video clips are displayed.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: July 20, 1999
    Assignee: Sony Corporation
    Inventors: Toshiyuki Tanaka, Sojiro Kizu, Takashi Tabuchi, Akira Kikuchi, Yutaka Saito
  • Patent number: 5913255
    Abstract: A method of producing a radially anisotropic sintered R-Fe-B-based magnet wherein R is at least one rare earth element including Y, in which a green body stack comprising a plurality of compact bodies are formed in series by the same die. The density of the compact body is regulated to 3.1 g/cm.sup.3 or more, and increased at the final compacting step to a density at least 0.2 g/cm.sup.3 higher than that before the final compacting step. By so regulating the density of the green body, the cracking during the sintering process at the binding portion, an interface between the stacked compact bodies, can be minimized while retaining high magnetic properties of the resulting magnet.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: June 15, 1999
    Assignee: Hitachi Metals Ltd.
    Inventors: Akira Kikuchi, Shigeho Tanigawa
  • Patent number: 5805545
    Abstract: The invention is recorded information reproducing device suitable for use in a kara-oke device and the like which reproduces sound information recorded on an information recording medium such as a CD (Compact Disk), LVD (laser Video Disk) or the like according to the MIDI (Musical Instrument Digital Interface) standards, and which also allows repeated practice in synchronization with the progress of music in kara-oke and the like. The recorded information reproducing device which reproduces sound from an information recording medium M on which encoded musical information AI and control information CI are recorded according to the MIDI standards. The recorded information reproducing device 100 includes a musical information reproduction unit for decoding the musical information to output reproduced musical information S.sub.A ; a control information reproduction unit for decoding the control information to output a clock signal S.sub.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: September 8, 1998
    Assignee: Pioneer Electronic Corporation
    Inventors: Noboru Nakamaru, Shinji Suzuki, Toshiyuki Katsu, Akira Kikuchi, Tatsushi Iizuka, Masaharu Sakamoto
  • Patent number: 5792793
    Abstract: The present invention relates to a complex formed by the coordination between a thiol group-containing compound and a silver ion; an antibacterial, antifungal, and antiviral agent containing the same as the active agent; and an antibacterial, antifungal, and antiviral composition containing the above agent and a vehicle or a carrier.The agent has a wide antibacterial and antifungal spectrum and an antiviral activity, is well compatible with various vehicles and carriers, sustains its activity for long, and has reduced peroral toxicity, skin irritation and mucosa irritation.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: August 11, 1998
    Assignees: Meiji Milk Products Co., Ltd., Toyo Ink Mfg. Co., Ltd.
    Inventors: Munehiro Oda, Hiroyuki Itoh, Tetsushi Sudo, Sadatoshi Sakuma, Kenji Nomiya, Yasunori Suzuki, Yukiyoshi Jonoshita, Akira Kikuchi, Yoshiko Takabatake
  • Patent number: 5547457
    Abstract: An objective optical system for endoscopes comprising a plurality of lens components and an aperture stop, and configured so as to permit adjusting a distance to an object to be observed simply by exchanging a lens component disposed in the vicinity of the aperture stop with another lens component having a focal length different from that of the lens component disposed in the vicinity of the aperture stop. This objective optical system for endoscopes can have an optimum depth of field by changing a diameter of the aperture stop along with the exchange of the lens component disposed in the vicinity of the aperture stop.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 20, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hiroshi Tsuyuki, Akira Kikuchi
  • Patent number: 5489343
    Abstract: An R-Fe-B-based, sintered magnet, wherein R is one or more of rare earth elements including Y, is produced by the method including the steps of mixing fine R-Fe-B-based magnet powder with a mineral oil and/or a synthetic oil having a fractional distillation temperature range of 150.degree.-400.degree. C. and a kinetic viscosity of 10 cSt or less to prepare a mixture; charging the mixture under pressure into a die cavity equipped with a filter, to which an orientated magnetic field is applied, while removing a mineral oil and/or a synthetic oil from the mixture; compressing the mixture in the die cavity to carry out a wet molding while orientating the powder to prepare a green body; heating the green body to a temperature up to 500.degree. C. at a speed of 10.degree. C./min or less under pressure of 10.sup.-1 Torr or less for 30 minutes or more to remove a mineral oil and/or a synthetic oil from the green body; and then sintering the green body.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: February 6, 1996
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kimio Uchida, Masahiro Takahashi, Masamichi Ozaki, Akira Kikuchi
  • Patent number: 5424877
    Abstract: An observation optical system for endoscopes configured so as to allow observation of objects located in liquids, comprising an objective lens system and relay lenses for relaying an image formed by the objective lens system, and satisfies the following conditions (1) and (2):0.08.ltoreq.N.sub.w .multidot.f tan [sin.sup.-1 {(1/N.sub.w) sin .theta..sub.Al }]/I.sub.1 .ltoreq.1.18 (1)0.9.ltoreq.N.sub.w .multidot.f.multidot.tan[sin.sup.-1 {(1/N.sub.w) sin .theta..sub.A0.5 }]/I.sub.0.5 .ltoreq.1.1 (2)wherein the reference symbol f represents a focal length of the objective lens system, the reference symbol N.sub.w designates a refractive index of a liquid, the reference symbols .theta..sub.Al and .theta..sub.A0.5 denote field angles at the maximum image height and a half of the maximum image height in water respectively, and the reference symbols I.sub.1 and I.sub.0.5 represent a maximum image height and a half of the maximum image height.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: June 13, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hiroshi Tsuyuki, Akira Kikuchi
  • Patent number: 5359456
    Abstract: An objective lens system for endoscopes comprising, in order from the object side, a front lens unit having a negative refractive power, an aperture stop and a rear lens unit having a positive refractive power. This objective lens system is compact, comprises a small number of lens elements and favorably corrected aberrations, especially chromatic aberration, owing to a fact that at least one graded refractive index lens component is used in the front lens unit or the rear lens unit.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: October 25, 1994
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Akira Kikuchi
  • Patent number: 5337497
    Abstract: In order to provide a vacuum degreasing-drying method by which extremely small, precision metal products can be degreased and dried quickly and completely without using organic solvents, according to the present invention, an object 112 to be rinsed is put in a vacuum drier 110 after being rinsed with a hydrocarbon cleaning agent and then the air in the vacuum drier 110 is evacuated so as to degrease and dry the object thus rinsed.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 16, 1994
    Assignee: NSK Ltd.
    Inventors: Chuichi Sato, Akira Kikuchi, Hiroshi Saito, Shinichi Takaira
  • Patent number: 5329444
    Abstract: A work management system has input means having a function of inputting coordinate information from the surface of a panel, output means having a function of projecting electronic information onto the panel, and data processing means for executing a predetermined processing, e.g., preparation and input processing of a form, a chart or a drawing, retrieval, editing, totalization, etc., by establishing a correspondence between the information projected on the panel by using the output means and the coordinate information input from the input means. The data processing means displays a list of registered items to be designated in a window for selection of one of the items, whereas, when coordinate information is input from two points for an entry column for time setting, the data processing means draws a bar between the two points. Control information which is conformable to working hours of equipment at a work site, e.g.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: July 12, 1994
    Assignee: Shimizu Construction Co., Ltd.
    Inventors: Hideki Takahashi, Teruo Fukunaga, Tomonori Inokoshi, Masataka Abe, Yuji Saito, Masaru Sukagawa, Mitsuaki Watanabe, Tateo Yokozawa, Akira Kikuchi, Hiromi Kato, Takashi Kunugi, Manabu Akimoto, Yusuke Yamazaki
  • Patent number: 5267092
    Abstract: An editing apparatus has a storage unit in which a plurality of recorded media, such as, tape cassettes, are stored at respective storage positions, a first memory for storing data identifying the recorded media in the storage unit and data representing the respective storage positions thereof, a playback device for reproducing information signals from recorded media at a loaded position therein, a recording device for recording on a recording medium, such as, another tape cassette, the information signals reproduced by the playback device, a second memory for storing the data identifying the recorded media loaded in the playback device, a transport device for carrying the recorded media between the respective storage positions in the storage unit and the loaded position in the playback device with the data stored in the first and second memories being updated in response to operations of the transport device, and a control system by which operations of the transport device are controlled in accordance with i
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: November 30, 1993
    Assignee: Sony Corporation
    Inventors: Sojiro Kizu, Yutaka Saito, Akira Kikuchi, Ichiro Ninomiya
  • Patent number: 5227987
    Abstract: A multichannel digital signal processor includes a plurality of sets of analog-to-digital (A/D) and digital-to-analog (D/A) conversion portions. Predetermined ones of the plurality of A/D and D/A conversion portions are selected in accordance with processing steps or with the required precision of the digital signal processing.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: July 13, 1993
    Assignees: Hitachi, Ltd., Hitachi VLSI Engineering Corp.
    Inventors: Koji Imazawa, Akira Kikuchi, Mitsumasa Satoo
  • Patent number: 5206759
    Abstract: An image transmission optical system wherein a lens unit serving for relaying an image for a unit relaying distance consists of two bar shaped cemented lens components, and each of said lens components consists of a bar-shaped lens element and two lens elements which are cemented to both the end surfaces of the bar-shaped lens element respectively of said bar-shaped lens element and have a refractive index higher than that of the bar-shaped lens element. This image transmission optical system comprises a small number of air-contact surfaces and has favorably corrected aberrations.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: April 27, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Katsuya Ono, Akira Kikuchi
  • Patent number: 5143435
    Abstract: An optical system for endoscopes comprising a light source and a condenser optical system for focusing the light emitted from said light source, and adapted so as to lead the light emitted from said light source to be incident through said condenser optical system onto light guides having different NA's, said condenser optical system being equipped with a means capable of varying or adjusting NA of the light emerging from said condenser optical system in conjunction with NA of a light guide selected for use. This optical system for endoscopes permits matching NA of the emerging light bundle with the NA of the selected light guide by using the adjusting means, thereby improving light distribution characteristic and transmission efficiency.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: September 1, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Akira Kikuchi
  • Patent number: 5142410
    Abstract: An image transmission optical system wherein a lens unit serving for relaying an image for a unit relaying distance consists of two bar-shaped cemented lens components, and each of said lens components consists of a bar-shaped lens element and two lens elements which are cemented to both the end surfaces of said bar-shaped lens element respectively of said bar-shaped lens element and have a refractive index higher than that of said bar-shaped lens element. This image transmission optical system comprises a small number of air-contact surfaces and has favorably corrected aberrations.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: August 25, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Katsuya Ono, Akira Kikuchi
  • Patent number: 5097204
    Abstract: A method and apparatus for testing an integrated electronic device wherein the integrated electronic device to be tested is placed on a sample table. A predetermined position of the integrated electronic device is irradiated with the primary charged beam. A substrate current flowing through a substrate of the integrated electronic device is measured upon radiation of the primary charged beam, and then a potential of the predetermined position irradiated with the primary charged beam is nondestructively measured in accordance with secondary electrons emitted from the predetermined position. A function of the integrated electronic device is evaluated in accordance with the substrate current and the predetermined position potential. The function to be evaluated includes leakage characteristics and a capacitance.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: March 17, 1992
    Assignee: Nippon Telegraph and Telephone Public Corporation
    Inventors: Masahiro Yoshizawa, Akira Kikuchi, Kou Wada, Minpei Fujinami, Nobuo Shimazu
  • Patent number: 5086896
    Abstract: A jaw clutch coupling mechanism in which spline grooves serving as ball drop-in portions of the clutch are provided with a semi-spherical ball support recess to be engaged with a steel ball by way of linear or surface contact for enhancing the strength of the jaw clutch. A stopper is provided in the shift lever link mechanism to hold the shift lever securely in the forward, neutral or reverse position, and a shock absorber is provided in association with the shifter arm of the jaw clutch to dampen the shocks of engagement of the clutch, ensuring a better feeling in shift lever operations.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: February 11, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshiaki Murakami, Takahisa Murakami, Akira Kikuchi
  • Patent number: D332782
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: January 26, 1993
    Assignee: NEC Corporation
    Inventors: Akira Kikuchi, Masahiro Suzuki, Toru Ichihashi