Patents by Inventor Takayuki Yagi

Takayuki Yagi 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: 20010052576
    Abstract: This invention relates to an electron optical system array having a plurality of electron lenses. The electron optical system array includes a plurality of electrode structures which are arranged along the paths of a plurality of charged-particle beams and have pluralities of apertures on the paths of the plurality of charged-particle beams. At least one of the plurality of electrode structures includes a substrate having a plurality of apertures for transmitting the plurality of charged-particle beams, and a plurality of electrodes extending from the side surfaces of the plurality of apertures to the peripheries of the plurality of apertures. At least the surface of the substrate is insulated.
    Type: Application
    Filed: March 29, 2001
    Publication date: December 20, 2001
    Inventors: Yasuhiro Shimada, Takayuki Yagi, Haruhito Ono, Hiroshi Maehara
  • Patent number: 6331259
    Abstract: A method for manufacturing ink jet recording heads includes the steps of forming a film of a first inorganic material in the form of ink flow path pattern using a soluble first inorganic material on the substrate having ink-discharge, pressure-generating elements formed thereon, forming a film of a second inorganic material becoming ink flow walls on the film of the first inorganic material using the second inorganic material, forming ink-discharge openings on the film of the second inorganic material above the ink-discharge, pressure-generating elements, and eluting the film of the first inorganic material.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: December 18, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruo Ozaki, Masahiko Ogawa, Masami Ikeda, Ichiro Saito, Takayuki Yagi, Hiroyuki Ishinaga, Toshio Kashino, Tomoyuki Hiroki, Yoshiyuki Imanaka, Masahiko Kubota, Muga Mochizuki
  • Patent number: 6227519
    Abstract: A female mold substrate used for the production of a microprobe tip or probe detecting a tunneling current or weak force includes a substrate provided with a recess section and a heat-flowable layer having flowability by heat treatment formed on the substrate and covering the recess. The female mold substrate is made by forming a recess section on the top surface of a substrate and forming a heat-flowable layer on the top surface of the substrate including the recess section. A microprobe tip detecting a tunneling current or weak force is made by forming a tip material layer on the female mold substrate and transferring the tip of material layer onto another substrate.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: May 8, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Yagi, Tsutomu Ikeda, Yasuhiro Shimada
  • Patent number: 6221267
    Abstract: Spinnable balls each having two surfaces with different optical characteristics can be produced by forming a plurality of balls with the same specific gravity on a thermoplastic film, and softening the thermoplastic film by controlling a heating temperature thereof based on the specific gravity of the balls so that the hemispheres of the balls are embedded into the thermoplastic film by their own weight. A layer having different optical characteristics from those of the balls is then formed on the exposed surface of each ball. Finally, the balls provided with the layers are detached from the thermoplastic film.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: April 24, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsutomu Ikeda, Takayuki Yagi, Etsuro Kishi
  • Patent number: 6215114
    Abstract: An optical prove for detecting or irradiating evanescent light is manufactured by forming a film having a regulated film thickness on a substrate, then forming a recess from the rear surface of the substrate, and forming a through hole in the film from the side of the recess by etching. The obtained optical probe has a micro-aperture at the tip of the through hole and usually, a plurality of optical probes each having a micro-aperture of uniform profile are formed on a single substrate. In the recess, light-receiving or light-irradiating means may be provided.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: April 10, 2001
    Inventors: Takayuki Yagi, Tsutomu Ikeda, Ryo Kuroda, Yasuhiro Shimada
  • Patent number: 6211532
    Abstract: A microprobe chip for detecting evanescent waves includes a photoconductive material and a substrate for supporting the photoconductive material. The photoconductive material is connected to electrodes formed on the substrate. A method for making a microprobe chip for detecting evanescent waves includes forming a film comprising a photoconductive material on a peeling layer of a first substrate, the film having a shape of the microprobe chip, and transferring the film on the peeling layer onto a junction layer provided on a second substrate. A method for making a probe provided with a microprobe chip for detecting evanescent waves includes forming a film comprising a photoconductive material and having the shape of the microprobe chip on a peeling layer of a first substrate, forming a thin film cantilever on a second substrate, and transferring the film on the peeling layer onto a junction layer formed on the thin film cantilever.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: April 3, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Yagi
  • Patent number: 6201644
    Abstract: A light deflection device comprises a segmental sphere body having a deflection face portion for deflecting and transmitting an incident light beam, and a segmental sphere face portion opposing to the deflecting face portion, a base plate for supporting the segmental sphere body in a turnable manner, and a driving means for turning the segmental sphere body, the refractive index of the segmental sphere body being different from the refractive index of a space or medium brought into contact with the deflection face portion. A light deflection device array coomprises the light deflection devices arranged in a one-dimensional or two-dimensional array.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: March 13, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hajime Sakata, Takayuki Yagi
  • Patent number: 6154302
    Abstract: A light deflection device includes a deflection member having a sphere body enclosing a deflection face portion for deflecting a light beam, or a segmental sphere body having the deflection face portion and a segmental sphere face opposing to the deflection face portion. The device also includes a supporting member for supporting the deflection member in a turnable manner, and a driver for turning the deflection member. The driver is provided on the sphere face of the deflection member, and at a position opposing the sphere face or the segmental sphere face of the deflection member to apply a driving force to the sphere face or the segmental face. In one embodiment, a light deflection device array includes the arrangement of light deflection devices in a one-dimensional or two-dimensional array.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 28, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Yagi, Hajime Sakata, Etsuro Kishi
  • Patent number: 6143190
    Abstract: The invention provides a method of producing a through-hole, a substrate used to produce a through-hole, a substrate having a through-hole, and a device using such a through-hole or a substrate having such a through-hole, which are characterized in that: a through-hole can be produced only by etching a silicon substrate from its back side; the opening length d can be precisely controlled to a desired value regardless of the variations in the silicon wafer thickness, and the orientation flat angle, and also regardless of the type of a silicon crystal orientation-dependent anisotropic etchant employed; high productivity, high production reproducibility, and ease of production can be achieved; a high-liberality can be achieved in the shape of the opening end even if temperature treatment is performed at a high temperature for a long time; and a high-precision through-hole can be produced regardless of the shape of a device formed on the surface of a substrate.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: November 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Yagi, Junichi Kobayashi, Yasushi Kawasumi, Genzo Momma, Kenji Makino, Kei Fujita, Yasushi Matsuno, Yukihiro Hayakawa, Masahiro Takizawa
  • Patent number: 6100524
    Abstract: A torsion type probe for scanning probe microscopes, especially for atomic force microscopes, includes a supporting block, a torsion beam device arranged on the supporting block, a thin-film plane plate rotatably supported by the torsion beam means, and a tip formed on the thin-film plane plate. The torsion beam device include a piezoresistor, which is preferably formed in the surface or lateral walls of the torsion beam device, to detect torsion of the torsion beam device as the probe scans the surface of a sample.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: August 8, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Yagi, Shunichi Shido
  • Patent number: 6072764
    Abstract: An information processing apparatus is used for recording and/or reproducing information on a recording medium by means of a plurality of probes. The apparatus comprises a substrate carrying thereon a plurality of probes arranged two-dimensionally in a plane, at least three sensors at three different points on the substrate for detecting the distance between the substrate and the recording medium, a switching circuit for selecting a parallel connection or a serial connection for the sensors, and a regulating system for regulating the relative inclination and the distance between the probe plane and the recording medium surface plane according to the output of the sensors connected in series and that of the sensors connected in parallel.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: June 6, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunichi Shido, Takayuki Yagi
  • Patent number: 6072621
    Abstract: In a display device of the type wherein a display state is selected by rotation of polarized colored balls, the colored balls are formed from a paraelectric material, and the charged state of each colored ball is provided by an electret-forming treatment due to charge-injection to a minute colored ball per se of a paraelectric material or a film of a paraelectric material coating a minute ball. As a result, a colored ball having an increased charge can be produced stably from an inexpensive material.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: June 6, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Etsuro Kishi, Takayuki Yagi, Tsutomu Ikeda
  • Patent number: 6038631
    Abstract: In executing indivisible operations to be executed without being interrupted, pseudo-store instructions PST which do not perform data writing are used to perform a check for the presence or absence in a memory of pages necessary for execution of the indivisible operations. In the event of absence of the necessary pages, the necessary pages are pre-stored in the memory. This prevents the generation of page fault interruptions during the execution of an indivisible operation, thereby enabling the indivisible operation to be implemented on a software basis. A disable interrupt instruction is executed prior to the execution of the indivisible operation as required, and data indicating an address of the disable interrupt instruction is preserved in order to return to the disable interrupt instruction.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: March 14, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichiro Suzuki, Yoichiro Takeuchi, Tadashi Ishikawa, Ikuo Uchihori, Takayuki Yagi
  • Patent number: 6020215
    Abstract: A microstructure comprising a substrate (1), a patterned structure (beam member) (2) suspended over the substrate (1) with an air-space (4) therebetween and supporting structure (3) for suspending the patterned structure (2) over the substrate (1). The microstructure is prepared by using a sacrificial layer (7) which is removed to form the space between the substrate (1) and the patterned structure (2) adhered to the sacrificial layer. In the case of using resin as the material of the sacrificial layer, the sacrificial layer can be removed without causing sticking, and an electrode can be provided on the patterned structure. The microstructure can have application as electrostatic actuator, etc., depending on choice of shape and composition.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: February 1, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Yagi, Masatake Akaike
  • Patent number: 6013573
    Abstract: An air bridge type structure of a bridge shape which joins to a substrate or micro-structure is manufactured by forming an air bridge type structure on a first substrate and transferring the air bridge type structure to a second substrate and/or a micro-structure formed on the second substrate. A mold substrate, comprising a recessed portion provided on the surface of the mold substrate and a peeling layer formed on the recessed portion, is used for formation of the air bridge type structure. A micro-structure can be supported by the air bridge type structure, for example, a probe for detecting tunneling current or micro-force, supported by the air bridge type structure. Accordingly, electrical connection between structures and the substrate or between the structures one to another can be performed, even if there is undercutting underneath the structures.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: January 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Yagi
  • Patent number: 6011261
    Abstract: A probe for detecting minute physical behavior comprises a lever member, particularly in the form of a cantilever, formed of a monocrystalline silicon layer and a tip in the form of one-end-supported beam which is bowed and formed upon the lever member. The probe is manufactured by forming a film of a material with low density and high elasticity on the silicon layer of an SOI substrate, then oxidizing part of the silicon layer and removing the oxidized portion to form a tip with the material as a so-called bird's beak, and finally the SOI substrate is worked to form the cantilever shape of the lever member. The probe can be used for an information recording/reproducing device with good traceability even in high speed scanning over a recording medium.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: January 4, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsutomu Ikeda, Takayuki Yagi, Yasuhiro Shimada, Takeo Yamazaki
  • Patent number: 5994750
    Abstract: There is provided a microstructure comprising a substrate, support members, a lever and an electrode formed on the lever is characterized in that said support members support said substrate and said beam and/or the electrode section with a void interposed therebetween and an electrode is formed on the lower surface of said beam. There are also provided a method of forming such a microstructure and an electrostatic actuator having a beam that is displaced by applying a voltage to the electrodes of the actuator.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: November 30, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Yagi
  • Patent number: 5966787
    Abstract: A process for producing a probe-driving mechanism. A laminate of a first and second insulating layer is placed on a support. Electrode layers and piezoelectric layers are successively laminated on the second insulating layer. Part of the support and second insulating layer is removed to form a cantilever.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: October 19, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaru Nakayama, Yutaka Hirai, Takayuki Yagi, Yuji Kasanuki, Keisuke Yamamoto, Yasuhiro Shimada, Yoshio Suzuki
  • Patent number: 5959957
    Abstract: A probe has a metal tip on a cantilever. A diffused layer made from a metal silicide is formed at an interface between the tip and the cantilever. In the diffused layer, a material for forming the cantilever and a material for forming the tip are diffused.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: September 28, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsutomu Ikeda, Takayuki Yagi, Yasuhiro Shimada
  • Patent number: 5923637
    Abstract: A micro-tip for detecting tunneling current, micro force or magnetic force is manufactured as follows. A recess portion is formed on the surface of a first substrate. A peeling layer are formed on the substrate including the recess of the first substrate. A micro-tip is formed on the peeling layer of the first substrate. A joining layer is formed on a second substrate. The micro-tip on the peeling layer including the recess in the first substrate is transferred onto the joining layer on the second substrate. The peeling layer mainly consists of an oxide or a nitride, of a metal element, a semi-metal element or a semiconductor element.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: July 13, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Shimada, Takayuki Yagi, Tsutomu Ikeda