Patents by Inventor Takeshi Senga

Takeshi Senga 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: 12122121
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base made of metal, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a silane coupling agent with a specific structure having an amino group and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, and polyolefins on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: October 22, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yoshihiro Nakai, Toshihide Yoshitani, Shinya Abe, Kazuma Horita, Takeshi Senga
  • Patent number: 12075976
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base containing metal as a constituent material, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a specific silane coupling agent and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, polyurethanes, and polyolefins at least on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: September 3, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yoshihiro Nakai, Toshihide Yoshitani, Shinya Abe, Kazuma Horita, Takeshi Senga
  • Publication number: 20210298564
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base containing metal as a constituent material, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a specific silane coupling agent and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, polyurethanes, and polyolefins at least on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Toshihide YOSHITANI, Shinya ABE, Kazuma HORITA, Takeshi SENGA
  • Publication number: 20210290034
    Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base made of metal, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a silane coupling agent with a specific structure having an amino group and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, and polyolefins on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 23, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro NAKAI, Toshihide YOSHITANI, Shinya ABE, Kazuma HORITA, Takeshi SENGA
  • Publication number: 20180371618
    Abstract: An object of the present invention is to provide a film having a plated-layer precursor layer which is capable of forming a metal layer having excellent roll-to-roll productivity and excellent adhesiveness to a substrate. Another object of the present invention is to provide a film having a patterned plated layer as well as an electroconductive film and a touch panel using the same. The film having a plated-layer precursor layer of the present invention is a film having a plated-layer precursor layer including a substrate, and an undercoat and a plated-layer precursor layer disposed on the substrate in this order from the substrate side, in which the undercoat has a hardness on the surface thereof of 10 N/mm2 or less and a friction coefficient with release paper of 5 or less.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Takahiko ICHIKI, Naoki TSUKAMOTO, Takeshi SENGA, Takehiro KASAHARA, Yuko TERAO, Shuuji KANAYAMA
  • Patent number: 8586189
    Abstract: A gas-barrier film comprising at least one silicon hydronitride layer and at least one silicon nitride layer on a surface of a flexible supporting substrate. The film has an excellent gas-barrier property.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: November 19, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Shigehide Ito, Takeshi Senga
  • Publication number: 20130029122
    Abstract: A resin film containing a resin and from 0.01% by mass to 20% by mass, relative to the resin, of an organic acid satisfying (1) The organic acid comprises structure in which a polyalcohol bonds to a polycarboxylic acid via an ester bond, (2) The total number of the molecules of the polyalcohol and the polycarboxylic acid forming the organic acid is at least 3, and (3) The organic acid has at least one unsubstituted carboxylic acid derived from the polycarboxylic acid.
    Type: Application
    Filed: July 23, 2012
    Publication date: January 31, 2013
    Applicant: FUJIFILM CORPORATION
    Inventors: Nobutaka FUKAGAWA, Yu NAITO, Yoshio ISHII, Jun TAKEDA, Akiko WATANO, Masaki NORO, Takeshi SENGA
  • Patent number: 8133577
    Abstract: A silicon-nitrogen compound film according to the first aspect of the present invention is made of a material expressed by a compositional formula Si3NxOyHz, where 10?(3x+2y)?12, 3.4?x?4.0, 0?y, 0?z<2.0, the peak-area ratio of a first area of a first peak appearing near a wave number of 2150 cm?1 in a Fourier-transform infrared absorption spectrum of the material and corresponding to a Si—H stretching vibration to a second area of a second peak appearing near a wave number of 810 cm?1 in the Fourier-transform infrared absorption spectrum and corresponding to a Si—N stretching vibration is smaller than 0.2, and the silicon-nitrogen compound film has a thickness t (in nanometers) and a density d (g/cm3) which satisfy the inequalities, 1.9?d?2.5, and ?700d+1930?6t??700d+2530.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: March 13, 2012
    Assignee: Fujifilm Corporation
    Inventors: Teruhiko Kuramachi, Tomoo Murakami, Takeshi Senga, Jiro Tsukahara
  • Patent number: 7936035
    Abstract: A photoelectric conversion element comprises: a pair of electrodes; and an organic photoelectric conversion layer between the pair of electrodes, wherein one of the electrodes is a first electrode that collects electrons generated in the organic photoelectric conversion layer; the other one of the electrodes is a second electrode that collects holes generated in the organic photoelectric conversion layer; and the photoelectric conversion element further comprises a hole blocking layer that comprises silicon oxide and inhibits injection of holes into the organic photoelectric conversion layer from the first electrode while applying a bias voltage between the electrodes, the hole blocking layer being disposed between the first electrode and the organic photoelectric conversion layer, and an oxygen/silicon composition ratio of the silicon oxide is 0.5 or greater and 1.2 or less.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: May 3, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Yoshiki Maehara, Takashi Goto, Kiyohiko Tsutsumi, Kyohei Ogawa, Takashi Komiyama, Takeshi Senga, Takehiro Kasahara
  • Publication number: 20110064932
    Abstract: Gas barrier coatings and gas barrier films are used in displays and so forth. Described gas barrier coatings are excellent not only in gas barrier properties but oxidation resistance, transparency and flexibility. A gas barrier coating is based on silicon nitride, and includes: a N/Si compositional ratio of 1 to 1.4; and a hydrogen content of 10 to 30 atomic percent. A peak of an absorption caused by Si—H stretching vibration occurs at a wavenumber ranging from 2170 to 2200 cm?1 in a Fourier transform infrared absorption spectrum of the coating, with a ratio [I(Si—H)/I(Si—N)] between a peak intensity I(Si—H) of the absorption caused by Si—H stretching vibration and a peak intensity I(Si—H) of an absorption caused by Si—N stretching vibration in the vicinity of 840 cm?1 being 0.03 to 0.15.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 17, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Toshiya TAKAHASHI, Takeshi SENGA, Kouji TONOHARA
  • Patent number: 7655407
    Abstract: It is an object of the present invention to provide a method for detecting a target substance in a specimen with the use of fine particles, whereby the target substance can be readily detected with the exclusive use of a single type of probe and the detection limit is improved. The present invention provides a method for detecting a target substance in a specimen which comprises the steps of: allowing a complex of a fine particle and a probe to come into contact with a specimen; and detecting changes in physical properties of the fine particle that are caused by desorption of the probe from the fine particle due to interaction between the target substance in the specimen and the probe.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: February 2, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Hayato Miyoshi, Takeshi Senga
  • Publication number: 20090110896
    Abstract: A silicon-nitrogen compound film according to the first aspect of the present invention is made of a material expressed by a compositional formula Si3NxOyHz, where 10?(3x+2y)?12, 3.4?x?4.0, 0?y, 0?z?2.0, the peak-area ratio of a first area of a first peak appearing near a wave number of 2150 cm?1 in a Fourier-transform infrared absorption spectrum of the material and corresponding to a Si—H stretching vibration to a second area of a second peak appearing near a wave number of 810 cm?1 in the Fourier-transform infrared absorption spectrum and corresponding to a Si—N stretching vibration is smaller than 0.2, and the silicon-nitrogen compound film has a thickness t (in nanometers) and a density d (g/cm3) which satisfy the inequalities, 1.9?d?2.5, and ?700d+1930?6t??700d+2530.
    Type: Application
    Filed: October 30, 2008
    Publication date: April 30, 2009
    Applicant: FUJIFILM CORPORATION
    Inventors: Teruhiko KURAMACHI, Tomoo Murakami, Takeshi Senga, Jiro Tsukahara
  • Publication number: 20090072230
    Abstract: A gas-barrier film comprising at least one silicon hydronitride layer and at least one silicon nitride layer on a surface of a flexible supporting substrate. The film has an excellent gas-barrier property.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 19, 2009
    Inventors: Shigehide ITO, Takeshi Senga
  • Publication number: 20090075098
    Abstract: A device comprising an environment-sensitive element and a barrier laminate in that order on a substrate, wherein the barrier laminate comprises at least one silicon hydronitride layer and at least one other inorganic layer. The device is highly resistant to deterioration by water vapor.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 19, 2009
    Inventors: Jiro TSUKAHARA, Shigehide Ito, Takeshi Senga
  • Publication number: 20090057659
    Abstract: A photoelectric conversion element comprises: a pair of electrodes; and an organic photoelectric conversion layer between the pair of electrodes, wherein one of the electrodes is a first electrode that collects electrons generated in the organic photoelectric conversion layer; the other one of the electrodes is a second electrode that collects holes generated in the organic photoelectric conversion layer; and the photoelectric conversion element further comprises a hole blocking layer that comprises silicon oxide and inhibits injection of holes into the organic photoelectric conversion layer from the first electrode while applying a bias voltage between the electrodes, the hole blocking layer being disposed between the first electrode and the organic photoelectric conversion layer, and an oxygen/silicon composition ratio of the silicon oxide is 0.5 or greater and 1.2 or less.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 5, 2009
    Applicant: FUJIFILM CORPORATION
    Inventors: Yoshiki MAEHARA, Takashi GOTO, Kiyohiko TSUTSUMI, Kyohei OGAWA, Takashi KOMIYAMA, Takeshi SENGA, Takehiro KASAHARA
  • Publication number: 20080220435
    Abstract: It is an object of the present invention to provide a method for detecting a target substance in a specimen with the use of fine particles, whereby the target substance can be readily detected with the exclusive use of a single type of probe and the detection limit is improved. The present invention provides a method for detecting a target substance in a specimen which comprises the steps of: allowing a complex of a fine particle and a probe to come into contact with a specimen; and detecting changes in physical properties of the fine particle that are caused by desorption of the probe from the fine particle due to interaction between the target substance in the specimen and the probe.
    Type: Application
    Filed: February 12, 2008
    Publication date: September 11, 2008
    Applicant: FUJIFILM Corporation
    Inventors: Hayato MIYOSHI, Takeshi SENGA
  • Publication number: 20070098920
    Abstract: An optical film is provided and has a support and an optically anisotropic layer containing a fluorine-containing polymer and a liquid crystal compound. The relationship between the photoelectron takeoff angle ?(°) and the CFn intensity ratio P(%) obtained by AR-XPS measurement of the optically anisotropic layer gives P of 10% to 25% at ? of 20° and P of 15% to 20% at ? of 30°.
    Type: Application
    Filed: September 28, 2006
    Publication date: May 3, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Tsuyoshi Yamamoto, Takeshi Senga, Masaharu Kawai
  • Publication number: 20060232726
    Abstract: A cellulose acylate film, which has small environment dependency, particularly humidity dependency, of optical performance and simultaneously has excellent polarizing plate processability, is provided. The cellulose acylate film has a an equilibrium water content and a humidity dependency of a retardation Rth in a thickness direction of the cellulose acylate film, in which a relationship between the equilibrium water content and the humidity dependency satisfies a condition specified in the specification.
    Type: Application
    Filed: April 13, 2006
    Publication date: October 19, 2006
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tadashi Omatsu, Takeshi Senga, Yutaka Nozoe, Nobutaka Fukagawa
  • Patent number: 6902850
    Abstract: An electrolyte composition that contains a molten salt having a specific structure, a silicon polymer, and a salt of a metal ion of Group 1 or 2 of the Periodic Table; and a non-aqueous electrolyte secondary cell containing the electrolyte composition. Also disclosed are an electrolyte composition that contains a polymer compound having repetitive units of a structure of the following formula (1), and a salt of a metal ion of Group 1 or 2 of the Periodic Table; a method for producing the electrolyte composition; and a non-aqueous electrolyte secondary cell containing the electrolyte composition.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: June 7, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koji Wariishi, Takayasu Yasuda, Takeshi Senga
  • Publication number: 20020155354
    Abstract: An electrolyte composition that contains a molten salt having a specific structure, a silicon polymer, and a salt of a metal ion of Group 1 or 2 of the Periodic Table; and a non-aqueous electrolyte secondary cell containing the electrolyte composition. Also disclosed are an electrolyte composition that contains a polymer compound having repetitive units of a structure of the following formula (1), and a salt of a metal ion of Group 1 or 2 of the Periodic Table; a method for producing the electrolyte composition; and a non-aqueous electrolyte secondary cell containing the electrolyte composition.
    Type: Application
    Filed: February 22, 2002
    Publication date: October 24, 2002
    Inventors: Koji Wariishi, Takayasu Yasuda, Takeshi Senga