Patents by Inventor Yoshiyuki Nagai

Yoshiyuki Nagai 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: 7145925
    Abstract: A laser oscillation apparatus includes a wavelength change unit for driving a wavelength selection element in a band-narrowing module and changing the oscillation wavelength of a laser beam to a target value, and an oscillation history memory for storing the oscillation state of the laser beam as an oscillation history. The wavelength change unit drives the wavelength selection element on the basis of the oscillation history and changes the oscillation wavelength of the laser beam to the target value.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: December 5, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nagai, Naoto Sano
  • Patent number: 7144579
    Abstract: The present invention provides virus vectors of the family Paramyxoviridae in which the transcription start (S) sequence has been modified so as to modify the expression of genes located downstream thereof, a method for producing the vectors, and uses thereof. By measuring the transcription initiation efficiency of the S sequence of each gene carried by Sendai viruses (SeV), it was clarified that the S sequence of F gene has a significantly lower ability to promote transcription than the other three S sequences. When the S sequence of the F gene of wild type Sendai virus was substituted by the S sequence of the P/M/HN gene-type showing a high transcription initiation efficiency, the F gene of the resultant Sendai virus mutant and genes located downstream thereof show elevated expression levels. It was also revealed that this mutant proliferates more quickly than the wild type.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: December 5, 2006
    Assignee: DNAVEC Research, Inc.
    Inventors: Yoshiyuki Nagai, Atsushi Kato, Mamoru Hasegawa, Makoto Inoue
  • Publication number: 20060269333
    Abstract: A fixing apparatus that fuses and firmly adheres an unfixed developer onto a recording medium includes a heating roller and a pressure roller; a belt-shaped cleaning member that is disposed so as to abut on the heating roller and cleans the surface of the heating roller, the cleaning member being impregnated with oil in advance; a feed roller that sends out the cleaning member; a wind-up roller that winds up the cleaning member having cleaned the heating roller; a press-contact roller disposed so as to press the cleaning member against the heating roller on which the cleaning member abuts; and an oil absorbing layer that is disposed on an outer circumferential surface of the press-contact roller and absorbs oil exudation out of the cleaning member.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Inventors: Yoshinobu Tateishi, Hiroaki Hori, Yoshiyuki Nagai, Toshiya Mikita
  • Patent number: 7101685
    Abstract: A method for generating Sendai virus particles by transfecting the Sendai virus genome to a host expressing all genes for the initial viral replication has been developed, enabling the genetic manipulation of Sendai virus and effective utilization of said virus as the vector.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: September 5, 2006
    Assignee: DNAVEC Research Inc.
    Inventors: Yoshiyuki Nagai, Atsushi Kato, Fukashi Murai, Tsuneaki Sakata, Mamoru Hasegawa, Tatsuo Shioda
  • Patent number: 7085302
    Abstract: There is to provide a laser apparatus that emits a laser beam by exciting gas enclosed in a chamber, including a gas characteristic detecting mechanism for detecting a characteristic of the gas in the chamber, and a calculation mechanism for calculating an oscillation wavelength and/or a wavelength spectral bandwidth of the laser beam based on a detected result by the gas characteristic detecting mechanism.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: August 1, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiyuki Nagai
  • Publication number: 20060093009
    Abstract: A gas laser device includes a laser gas supplying device in a chamber for supplying a laser gas to an exciting region in the chamber, and an exciting device for exciting the laser gas supplied to the exciting region. The gas laser device controls the laser gas supplying device so that, when the laser gas is excited by the exciting device, the laser gas is circulated at a first circulating rate and so that, when the laser gas is not excited by the exciting device, the laser gas is circulated at a second circulating rate lower than the first circulating rate.
    Type: Application
    Filed: December 2, 2005
    Publication date: May 4, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoto Sano, Yoshiyuki Nagai
  • Patent number: 7031364
    Abstract: In a gas laser device, a laser gas sealingly stored in a chamber is excited using a discharging electrode that is electrically discharged. Laser light produced by the electrical discharging is totally reflected by a total reflection mirror. An output window partially reflects the laser light and outputs a portion of the laser light reflected between the total reflection mirror and the output window. A blower circulates the laser gas within the chamber so that the laser gas passing an electrical discharging region of the discharging electrode is circulated in the chamber and is returned to the electrical discharging region of the discharging electrode. The blower is operated according to the state of electrical discharging from the discharging electrode.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: April 18, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoto Sano, Yoshiyuki Nagai
  • Publication number: 20050266566
    Abstract: A method for regenerating Sendai virus particles by transfecting the Sendai virus genome to a host expressing all genes for the initial viral replication has been developed, enabling the genetic manipulation of Sendai virus and effective utilization of said virus as the vector.
    Type: Application
    Filed: May 17, 2005
    Publication date: December 1, 2005
    Inventors: Yoshiyuki Nagai, Atsushi Kato, Fukashi Murai, Tsuneaki Sakata, Mamoru Hasegawa, Tatsuo Shioda
  • Publication number: 20050077143
    Abstract: The present invention has for its object to provide an apparatus and a method for transferring boards, and a component mounting apparatus whereby a production efficiency can be improved in accordance with types of boards to be produced. For accomplishing this object, there are arranged a shift device capable of moving a mounted board from a process-finished board transfer path to an unprocessed board transfer path, a controller for controlling this moving, and an identifying device. This arrangement enables switching of a method of transferring boards in accordance with types of boards to be produced, and controlling supply of boards to the component mounting apparatus, so that production efficiency is improved in accordance with types of boards.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 14, 2005
    Inventors: Kurayasu Hamasaki, Makito Seno, Kunio Sakurai, Hiroshi Ota, Akiko Katsui, Yoshiyuki Nagai
  • Patent number: 6870865
    Abstract: A laser oscillation apparatus includes a wavelength change unit for driving a wavelength selection element in a band-narrowing module and changing the oscillation wavelength of a laser beam to a target value, and an oscillation history memory for storing the oscillation state of the laser beam as an oscillation history. The wavelength change unit drives the wavelength selection element on the basis of the oscillation history and changes the oscillation wavelength of the laser beam to the target value.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: March 22, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nagai, Naoto Sano
  • Publication number: 20050030987
    Abstract: A laser oscillation apparatus includes a wavelength change unit for driving a wavelength selection element in a band-narrowing module and changing the oscillation wavelength of a laser beam to a target value, and an oscillation history memory for storing the oscillation state of the laser beam as an oscillation history. The wavelength change unit drives the wavelength selection element on the basis of the oscillation history and changes the oscillation wavelength of the laser beam to the target value.
    Type: Application
    Filed: September 1, 2004
    Publication date: February 10, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshiyuki Nagai, Naoto Sano
  • Publication number: 20050023745
    Abstract: A sheet feeder device is provided with a pick-up roller driving section which is operative to position the pick-up roller into a retracted position spaced a predetermined distance apart from a stack of document sheets on a document tray before and after the operation for feeding the series of document sheets, into a sheet feed position in which the pick-up roller abuts against the stack of document sheets for feeding the document sheets at an occasion of feeding of each of the document sheets in the operation for feeding the series of document sheets, and into the standby position above and close to the height of a stack of a maximum load number of document sheets carried on the document tray during a period from a point in time just after feeding of one sheet to a point in time just before feeding of a succeeding sheet.
    Type: Application
    Filed: June 24, 2004
    Publication date: February 3, 2005
    Inventors: Yasumasa Morimoto, Yoshiyuki Nishizato, Masato Tamehira, Syoutaro Okamoto, Yoshiyuki Nagai
  • Patent number: 6836960
    Abstract: The present invention has for its object to provide an apparatus and a method for transferring boards, and a component mounting apparatus whereby a production efficiency can be improved in accordance with types of boards to be produced. For accomplishing this object, there are arranged a shift device capable of moving a mounted board from a process-finished board transfer path to an unprocessed board transfer path, a controller for controlling this moving, and an identifying device. This arrangement enables switching of a method of transferring boards in accordance with types of boards to be produced, and controlling supply of boards to the component mounting apparatus, so that production efficiency is improved in accordance with types of boards.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: January 4, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kurayasu Hamasaki, Makito Seno, Kunio Sakurai, Hiroshi Ota, Akiko Katsui, Yoshiyuki Nagai
  • Patent number: 6828138
    Abstract: A recombinant Sendai virus vector expressing chemokine is provided. This vector enables large quantity production of clinically useful chemokines. It is also useful for treatment of diseases that can be treated by chemokines.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: December 7, 2004
    Assignee: DNAVEC Research Inc.
    Inventors: Yoshiyuki Nagai, Tatsuo Shioda, Chikaya Moriya
  • Patent number: 6772937
    Abstract: By using an application unit having: a storage chamber for a viscous material; a discharge hole, for the viscous material, provided so as to communicate with the storage chamber, where a viscous-material feeding device for feeding the viscous material to the storage chamber is coupled to the application unit; and a discharge-pressure adjusting device for imparting a discharge pressure to the viscous material stored in the storage chamber, a screen mask having openings corresponding to the application object or the application object itself and the discharge hole of the application unit are brought into contact with each other, either the application unit and the screen mask or the application unit and the application object are moved relative to each other while the discharge pressure is imparted to the viscous material in the storage chamber, and the viscous material is applied onto the application object while the storage chamber is replenished at all times with the viscous material by the viscous-material
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: August 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshinori Mimura, Hiroaki Onishi, Hiroshi Yamauchi, Toshiaki Yamauchi, Jun Shirai, Yoshiyuki Nagai, Muneyoshi Fujiwara
  • Publication number: 20040145112
    Abstract: A roller turning force generator is connected to a driving gear which is mounted on a shaft. The shaft is connected to offset roller assemblies disposed in an offset mechanism via connecting gears. The offset roller assemblies rotatably supported inside the offset mechanism are turned by a driving force transmitted from the roller turning force generator to discharge individual sheets of a printing medium in a sheet transport direction. The offset mechanism is linked to an offsetting force generator so that the offset mechanism can be shifted along a direction perpendicular to the sheet transport direction.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 29, 2004
    Inventors: Yasushi Matsutomo, Yoshiaki Hiramoto, Susumu Murakami, Hideshi Izumi, Yoshie Iwakura, Motokazu Nakao, Yoshiyuki Nagai, Shigeru Yoshida
  • Publication number: 20040137627
    Abstract: A paramyxovirus vector capable of Extransfecting foreign genes and having a replication capacity, is provided. A Sendai virus vector comprising a foreign gene can be constructed by inserting a foreign gene between the viral genes of the Sendai virus genome. These Sendai viruses have a replication capacity and express the foreign gene in transfected cells. The expression level of the foreign gene is higher towards the 3′ end of negative strand RNA, and especially, a high level of expression is obtained when the foreign gene is inserted before the NP gene, and between P gene and M gene. Conversely, the expression decreases towards 5′ end of negative strand RNA, and especially, a relatively low level of expression is obtained when the when the foreign gene is inserted between HN gene and L gene, and between F gene and HN gene. Thus, the vector of the invention enables the regulation of the expression level of a foreign gene.
    Type: Application
    Filed: February 23, 2004
    Publication date: July 15, 2004
    Inventors: Tsuyoshi Tokusumi, Akihiro Iida, Mamoru Hasegawa, Yoshiyuki Nagai
  • Publication number: 20040121308
    Abstract: The present invention provides virus vectors of the family Paramyxoviridae in which the transcription start (S) sequence has been modified so as to modify the expression of genes located downstream thereof, a method for producing the vectors, and uses thereof. By measuring the transcription initiation efficiency of the S sequence of each gene carried by Sendai viruses (SeV), it was clarified that the S sequence of F gene has a significantly lower ability to promote transcription than the other three S sequences. When the S sequence of the F gene of wild type Sendai virus was substituted by the S sequence of the P/M/HN gene-type showing a high transcription initiation efficiency, the F gene of the resultant Sendai virus mutant and genes located downstream thereof show elevated expression levels. It was also revealed that this mutant proliferates more quickly than the wild type.
    Type: Application
    Filed: November 28, 2001
    Publication date: June 24, 2004
    Inventors: Yoshiyuki Nagai, Atsushi Kato, Mamoru Hasegawa, Makoto Inoue
  • Publication number: 20040120744
    Abstract: A two-side image forming apparatus of the present invention is provided with a first sheet-transferring path, for use in one-side image formation, for transferring, to a printed sheet storage section via an image transcribing section, a sheet supplied from an unprinted sheet storage section; and a second sheet-transferring path, connected to the first sheet-transferring path, for supplying a tuned-over one-side printed sheet to the image transcribing section, the two-image forming apparatus being controlled so that a plurality of sheets are transferred concurrently in an overall sheet-transferring path when performing two-side image forming operation, the overall sheet-transferring path including the first sheet-transferring path and the second sheet-transferring path. With this arrangement, it is possible to attain a significant improvement in process efficiency.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 24, 2004
    Inventors: Yasuaki Fukada, Takashi Makiura, Kiwamu Morita, Takashi Kubo, Showtaro Okamoto, Yoshiyuki Nagai
  • Patent number: 6746860
    Abstract: A paramyxovirus vector capable of Extransfecting foreign genes and having a replication capacity, is provided. A Sendai virus vector comprising a foreign gene can be constructed by inserting a foreign gene between the viral genes of the Sendai virus genome. These Sendai viruses have a replication capacity and express the foreign gene in transfected cells. The expression level of the foreign gene is higher towards the 3′ end of negative strand RNA, and especially, a high level of expression is obtained when the foreign gene is inserted before the NP gene, and between P gene and M gene. Conversely, the expression decreases towards 5′ end of negative strand RNA, and especially, a relatively low level of expression is obtained when the when the foreign gene is inserted between HN gene and L gene, and between F gene and HN gene. Thus, the vector of the invention enables the regulation of the expression level of a foreign gene.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: June 8, 2004
    Assignee: DNAVEC Research, Inc.
    Inventors: Tsuyoshi Tokusumi, Akihiro Iida, Mamoru Hasegawa, Yoshiyuki Nagai