Patents by Inventor Atsushi Ichikawa
Atsushi Ichikawa 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).
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Patent number: 6432963Abstract: Pyrimidine-5-carboxamide derivatives represented by a general formula (I) or salts thereof [wherein each symbol has the following meaning; X: O, S, NR1, CO, NR1CO, CONR1, C═N—OR1 or a bond, Y: a lower alkylene group which may be substituted by OR1 or —NHR1, or a bond, Z: O, NR2 or a bond, A: H, or a lower alkyl which may have a substituent, a —CO-lower alkyl which may have a substituent, an aryl which may have a substituent, a heteroaryl which may have a substituent, a cycloalkyl which may have a substituent or a nitrogen-containing saturated heterocyclic group which may have a substituent, B: an aryl which may have a substituent or a heteroaryl group which may have a substituent, R1, R2: H, a lower alkyl or a —CO-lower alkyl group].Type: GrantFiled: June 15, 2000Date of Patent: August 13, 2002Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Hiroyuki Hisamichi, Ryo Naito, Souichirou Kawazoe, Akira Toyoshima, Kazuhito Tanabe, Eiichi Nakai, Atsushi Ichikawa, Akiko Orita, Makoto Takeuchi
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Publication number: 20020069231Abstract: A portable mobile unit, comprising: an input portion for inputting a letter or a numeral therethrough, wherein the input portion has at least fourteen (14) pieces of input keys; five (5) alphabetic letters of indicative vowels of Japanese language are assigned to five (5) input keys of said fourteen (14) pieces of input keys; and nine (9) alphabetic letters indicative of un-voiced consonants in consonants of Japanese language are assigned to nine (9) input keys, whereby an input of a voiced consonant or a half-voiced consonant is conducted by using an input key for use in inputting other consonant. With this, there is provided the portable mobile unit, which enables the input of Japanese language is possible even with a small number of key operations, in the manner similar to that of the Roman letter input method of Japanese language, with ease.Type: ApplicationFiled: February 27, 2001Publication date: June 6, 2002Inventor: Atsushi Ichikawa
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Patent number: 6333075Abstract: A simple and inexpensive method of forming a film on a wire or strip material by immersing it in a solution bath containing a film-treating component, and then draining liquid off, and an apparatus thereof are disclosed. The time from taking out the material from the solution bath to completing liquid draining is not less than 4 times the immersion time in the solution bath to thereby improve drawability.Type: GrantFiled: April 27, 1999Date of Patent: December 25, 2001Assignee: Bridgestone CorporationInventor: Atsushi Ichikawa
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Patent number: 5804415Abstract: Disclosed are (1) a protein capable of receiving PGE, (2) a recombinant DNA coding for said protein, (3) a vector having said DNA, (4) a transformant carrying said vector, and (5) a method for producing said protein wherein said transformant is cultured in a culture medium, the protein being useful not only in cloning other PGE receptor genes, clarifying the structure of PGE receptors and elucidating the function of PGE, but also in searching for PGE antagonists and agonists and so on.Type: GrantFiled: July 22, 1996Date of Patent: September 8, 1998Assignee: Takeda Chemical Industries, Ltd.Inventors: Atsushi Ichikawa, Shuh Narumiya
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Patent number: 5777952Abstract: A bias magnet unit has a permanent magnet that applies a bias magnetic field to an optical spot on a magneto-optical disk. A driving coil rotates the magnet in order to change a polarity of the bias magnetic field. A sensor detects the intensity and polarity of the bias magnetic field to confirm the rotational position of the magnet after it has been rotated. A linkage structure that is connected between a magnet holder of the magnet unit and the housing has arms that drive the magnet unit between two positions, one in which the magneto-optical disk cartridge can be inserted into the device and another in which the disk is loaded onto the spindle motor for recording/playback. Overall, the components of the device cooperate structurally to provide a relatively thin device structure having low power consumption.Type: GrantFiled: July 11, 1996Date of Patent: July 7, 1998Assignees: Hitahi, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Hajime Nishimura, Atsushi Ichikawa, Akio Yabe, Yuji Yokoyama
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Patent number: 5668787Abstract: An optical disk recording, and reproducing apparatus for recording and reproducing information and which is capable of storing a large amount of information, transferring data at a high speed, and supporting SCSI-1 and SCSI-2. The magnetooptical-disk recording and reproducing apparatus is of the same size as that of the 5.25-inch magnetic disk recording and reproducing apparatus. The front panel 1 has the cartridge slot 2 and cartridge ejection button 3 provided thereon so that a cartridge including a disk for recording and reproducing information is inserted in or ejected from the apparatus. The cartridge insertion slot 2 has a double flap provided so that at least one part of the double flap closes the slot, preventing dust from entering through the cartridge slot 2 except when the cartridge is inserted in or ejected from the apparatus. The magnetooptical-disk recording and reproducing apparatus can record information of 1 GB/side or above on the disk.Type: GrantFiled: May 9, 1996Date of Patent: September 16, 1997Assignee: Hitachi, Ltd.Inventors: Kazuo Shigematsu, Yoji Tomono, Atsushi Ichikawa, Toshiyasu Hattori
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Patent number: 5621576Abstract: An optical head for a recording device in which data are recorded on a recording surface of an optical memory disk, comprises, a head body which is substantially prevented from moving perpendicularly to the recording surface and is movable to be positioned roughly along the recording surface, an object lens for focussing a light beam on the recording surface, a carriage on which the object lens is mounted and which is movable to be positioned precisely along the recording surface, a drive base member for generating a force substantially parallel to the recording surface between the drive base member and the carriage to position precisely the carriage along the recording surface, and an elastic member for connecting the drive base member to the head body to support the drive base member relative to the head body elastically in a direction substantially parallel to the recording surface, joining areas between the elastic member and the drive base member and between the elastic member and the head body are alignType: GrantFiled: May 25, 1994Date of Patent: April 15, 1997Assignees: Hitachi, Ltd., Hitachi Video & Information Systems, Inc.Inventors: Yoshiaki Yamauchi, Shozo Saegusa, Atsushi Ichikawa, Akio Yabe, Akira Saito, Hiromitu Mori
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Patent number: 5576192Abstract: Disclosed are (1) a protein capable of receiving PGE, (2) a recombinant DNA coding for said protein, (3) a vector having said DNA, (4) a transformant carrying said vector, and (5) a method for producing said protein wherein said transformant is cultured in a culture medium, the protein being useful not only in cloning other PGE receptor genes, clarifying the structure of PGE receptors and elucidating the function of PGE, but also in searching for PGE antagonists and agonists and so on.Type: GrantFiled: February 17, 1995Date of Patent: November 19, 1996Assignee: Takeda Chemical Industries, Ltd.Inventors: Atsushi Ichikawa, Shuh Narumiya
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Patent number: 5537370Abstract: An optical disk recording and reproducing apparatus for recording and reproducing information and which is capable of storing a large amount of information, transferring data at a high speed and supporting SCSI-1 and SCSI-2. The magnetooptical-disk recording and reproducing apparatus is of the same size as that of the 5.25-inch magnetic disk recording and reproducing apparatus. The front panel 1 has the cartridge slot 2 and cartridge ejection button 3 provided thereon so that a cartridge including a disk for recording and reproducing information is inserted in or ejected from the apparatus. The cartridge insertion slot 2 has a double flap provided so that at least one part of the double flap closes the slot, preventing dust from entering through the cartridge slot 2 except when the cartridge is inserted in or ejected from the apparatus. The magnetooptical-disk recording and reproducing apparatus can record information of 1 GB/side or above on the disk.Type: GrantFiled: March 15, 1995Date of Patent: July 16, 1996Assignee: Hitachi, Ltd.Inventors: Kazuo Shigematsu, Yoji Tomono, Atsushi Ichikawa, Toshiyasu Hattori
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Patent number: 5420832Abstract: An optical disk recording and/or reproducing apparatus is provided which is capable of storing a large amount of information, transferring data at a high speed, supporting SCSI-1 and SCSI-2, and the reducing the size of the apparatus, particularly the height (to the so-called half height), The magnetooptical-disk recording and/or reproducing apparatus of the invention is of the same size as that of the 5.25-inch magnetic disk recording and/or reproducing apparatus of half height, or it is 146 mm wide, 203 mm deep, and 41.3 mm high. The front panel 1 has the cartridge slot 2 and cartridge ejection button 3 provided thereon so that a cartridge including a disk for recording and reproducing information is inserted in or ejected from the apparatus.Type: GrantFiled: November 8, 1993Date of Patent: May 30, 1995Assignee: Hitachi, Ltd.Inventors: Kazuo Shigematsu, Yoji Tomono, Atsushi Ichikawa, Toshiyasu Hattori
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Patent number: 5418763Abstract: A sealed library type optical disc unit is combined with an exchangeable cartridge type disc unit in a data storage and retrieval system. The optical discs within the sealed unit are exposed, as opposed to being encased in cartridges. A data access unit can quickly and efficiently access the exposed optical discs for loading them on an optical disc recording/reproducing unit. A control unit manages the transfer of data from a host computer to the storage and retrieval system. If a data write request exceeds the storage capacity of the optical disc within the sealed space, the excess data is written to the cartridge type disc unit without intervention by an operator and without interruption of the post processor. During a read operation, if data is requested that has been previously recorded on a cartridge type disc, the disc ID is displayed so that an operator can insert the disc into the cartridge type disc unit for the read operation.Type: GrantFiled: July 16, 1993Date of Patent: May 23, 1995Assignee: Hitachi, Ltd.Inventors: Atsushi Ichikawa, Masateru Watanabe, Tokuya Kaneda, Toshihiko Ishizaka, Shigeru Nakamura
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Patent number: 5412633Abstract: An optical disk unit has an optical system which is separated into a movable head assembly and a fixed optical system so that the movable head is made light weight. The movable head has an objective lens, an objective lens driving unit for focusing the objective lens, and a head moving unit for moving the whole movable head in the radial direction of an optical disk. The fixed optical system has a galvanomirror for deflecting the light emitted from a laser beam source and causing it to fall on the objective lens of the movable head, and detectors for receiving the light of the optical spot formed by the objective lens which is reflected from the optical disk. The galvanomirror is provided with a first mirror for reflecting the light emitted from the beam source to a plane intersecting the rotational shaft at right angles and directing the light to a fixed mirror, and a second mirror for deflecting the light reflected from the fixed mirror and directing the light to the objective lens.Type: GrantFiled: December 10, 1993Date of Patent: May 2, 1995Assignee: Hitachi, Ltd.Inventors: Atsushi Ichikawa, Yoshiaki Yamauchi, Akira Saito
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Patent number: 5287811Abstract: A flexible branching apparatus in a superconducting magnetically levitated railway having a U-shaped guideway includes a flexible main beam, which is integrally disposed along the guideway at the center thereof and has cross-sectional rigidity that gradually decreases from a fixed end to a distal end thereof, the main beam consisting of paramagnetic steel; cross beams integrated with the main beam and consisting of paramagnetic steel; runway concrete panels laid between the cross beams and supported so as not to possess transverse rigidity; short-span concrete panels connected to vertical portions of the cross beams by hinge support means, the short-span concrete panels having ground coils mounted thereon and constructing side walls for guidance; a driving device for driving the distal end of the main beam so as to be capable of forming the main beam into an alignment that does not fall below a minimum radius of curvature decided from an acceleration level for riding comfort; and a stopping device and lockingType: GrantFiled: March 10, 1993Date of Patent: February 22, 1994Assignee: Railway Technical Research InstituteInventors: Akio Matsuura, Atsushi Ichikawa, Genpachi Anami, Ichirou Sugimoto
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Patent number: 5220459Abstract: An optical disc driving device for use in an optical disc apparatus is equipped with an objective lens, a lens holder for holding this lens, and upper and lower support springs for supporting the lens holder. Each support spring consists of a pair of conductive springs which are electrically separated from each other in a plane. Each pair of conductive springs includes straight spring sections extending straight to pass a central axis which is parallel to the optical axis of the lens holder and which passes the center of gravity of the same. End portions of these conductive springs are joined to the lens holder by means of rubber members.Type: GrantFiled: July 29, 1991Date of Patent: June 15, 1993Assignee: Hitachi, Ltd.Inventors: Atsushi Ichikawa, Akira Saito, Yukio Sumiya
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Patent number: 4838649Abstract: A slide shaft is provided upright on a support portion, and a lens support is provided on the slide shaft in such a manner that it can rotate around the slide shaft and slide in the axial direction of the slide shaft. Therefore, a hole having a larger diameter than that of the slide shaft is formed at the center of the lens support. An objective lens is provided at one end of the lens support. A drive portion comprises permanent magnets provided on the support portion and coils for rotation and sliding which are provided on the lens support, and the rotation and movement in the sliding direction are performed by passing currents through the coils. The lens support is supported by a support spring which has high rigidity to the translation in the tracking direction and low rigidity to the rotation in a plane intersecting the slide shaft at right angles.Type: GrantFiled: December 4, 1987Date of Patent: June 13, 1989Assignee: Hitachi, Ltd.Inventors: Atsushi Ichikawa, Masamichi Ito, Akira Saito
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Patent number: 4786992Abstract: The invention relates to a tape transport mechanism in which two reels are respectively driven by different motors, thereby transporting a magnetic tape from one reel to another reel by passing through the portion of a read/write head without any variation in tension. At the initial stage to transport the magnetic tape, an acceleration time from a stop state of the tape until a tape speed reaches a reference speed and an average tension deviation to be applied to the magnetic tape during this time are obtained. Correction values to correct variations in run characteristics of two reel drive systems are calculated by use of the acceleration time and the average tension deviation. Upon next and the subsequent magnetic tape transport, currents to be supplied to the motors to drive two reels are controlled by use of the drive current command values corrected by those correction values.Type: GrantFiled: October 14, 1986Date of Patent: November 22, 1988Assignee: Hitachi, Ltd.Inventors: Fujio Tajima, Atsushi Ichikawa, Hiroshi Maejima, Munetake Kanna
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Patent number: 4752117Abstract: Disclosed is a device for driving an objective lens of an optical disk apparatus in both the tracking direction and the focusing direction. The device comprises a rocker arm supported rotatably and axially slidably by a supporting shaft and carrying the objective lens on its front end, a pair of first coils disposed on both sides respectively of an end on rear end of the rocker arm remote from the front end carrying the objective lens for driving the objective lens in the tracking direction, and a second coil mounted to the lower surface of the rocker arm for driving the objective lens in the focusing direction. A pair of magnets for producing a magnetic field for driving the objective lens in the focusing direction and a magnetic field for driving the objective lens in the tracking direction are mounted to a pair of yokes erected on both sides of the supporting shaft respectively.Type: GrantFiled: October 23, 1986Date of Patent: June 21, 1988Assignee: Hitachi, Ltd.Inventors: Atsushi Ichikawa, Masayuki Abe, Akio Yabe, Hideo Onuki, Shigefumi Hida
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Patent number: 4407462Abstract: In a web drive apparatus in which information is written into or read out of a web intermittently movable between a web supply reel and a web take-up reel by means of an information exchange station, a web tension control signal to be applied to a motor for the web take-up reel is compensated so as to suppress vibrations of the web which may be caused during the intermittent movement of the web.Type: GrantFiled: August 5, 1981Date of Patent: October 4, 1983Assignee: Hitachi, Ltd.Inventors: Fujio Tajima, Atsushi Ichikawa, Isao Shimizu
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Patent number: 4229471Abstract: Novel compounds having the general formula: ##STR1## wherein R is selected from hydrogen and methyl, effectively inhibit the growth of cancerous cells. These compounds are useful as carcinostatic agents.Type: GrantFiled: July 25, 1979Date of Patent: October 21, 1980Assignee: The Lion Dentifrice Co., Ltd.Inventors: Atsushi Ichikawa, Kenkichi Tomita, Taku Horiuchi, Shin-ichi Suzuki, Akira Sakuma
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Patent number: 3942995Abstract: A paper coating composition comprising (A) a pigment as a main ingredient and (B) a binder for said pigment which is either (a) an alkali decomposition product of a yeast or (b) a mixture of said alkali decomposition product of a yeast and an emulsion of a synthetic polymer and/or an aqueous solution of a natural or snythetic polymer and the paper coating composition coated paper product are disclosed.Type: GrantFiled: January 22, 1973Date of Patent: March 9, 1976Assignee: Kanegaufchi Chemical Industries, Co. Ltd.Inventors: Atsushi Ichikawa, Norihiko Adachi, Masayoshi Kawanabe, Yozi Hisada, Yuichi Kohzaki