Patents by Inventor Chikara Aizawa
Chikara Aizawa 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: 7208163Abstract: It was found that a mutation of an amino acid at a specific position in the P protein of a morbillivirus gives a temperature-sensitivity character to a virus. By introducing this mutation, a virus to which a temperature-sensitivity character has been introduced can be produced. According to this invention, attenuated viruses useful in the preparation of vaccines can be easily produced.Type: GrantFiled: October 18, 2000Date of Patent: April 24, 2007Assignee: The Kitasato InstituteInventors: Katsuhiro Komase, Noriko Suzuki, Tetsuo Nakayama, Chikara Aizawa
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Patent number: 6875436Abstract: It was found that a mutation of an amino acid at a specific position in the F protein of a morbillivirus induces a reduction in the cell-fusion ability. By introducing this mutation, a virus having a reduced cell-fusion ability can be produced. Thus, attenuated viruses useful in the preparation of vaccines can be easily produced.Type: GrantFiled: October 18, 2000Date of Patent: April 5, 2005Assignee: The Kitasata InstituteInventors: Katsuhiro Komase, Tetsuo Nakayama, Chikara Aizawa
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Patent number: 6734948Abstract: An optical printer capable of controlling the amount of exposure light, and so forth, accurately is disclosed, and the optical printer comprises a light source irradiating light and an optical shutter producing exposure light for exposing a photosensitive object by controlling transmission of the light from the light source.Type: GrantFiled: January 25, 2002Date of Patent: May 11, 2004Assignee: Citizen Watch Co., Ltd.Inventors: Shigeru Futakami, Chikara Aizawa, Toshiyuki Inage, Kenji Mito
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Publication number: 20020097383Abstract: An optical printer capable of controlling the amount of exposure light, and so forth, accurately is disclosed, and the optical printer comprises a light source irradiating light and an optical shutter producing exposure light for exposing a photosensitive object by controlling transmission of the light from the light source.Type: ApplicationFiled: January 25, 2002Publication date: July 25, 2002Applicant: CITIZEN WATCH CO., LTD.Inventors: Shigeru Futakami, Chikara Aizawa, Toshiyuki Inage, Kenji Mito
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Patent number: 6397007Abstract: A photosensitive element (19) is provided on its photosensitive face side with a non-photosensitive portion with a width D1 extending from a front end to a rear end side in a conveying direction and a non-photosensitive portion with a width D2 extending from the rear end to the front end side. A position of light irradiation of an optical head onto the photosensitive element is set within a range extending a first point at a distance of D1 from the center of the conveying roller (5) on the upstream side in the conveying direction to a second point at a distance of D2 from the center of the conveying roller (5) on the downstream side in the conveying direction.Type: GrantFiled: February 9, 2001Date of Patent: May 28, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Masubuchi, Shigeru Futakami, Chikara Aizawa
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Patent number: 6366338Abstract: A line-scanning optical printer, which forms an image on a sensitized sheet (25) by projecting a linear light having a given width and length thereto while successively scanning individual lines in the direction of the width, comprises a casing (50) having light shielding properties and including a window portion for radiating the linear light to the outside, a light emitting element (60), which substantially functions as a point light source and is stored in the casing, an optical system (72, 71, 73) for guiding light from the light emitting element (60) as the linear light to the window portion, and a liquid crystal optical shutter (80) attached to the window portion.Type: GrantFiled: January 11, 2000Date of Patent: April 2, 2002Assignee: Citizen Watch Co. Ltd.Inventors: Sadao Masubuchi, Shigeru Futakami, Masaaki Matsunaga, Masafumi Yokoyama, Akira Shiota, Maki Wakita, Kazunari Takahashi, Shinichi Nonaka, Chikara Aizawa
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Publication number: 20020025146Abstract: A storage medium conveying apparatus includes a container for containing the storage medium; a conveying unit provided adjacent to the container for conveying the storage medium; a taking-out member for taking the storage medium out from the cartridge and executing reciprocating motion between a side of the conveying unit and a side of the container in order to transfer the storage medium from the container to the conveying unit; and a single motor for driving the conveying unit and the taking-out member.Type: ApplicationFiled: August 30, 2001Publication date: February 28, 2002Applicant: Citizen Watch Co., Ltd.Inventors: Shigeru Futakami, Chikara Aizawa
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Patent number: 6275247Abstract: The present invention uses LEDs as the light source in a optical printer employing a line scanning method in which an image is produced by relative motion of the light to a photosensitive medium. LEDs are arranged on a mounting substrate with LED pairs, each pair being of the same color, disposed symmetrically as to the center point of the line. Similarly, the power supply lead wires for the LEDs are also disposed symmetrically. In mounting the components on the mounting substrate, a light-intercepting material is used for intercepting light from the side faces of the LEDs.Type: GrantFiled: October 9, 1998Date of Patent: August 14, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Masubuchi, Sigeru Futakami, Masaaki Matsunaga, Masafumi Yokoyama, Akira Shiota, Shinichi Nonaka, Chikara Aizawa
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Patent number: 6262757Abstract: The present invention employs LEDs and a liquid crystal shutter driven in synchronization with the position of the photosensitive paper, thereby eliminating image distortion even where the head of the optical printer apparatus is subjected to unanticipated load during scanning by the head. A rotary encoder (320) is provided on the rotating shaft of the motor (310) that drives the optical head (100), and the drive timing for the LEDs (110) and the liquid crystal shutter (150) is synchronized with the output of the rotary encoder.Type: GrantFiled: October 9, 1998Date of Patent: July 17, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Masubuchi, Sigeru Futakami, Masaaki Matsunaga, Masafumi Yokoyama, Akira Shiota, Shinichi Nonaka, Maki Wakita, Chikara Aizawa
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Patent number: 5182109Abstract: A vaccine preparation comprising in combination a vaccine and a toxin or subunit thereof as an effective component. The toxin is preferably a bacterial toxin, e.g. cholera toxin, staphylococcal .alpha.-hemolysin, staphylococcal .delta.-hemolysin, vibrio thermostable direct hemolysin, pertussis toxin or E. coli heat-labile toxin. The toxin can be a B subunit or a part of a B subunit of a toxin. The vaccine can be influenza vaccine, pertussis vaccine, Japanese encephalitis vaccine, mixed vaccine of pertussis, diphtheria and tetanus toxoid, hepatitis B vaccine, rota vaccine, measles vaccine, rubella vaccine, mumps vaccine, combined vaccine of measles, rubella and mumps, or mycoplasma vaccine. The ratio of vaccine to toxin or subunit thereof is 1:0.0001-1:10,000 (w/v). The vaccine can be intranasal vaccine, or can be in injectable form, spray form or oral administration form.Type: GrantFiled: April 10, 1989Date of Patent: January 26, 1993Assignees: National Institute of Health, The Kitasato InstituteInventors: Shinichi Tamura, Takeshi Kurata, Chikara Aizawa, Takashi Nagamine