Patents by Inventor Toshihiro Kikuchi

Toshihiro 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).

  • Publication number: 20050015073
    Abstract: A thrombus suction catheter which is a tube having a distal end opening formed by an angled cut surface. In the distal end opening, at least a part on the proximal end side of the cut surface is formed in a concave shape in an angled direction, and the distal end side of the cut surface is formed to be flat and flexible. With the distal end configuration, suction and crossing are significantly improved.
    Type: Application
    Filed: January 22, 2004
    Publication date: January 20, 2005
    Inventors: Yuichi Kataishi, Satoru Mori, Yoshihiko Sano, Toshihiro Kikuchi, Takaaki Isshiki
  • Publication number: 20040043312
    Abstract: An electrophotographic photosensitive member is provided by forming a photosensitive layer on an electroconductive support.
    Type: Application
    Filed: May 31, 2002
    Publication date: March 4, 2004
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Hiroki Uematsu
  • Patent number: 6664014
    Abstract: An electrophotographic photosensitive member is constituted by disposing a protective layer and a photosensitive layer on an electroconductive support in this order. The protective layer is characterized by containing an electroconductive particles, fluorine-containing resin particles and a binder resin. The photosensitive layer is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity and a low residual potential and also providing good image forming properties under any environmental condition, improved pause memory characteristics and a decreased transfer memory.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: December 16, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Kazushige Nakamura, Michiyo Sekiya
  • Publication number: 20030186144
    Abstract: An electrophotographic photosensitive member, irradiated with semiconductor laser light having a wavelength of 380 to 500 nm, includes a conductive substrate, a charge-generating layer formed thereon; and a charge transport layer formed thereon, the charge transport layer having a transmittance of at least 30% for the semiconductor laser light. A process cartridge mountable to and detachable from an electrophotographic apparatus includes the electrophotographic photosensitive member. An electrophotographic apparatus also includes the electrophotographic photosensitive member.
    Type: Application
    Filed: July 27, 1999
    Publication date: October 2, 2003
    Inventors: MITSUHIRO KUNIEDA, TOSHIHIRO KIKUCHI, TETSURO KANEMARU, YUKA KAISHA
  • Patent number: 6542876
    Abstract: A method of producing multilayered optical filters by using a genetic algorithm that determines an optimal combination of refractive indexes and thicknesses for each layer of the filter is described. The method generates initial values for the component and places the values within a matrix P, where P=(X1, X2, X3, . . . , Xi, . . . , Xs) and Xi is an elementary matrix that includes the refractive index and thickness of each layer i. The method may generate mutated patterns by increasing or decreasing the thicknesses and refractive indexes of the initial pattern. It may also perform a cross-over process, selecting patterns from grouping of mutated patterns. Alternately, the method may perform a process where selected patterns having optical characteristics closest to the desired characteristics from the initial, mutated or crossover patters are chosen. The genetic algorithm utilizing the above processes repeats until the optical characteristics fall within the desired range.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 1, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventors: Toshihiro Kikuchi, Yoshihiro Someno, Toshio Hirai, Yoshiyuki Kawazoe, Hiroshi Mizuseki
  • Patent number: 6416915
    Abstract: An electrophotographic photosensitive member is provided by forming a photosensitive layer on an electroconductive support. The photosensitive layer is provided with particularly excellent durability while retaining good electrophotographic performances when formed as a layer comprising a polymerizate of a hole-transporting compound having at least two chain polymerization function groups in its molecule represented by formula (1) below: &Parenopenst;P1&Parenclosest;aA&Parenopenst;Z—(P2)d)b  (1), wherein A denotes a hole-transporting group, P1 and P2 independently denote a chain polymerization function group and Z denotes a bonding organic group; a, b and d are independently an integer of at least 0 satisfying a+b×d≧2 provided that if a≧2. plural groups P1 can be identical or different; if b≧2, plural groups Z can be identical or different; and if b×d≧2, plural groups P2 can be identical or different.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: July 9, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Hiroki Uematsu
  • Publication number: 20020062226
    Abstract: In a medical diagnosis system, user's medical information received by a communication unit (31) are analyzed by analyzing means 33 with reference to the medical information stored in first data storage means 34. The data-extracting means 36 extracts the result analyzed by the analyzing means 33, the content of doctor's questions from the doctor's questions storage means 35, and information of the user from the first data storage means 34 according to the result analyzed by the analyzing means 33, and determines a physician suitable for the health condition of the user. The result analyzed by the analyzing means 33 or the content of doctor's questions is sent to the user terminal equipment 1 through the communication unit 31. An advice of a specialist to have close examination and the selected physician's name are sent to the user terminal equipment 1 through the communication unit 31. The information of the user and requst for consultation are sent to a physician terminal equipment 2.
    Type: Application
    Filed: October 19, 2001
    Publication date: May 23, 2002
    Inventors: Takehito Ito, Toshihiro Kikuchi
  • Patent number: 6372397
    Abstract: An electrophotographic photosensitive member is constituted by a support and a photosensitive layer disposed on the support. The photosensitive layer comprises a charge-transporting material and a resin obtained by radiation curing of a compound having a functional group represented by the following formula (1): wherein Ar denotes a substituted or unsubstituted arylene group and R1 denotes a hydrogen atom or methyl group.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: April 16, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akio Maruyama, Toshihiro Kikuchi, Shoji Amamiya, Michiyo Sekiya, Hiroki Uematsu
  • Patent number: 6289190
    Abstract: An electrophotographic apparatus includes an electrophotographic photosensitive member; a charger for charging the electrophotographic photosensitive member including a charging member supplied with a voltage and disposed in contact with the photosensitive member so as to form a nip with the photosensitive member to charge the photosensitive member; an exposure device; a developing device; and a transfer device. The photosensitive member includes a surface layer containing a charge-transporting material having an oxidation potential of 0.4-1.0 volt. Charging promoter particles are present at the nip between the photosensitive member and the charging member to injection-charge the photosensitive member. Because of the selection of the charge-transporting material and the presence of the charging promoter particles, the photosensitive member can be effectively injection-charged.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: September 11, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Amamiya, Akio Maruyama, Yukio Nagase, Toshihiro Kikuchi, Koichi Suzuki, Harumi Ishiyama
  • Patent number: 6180303
    Abstract: An electrophotographic photosensitive member, process cartridge and electrophotographic apparatus which use the same photosensitive member, and process for producing the same photosensitive member. The electrophotographic photosensitive member, includes a support and photosensitive layer thereon, wherein said photosensitive layer contains at least one of a hole-transporting compound with two or more chain-polymerizing functional groups in the same molecule and the compound hardened by polymerizing or cross-linking the above hole-transporting compound.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: January 30, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Uematsu, Akio Maruyama, Toshihiro Kikuchi
  • Patent number: 6129853
    Abstract: A filter set for recovering desired blood components from human blood and a method for recovering blood components using the filter set are provided. The filter set includes a bag body and an accommodation vessel for accommodating the bag body therein in a compressed condition. In the method the bag body is provided in the accommodation vessel and is compressed and blood is passed through the compressed bag body. Blood components are adhered to the compressed filter material in the bag body. Thereafter, the compression of the bag body is relieved and a washing solution is passed through the expanded bag body to remove the blood components contained therein.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: October 10, 2000
    Assignee: Nissho Corporation
    Inventors: Norihisa Sasayama, Toshihiro Kikuchi, Shinichiro Harada, Nobuo Takagi, Takahito Wakabayashi
  • Patent number: 6106532
    Abstract: A device for retrieval of defect closure devices, comprising a closure-catch catheter having at a distal end thereof a closure-catching device and at a proximal end thereof, a grip for operating the closure-catching. An elongated sheath having a lumen and is provided at the proximal end thereof with a lateral injection tube and hemostatic device. The catheter is moveably insertable in the lumen.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: August 22, 2000
    Assignee: Nissho Corporation
    Inventors: Kazuyuki Koike, deceased, Toshiki Kobayashi, Katsuya Miyagawa, Yoshikazu Kishigami, Toshihiro Kikuchi
  • Patent number: 5961473
    Abstract: A holder for a blood collection needle includes a cylinder and a needle fixing mechanism disposed at a distal end wall of the cylinder. The needle fixing mechanism includes a first slider, a second slider, a retainer, and a frame. The first slider and the retainer have half female members integrally formed thereon. The first slider is movable toward the second slider such that the mechanism is in a closed state in which the first slider engages the frame such that the half female members come together to define a complete female member. The second slider is movable toward the first slider such that the mechanism is in an open state in which the first slider is disengaged from the frame. The frame is affixed to the cylinder so as to hold the first slider, the second slider, and the retainer on the end wall thereof.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: October 5, 1999
    Assignee: Nissho Corporation
    Inventors: Tsuguo Fujii, Keizo Matsumura, Toshihiro Kikuchi
  • Patent number: 5932383
    Abstract: An electrophotographic photosensitive member is constituted by a support and a photosensitive layer disposed on the support. The photosensitive layer includes a fluorene compound represented by a formula (1) and a stilbene compound represented by a formula (4). The compounds of the formulas (1) and and (4) may preferably be used as a charge transport material. The combination of such compounds is effective in improving resistances to abrasion, crack and crystallization of the resultant photosensitive layer.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: August 3, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kouichi Nakata, Toshihiro Kikuchi, Koichi Suzuki, Kazushige Nakamura, Tetsuro Kanemaru
  • Patent number: 5837412
    Abstract: An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a hindered phenol compound and a fluorene compound represented by the following formula (1): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently substituted or unsubstituted aryl, and R.sub.5 and R.sub.6 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: November 17, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Suzuki, Toshihiro Kikuchi, Kazushige Nakamura, Tetsuro Kanemaru, Kouichi Nakata
  • Patent number: 5797490
    Abstract: A holder for a blood collection needle includes a cylinder and a needle fixing mechanism disposed at a distal end wall of the cylinder. The needle fixing mechanism includes a first slider, a second slider, a retainer, and a frame. The first slider and the retainer have half female members integrally formed thereon. The first slider is movable toward the second slider such that the mechanism is in a closed state in which the first slider engages the frame such that the half female members come together to define a complete female member. The second slider is movable toward the first slider such that the mechanism is in an open state in which the first slider is disengaged from the frame. The frame is affixed to the cylinder so as to hold the first slider, the second slider, and the retainer on the end wall thereof.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: August 25, 1998
    Assignee: Nissho Corporation
    Inventors: Tsuguo Fujii, Keizo Matsumura, Toshihiro Kikuchi
  • Patent number: 5756248
    Abstract: An electrophotographic photosensitive member comprising a substrate and a photosensitive layer formed thereon, and the photosensitive layer contains an arylamine compound expressed by the following general formula (1): ##STR1## wherein R.sub.l is substituted or unsubstituted alkyl, aralkyl, alkaryl or aryl, R.sub.2 -R.sub.8 are each hydrogen, halogen, substituted or unsubstituted alkyl, alkoxy or amino, and Ar is alkyl, aryl or heterocyclic aryl.An electrophotographic apparatus includes the electrophotographic photosensitive member set forth above, a charging means, an exposure means, and a developing means.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: May 26, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Toshihiro Kikuchi, Tetsuro Kanemaru, Kouichi Nakata
  • Patent number: 5729801
    Abstract: An electrophotographic apparatus which comprises an electrophotographic photosensitive member, a charging member provided in contact therewith for charging the electrophotographic photosensitive member by being applied with a voltage, a light exposure device, a developing device, and a transfer device, wherein the electrophotographic photosensitive member has a surface layer containing an organic compound having a reduction potential of 0.5 V or lower, and the charging is injection charging.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: March 17, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akio Maruyama, Noboru Kashimura, Toshihiro Kikuchi, Kazushige Nakamura, Shoji Amamiya, Hiroyuki Tanaka
  • Patent number: 5677095
    Abstract: An electrophotographic photosensitive member has an electroconductive support and a photosensitive layer thereon which contains a compound of Formula 3, 5-11, 13 or 14 as follows: ##STR1##
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: October 14, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Noriko Ohtani, Shin Nagahara, Hisami Tanaka, Teigo Sakakibara, Takakazu Tanaka
  • Patent number: 5669681
    Abstract: A device for securing a mirror in a projection television is disclosed. The device includes a cabinet having an aperture defined by edges. A shoulder element is located adjacent each of the edges, wherein each shoulder element extends underneath the aperture and is positioned for supporting peripheral edges of a reflection surface of the mirror. The device further includes a mirror cover plate located adjacent a back surface of the mirror and affixed to the cabinet. In addition, the device includes a securing element affixed between the back surface and the mirror cover plate for reducing deformation of said mirror.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: September 23, 1997
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Takayasu Ishikawa, Toshihiro Kikuchi, Takashi Kawabe, John R. Whiteford, James R. White