Patents by Inventor Makoto Muramatsu

Makoto Muramatsu 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: 20150111387
    Abstract: A method is provided for forming a patterned topography on a substrate. The substrate is provided with features formed atop that constitute an existing topography, and a template for directed self-assembly (DSA) is formed surrounding the exposed topography. Further to the method, the exposed template surfaces are chemically treated. In one embodiment, the surfaces are treated with a hydrogen-containing reducing chemistry to alter the surfaces to a less oxidized state. In another embodiment, the surfaces are coated with a first phase of a block copolymer (BCP) to render the surfaces more attractive to the first phase than prior to the coating. The template is then filled with the BCP to cover the exposed topography, and then the BCP is annealed within the template to drive self-assembly in alignment with the topography. Developing the annealed BCP exposes a DSA pattern immediately overlying the topography.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: Mark H. Somervell, Makoto Muramatsu, Benjamen M. Rathsack, Tadatoshi Tomita, Hisashi Genjima, Hidetami Yaegashi, Kenichi Oyama
  • Publication number: 20150072536
    Abstract: A photoresist pattern used for forming a pattern of a block copolymer is formed on a substrate, and then an acid solution is supplied and an alkaline solution is further supplied to the photoresist pattern so as to slim and smooth the photoresist pattern. A block copolymer solution is applied to the substrate on which the smoothed photoresist pattern has been formed, to form a film of the block copolymer, and the film is heated.
    Type: Application
    Filed: April 15, 2013
    Publication date: March 12, 2015
    Inventors: Makoto Muramatsu, Takahiro Kitano, Tadatoshi Tomita, Keiji Tanouchi
  • Publication number: 20150062545
    Abstract: The present invention is a pattern forming method of forming a pattern on a substrate using a block copolymer, the pattern forming method including the steps of: forming a film of a block copolymer containing at least two kinds of polymers on the substrate; heating the film of the block copolymer; irradiating the heated film of the block copolymer with ultraviolet light in an atmosphere of an inert gas; and supplying an organic solvent to the film of the block copolymer irradiated with the ultraviolet light.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 5, 2015
    Applicant: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Takahiro Kitano, Tadatoshi Tomita, Keiji Tanouchi
  • Publication number: 20150041261
    Abstract: A parking brake is provided having the function of monitoring malfunction of the brake, thereby preventing accidents. The parking brake includes an electric motor (10) and a linear motion mechanism (11) which are connected together through a speed reduction mechanism (12). The parking brake further includes a locking pin (50) which can be brought into engagement with the speed reduction mechanism (12) by a solenoid (13). The parking brake further includes a monitoring means for detecting the change in reactance (L) of the solenoid (13). Since the change in reactance (L) as detected corresponds to the displacement of the plunger (53), it is possible to prevent accidents by monitoring deteriorated sliding properties of the locking pin (50) base on the displacement detected.
    Type: Application
    Filed: March 26, 2013
    Publication date: February 12, 2015
    Applicant: NTN CORPORATION
    Inventors: Yui Masuda, Makoto Muramatsu
  • Publication number: 20140290402
    Abstract: An electric linear motion actuator capable of accurately controlling the axial position of an outer ring member is provided. A plurality of planetary rollers are kept in rolling contact with the cylindrical surface formed on the outer periphery of a rotary shaft. Helical ribs formed on the inner periphery of the outer ring member are engaged in circumferential grooves formed on the outer periphery of each of the planetary rollers. A carrier retains the plurality of planetary rollers. A revolution sensor detects the rotation angle of the carrier.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 2, 2014
    Applicant: NTN CORPORATION
    Inventors: Tatsuya Yamasaki, Yui Masuda, Makoto Muramatsu, Masaaki Eguchi, Yuki Saoyama
  • Publication number: 20140283635
    Abstract: A magnetic load sensor unit for use in a linear motion actuator is provided which is less likely to suffer from hysteresis errors during use while being mounted in the linear motion actuator, and which can reduce the axial length of the linear motion actuator. The magnetic load sensor unit is configured to detect the magnitude of an axial load applied to an object from the linear motion actuator. The sensor unit includes a flange member configured to be deflected when a reaction force to the axial load is received through a thrust bearing, a magnetic target which generates magnetic fields; and a magnetic sensor arranged such that its position relative to the magnetic target changes when the flange member is deflected. The flange member has an axial end surface in which a groove is formed with which rolling elements of the thrust bearing are in rolling contact.
    Type: Application
    Filed: October 2, 2012
    Publication date: September 25, 2014
    Applicant: NTN CORPORATION
    Inventors: Yui Masuda, Tatsuya Yamasaki, Makoto Muramatsu
  • Publication number: 20140262634
    Abstract: An electric linear motion actuator is provided which can set the clearance during normal braking operation of an electric brake system. The linear motion actuator includes a load sensor for detecting the magnitude of the load with which a friction pad is pressed against the brake disk, a temperature sensor for compensating for the influence of temperature on the load sensor, and an electronic control unit. The electronic control unit is adapted to calculate a target rotational angle from the position of the electric motor corresponding to the magnitude of the load detected by the load sensor to the position of the electric motor where the clearance is at a predetermined value, and control the electric motor to rotate the electric motor by the target rotational angle.
    Type: Application
    Filed: October 23, 2012
    Publication date: September 18, 2014
    Applicant: NTN Corporation
    Inventors: Tatsuya Yamasaki, Yui Masuda, Makoto Muramatsu, Masaaki Eguchi, Yuki Saoyama
  • Publication number: 20140182980
    Abstract: To provide an electric brake device in an automotive vehicle, which a freezing that takes place while the automotive vehicle is parked can be assuredly avoided with a simplified mechanism. The electric brake device includes an electric motor (2), a braking force application mechanism (4), a lock mechanism (5), a temperature sensor (6) for measuring an ambient temperature of the automotive vehicle, and a freezing preventive power supply unit (7). The freezing preventive power supply unit (7) initiates the supply of an electric power to the electric motor (2) or a drive source (30) of the lock mechanism (5) in the event that while the braking force application mechanism (4) applies a braking force and the lock mechanism (5) is held in a locked condition the temperature sensor (6) detects a preset temperature of the electric brake device immediately before freezing.
    Type: Application
    Filed: August 7, 2012
    Publication date: July 3, 2014
    Applicant: NTN CORPORATION
    Inventors: Makoto Muramatsu, Yuuki Saoyama, Tatsuya Yamasaki, Masaaki Eguchi, Yui Masuda
  • Publication number: 20130292215
    Abstract: A linear motion actuator includes an outer ring member mounted in a housing, a rotary shaft rotated by a motor, planetary rollers mounted between the outer ring member and the shaft and supported by a carrier rotatable about the shaft. A helical rib is formed on the inner surface of the outer ring member which is engaged in helical grooves formed in outer surfaces of the planetary rollers. When the shaft rotates, the planetary rollers rotate and revolve, thereby axially moving the outer ring member. Uneven axial loads applied to the planetary rollers from the outer ring member are supported by thrust bearings disposed between the planetary rollers and an inner disk of the carrier. Aligning seats are provided between each opposed pair of the planetary rollers and the thrust bearings such that the contact surfaces of the aligning seats shift relative to each other under the uneven axial loads.
    Type: Application
    Filed: January 12, 2012
    Publication date: November 7, 2013
    Inventors: Masaaki Eguchi, Makoto Muramatsu, Tatsuya Yamasaki, Makoto Yasui
  • Publication number: 20130186717
    Abstract: A disk brake system includes a disk, brake pads, and a linear motion actuator including an electric motor, a rotary shaft coupled to the motor through a reduction gear mechanism, planetary rollers formed with helical grooves in their outer surfaces, and an outer ring member having a helical rib engages in the helical grooves. The outer ring is coupled to one of the brake pads. When the rotary shaft is rotated by the motor, the outer ring member is moved axially through the planetary rollers, and the brake pads are pressed against the disk. The linear motion actuator further includes a locking mechanism including engaging holes formed in an intermediate gear of the reduction gear mechanism at equal intervals, a locking pin, and a linear solenoid for moving the locking pin until the pin engages in one of the engaging holes, thus locking the motor.
    Type: Application
    Filed: October 17, 2011
    Publication date: July 25, 2013
    Inventors: Makoto Muramatsu, Tatsuya Yamasaki, Masaaki Eguchi, Tomomi Goto
  • Publication number: 20130168192
    Abstract: An electric linear motion actuator is proposed which includes planetary rollers mounted between the radially inner surface of an outer ring member and the radially outer surface of a rotary shaft, and a carrier rotatable about the rotary shaft and including radially movable roller shafts rotatably supporting the respective planetary rollers. Elastic rings each having circumferentially separate ends are each wrapped around the roller shafts to radially inwardly bias the roller shafts, thereby bringing the respective planetary rollers into elastic contact with the radially outer surface of the rotary shaft. Each elastic ring is prevented from rotating relative to the roller shafts, thereby preventing one of the roller shafts from being axially aligned with the gap between the circumferential separate ends, causing the elastic ring to be radially compressed and thus making it impossible for the elastic rings to radially bias the roller shafts.
    Type: Application
    Filed: August 31, 2011
    Publication date: July 4, 2013
    Inventors: Makoto Yasui, Makoto Muramatsu, Masaaki Eguchi, Tatsuya Yamasaki, Tomomi Goto
  • Publication number: 20130048443
    Abstract: An electric brake system is proposed which includes an electric linear motion actuator and can generate the required braking force with high accuracy. A load sensor (30) is provided in a motion converting mechanism of the actuator which converts the rotary motion of a rotary shaft (4) to which the rotation of an electric motor (2) is transmitted to linear motion of an outer ring member (5) as an output member. The load sensor (30) detects the pushing force with which the outer ring member (5) linearly drives a driven member. With this arrangement, if the driven member is a braking member of an electric brake system, it is possible to directly detect the braking force applied by the driven member and thus to accurately generate the required braking force.
    Type: Application
    Filed: April 27, 2011
    Publication date: February 28, 2013
    Inventors: Makoto Muramatsu, Tatsuya Yamasaki, Masaaki Eguchi, Tomomi Goto
  • Publication number: 20120328273
    Abstract: Disclosed is a thermal processing apparatus and method that can acquire a high throughput and reduce the occupation area of the thermal processing apparatus. A wafer is heated by an LED module that irradiates infrared light corresponding to the absorption wavelength of the wafer, and therefore, the wafer can be rapidly heated. Since an LED is used as a heat source and a temperature rise of LED is small, a cooling process after the heating process can be performed in the same process area as the heating process area. As a result, an installation area of the thermal processing apparatus can be reduced. Since the time for moving between a heating process area and a cooling process area can be saved, a time required for a series of processes including the heating process and the subsequent cooling process can be shortened, thereby improving a throughput.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 27, 2012
    Inventors: Hisashi KAWANO, Ryouichi Uemura, Kousuke Yoshihara, Shigeru Kasai, Keiji Tanouchi, Makoto Muramatsu, Mitsuaki Iwashita, Masatake Yoneda, Kazuhiro Ooya
  • Publication number: 20120207940
    Abstract: A pattern forming method includes: forming a layer of a block copolymer, including at least two kinds of polymers, on a substrate; heating the block copolymer layer; irradiating UV light on the heated block copolymer layer; and supplying a developing solution to the UV light-irradiated block copolymer layer.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 16, 2012
    Applicants: TOKYO ELECTRON LIMITED, KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto MURAMATSU, Yuriko SEINO
  • Patent number: 8168377
    Abstract: The pattern forming method includes forming a catalyst film on a base layer having an uneven surface, wherein the catalyst layer is formed along the uneven surface of the base layer; forming a coating film by coating a fluid material on the catalyst film; forming an insoluble layer which is insoluble in a solvent in the coating film by reacting the coating film along the catalyst film; and maintaining the insoluble layer by removing an unreacted portion of the coating film by using the solvent.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: May 1, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Kazuyuki Mitsuoka, Makoto Muramatsu, Mitsuaki Iwashita
  • Patent number: 8142080
    Abstract: A radially outer portion of the seal member is fitted in each of a pair of seal grooves formed in the radially outer surface of an outer ring at both ends thereof. A seal lip formed at the radially inner portion of each seal member is brought into elastic contact with an inner seal surface of each of annular grooves formed in the radially outer surface of an inner ring at both ends thereof. The contact portion of the seal surface that is in elastic contact with the seal lip has a circumferential flatness of 5 to 20 ?m. With this arrangement, it is possible to improve sealability at the contact portions, thereby preventing entry of e.g. muddy water into the bearing.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: March 27, 2012
    Assignee: NTN Corporation
    Inventor: Makoto Muramatsu
  • Patent number: 8084372
    Abstract: In the present invention, a coating solution containing polysilazane is applied to a substrate to form a coating film. Thereafter, an ultraviolet ray is applied to the coating film formed on the substrate to cut a molecular bond of polysilazane in the coating film. Then, the coating film in which the molecular bond of polysilazane has been cut is oxidized while the coating film is being heated. Then, the oxidized coating film is baked at a baking temperature equal to or higher than a heating temperature when the coating film is oxidized.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: December 27, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Gen You, Makoto Muramatsu, Hiroyuki Fujii, Shouichi Terada, Takanori Nishi
  • Publication number: 20110194795
    Abstract: An object is to prevent premature peeling on the raceways due to hydrogen embrittlement using an inexpensive means. The inner and outer races 2 and 3 are made of high-carbon chrome bearing steel SUJ2, and is subjected to high-temperature tempering of 260° C. or higher, and the grease A contains a molybdate and an organic acid salt. With this arrangement, it is possible to prevent premature peeling on raceways 2a and 3a due to hydrogen embrittlement with such simple means as to slightly increase the tempering temperature and specify the composition of the grease A.
    Type: Application
    Filed: May 25, 2009
    Publication date: August 11, 2011
    Inventors: Makoto Muramatsu, Shohei Fukama
  • Patent number: 7964684
    Abstract: An antireflection film forming composition, includes: a polymerized product of Compound (I) having m number of RSi(O0.5)3 units, in which m stands for an integer of from 8 to 16, and Rs each independently represents a non-hydrolyzable group, with the proviso that at least two of Rs each represents a vinyl- or ethynyl-containing group, wherein each of the RSi(O0.5)3 units is linked to another RSi(O0.5)3 unit while having an oxygen atom in common and constitutes a cage structure, and wherein, of solids contained in the composition, the polymerized product obtained by a polymerization reaction of Compound (I) amounts to 60 mass % or greater and Compound (I) amounts to 15 mass % or less.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: June 21, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Kensuke Morita, Makoto Muramatsu, Kouji Tonohara
  • Publication number: 20110002568
    Abstract: A snap cage (5) includes an annular cage body having a plurality of pockets (11) defined therein at respective circumferential locations for retaining a corresponding number of balls. Each of the pockets (11) also has an inner face formed with a recessed area (16) extending from a pocket open edge on a cage inner diametric side towards a cage outer diametric side.
    Type: Application
    Filed: March 19, 2009
    Publication date: January 6, 2011
    Inventors: Mitsuo Kawamura, Norihide Sato, Tomoya Sakaguchi, Takayuki Kawamura, Hikaru Ishida, Makoto Muramatsu, Tomoaki Goto