Patents by Inventor Yasuyuki Shirai
Yasuyuki Shirai 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: 11817309Abstract: Provided are: a method of producing heated ozone water, the method capable of producing heated ozone water having an extremely high ozone concentration by suppressing a reduction in the ozone concentration in high-concentration heated ozone water; heated ozone water; and a semiconductor wafer-cleaning liquid using the heated ozone water. A method of producing heated ozone water obtained by dissolving ozone in pure water, the method being characterized by including: adjusting a pH of the pure water to 3 or less by adding acid to the pure water; to obtain an acid water, dissolving an ozone gas in the acid water; and heating the pure water, the acid water or the ozone water, to 60° C. or more.Type: GrantFiled: October 23, 2020Date of Patent: November 14, 2023Assignees: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.Inventors: Yasuyuki Shirai, Takeshi Sakai, Takayuki Jizaimaru
-
Publication number: 20230175115Abstract: A selective film forming method includes: preparing a substrate including a first film having a first surface and a second film having a second surface, the second film being different from the first film; selectively adsorbing a secondary alcohol gas and/or a tertiary alcohol gas to the second surface; and selectively forming a film on the first surface by supplying at least a raw material gas.Type: ApplicationFiled: March 29, 2021Publication date: June 8, 2023Inventors: Shuji AZUMO, Kota UMEZAWA, Katsutoshi ISHII, Akira SHIMIZU, Akinobu TERAMOTO, Tomoyuki SUWA, Yasuyuki SHIRAI, Takezo MAWAKI
-
Publication number: 20230101477Abstract: Provided is a stripping method capable of stripping a resist while suppressing the time and cost of processing required for stripping, while giving sufficient consideration to the load on the environment. The resist stripping method is a method for stripping a resist film-formed on a substrate, including: a pretreatment step of exposing the resist to a heated steam in a predetermined temperature range for a predetermined time; and a stripping step of stripping the resist exposed to the heated steam in the pretreatment step by using a resist stripping liquid, wherein the predetermined temperature range and the predetermined time are set according to the resist.Type: ApplicationFiled: December 7, 2022Publication date: March 30, 2023Applicants: NOMURA MICRO SCIENCE CO., LTD., TOHOKU UNIVERSITYInventors: Takayuki Jizaimaru, Takao Funakoshi, Yasuyuki Shirai, Hisashi Fujimoto, Takeshi Sakai
-
Patent number: 11295947Abstract: Conventional ozone water is still insufficient in the removal rate and cleaning ability of resist required in today's semiconductor manufacturing field, and it does not fully meet the expectation of further improvement in the effects of sterilization, deodorization, and cleaning in the fields such as cleaning of foodstuffs, cleaning of process equipment and tools, and cleaning of fingers, as well as in the fields such as deodorization, sterilization, and preservation of freshness of foodstuffs. The above problem can be solved by defining the values of a plurality of specific production parameters in the production of ozone water into specific ranges.Type: GrantFiled: April 26, 2019Date of Patent: April 5, 2022Assignees: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.Inventors: Yasuyuki Shirai, Takeshi Sakai, Takayuki Jizaimaru
-
Publication number: 20210163850Abstract: Conventional ozone water is still insufficient in the removal rate and cleaning ability of resist required in today's semiconductor manufacturing field, and it does not fully meet the expectation of further improvement in the effects of sterilization, deodorization, and cleaning in the fields such as cleaning of foodstuffs, cleaning of process equipment and tools, and cleaning of fingers, as well as in the fields such as deodorization, sterilization, and preservation of freshness of foodstuffs. The above-problem can be solved by defining the values of a plurality of specific production parameters in the production of ozone water into specific ranges.Type: ApplicationFiled: April 26, 2019Publication date: June 3, 2021Applicants: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.Inventors: Yasuyuki SHIRAI, Ken SAKAI, Takayuki JIZAIMARU
-
Publication number: 20210043440Abstract: Provided are: a method of producing heated ozone water, the method capable of producing heated ozone water having an extremely high ozone concentration by suppressing a reduction in the ozone concentration in high-concentration heated ozone water; heated ozone water; and a semiconductor wafer-cleaning liquid using the heated ozone water. A method of producing heated ozone water obtained by dissolving ozone in pure water, the method being characterized by including: adjusting a pH of the pure water to 3 or less by adding acid to the pure water; to obtain an acid water, dissolving an ozone gas in the acid water; and heating the pure water, the acid water or the ozone water, to 60° C. or more.Type: ApplicationFiled: October 23, 2020Publication date: February 11, 2021Applicants: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.Inventors: Yasuyuki SHIRAI, Takeshi SAKAI, Takayuki JIZAIMARU
-
Patent number: 9476137Abstract: A metal oxide film suitable for protection of metals, composed mainly of aluminum. A metal oxide film includes a film of an oxide of a metal composed mainly of aluminum, having a thickness of 10 nm or greater, and exhibiting a moisture release rate from the film of 1E18 mol./cm2 or less. Further, there is provided a process for producing a metal oxide film, wherein a metal composed mainly of aluminum is subjected to anodic oxidation in a chemical solution of 4 to 10 pH value so as to obtain a metal oxide film.Type: GrantFiled: May 3, 2012Date of Patent: October 25, 2016Assignees: Tohoku University, Mitsubishi Chemical CorporationInventors: Tadahiro Ohmi, Yasuyuki Shirai, Hitoshi Morinaga, Yasuhiro Kawase, Masafumi Kitano, Fumikazu Mizutani, Makoto Ishikawa
-
Patent number: 9103338Abstract: An electric motor drives a variable capacity backup hydraulic pump that can supply pressure oil to an actuator when a loss or reduction occurs in the function of an aircraft central hydraulic power source. A power source unit rectifies electric power supplied from a variable frequency supply. A driver supplies the electric power from the power source unit, and drives the electric motor so as to rotate the pump at a predetermined constant rotational speed. The constant rotational speed is set, based on the change in the efficiency of each of the pump, the electric motor, and the driver with respect to the rotational speed of the pump, such that the overall efficiency, obtained as a product of these efficiencies, has a maximum value.Type: GrantFiled: May 24, 2011Date of Patent: August 11, 2015Assignee: Nabtesco CorporationInventors: Atsushi Fukui, Yasuyuki Shirai
-
Patent number: 9088185Abstract: An electromechanical actuator is provided with a power disconnection mechanism including a case portion, inner shaft portion, supporting portions, and connecting members. The case portion is fixed to an electric motor. The inner shaft portion within the case portion is fixed to a screw portion. The supporting portions are installed so as to support a load parallel to the axial direction between the case portion and the inner shaft portion, inserted into the inner shaft portion, and slidable along axial grooves and circumferential grooves with respect to the case portion. The connecting members break connection between the case portion and the inner shaft portion and disconnect transmission of power when torque of a prescribed amount or larger acts.Type: GrantFiled: October 31, 2012Date of Patent: July 21, 2015Assignee: Nabtesco CorporationInventors: Ryota Shigetomo, Yasuyuki Shirai
-
Patent number: 8807573Abstract: An annular metal gasket for sealing a space between members by being pressed in the vertical direction in a state of being mounted between the members, the metal gasket comprising an annular outer ring having a substantially C-shaped cross-section and having a circumferential-direction opening formed therein, and an annular inner ring fitted inside the outer ring. The inner ring is formed so as to have a polygonal cross-section. Bend parts having an Inner angle larger than 180° are formed between the upper corner part and the inner- and outer-circumference-side corner parts; and between the lower corner part and the inner- and outer-circumference-side corner parts.Type: GrantFiled: January 12, 2012Date of Patent: August 19, 2014Assignees: Tohoku University, Nippon Valqua Industries, Ltd.Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Yoshinori Uchino, Masamichi Iwaki
-
Patent number: 8724974Abstract: A vaporizer, capable of stabilizing the behavior of pressure inside the vaporizer, includes a chamber having an inlet and an outlet, a heating device that heats the inside of the chamber, a partition wall structure 13 that is provided inside the vaporizer and partitions the liquid material inside the chamber into a plurality of sections, and liquid distribution portions 20 that are provided at the lower portion of the partition wall structure 13 and that allow liquid distribution among the sections partitioned by the partition wall structure 13, and the partition wall structure includes a grid-like, honeycomb-shaped, mesh-like, or pipe-shaped partition wall.Type: GrantFiled: August 1, 2012Date of Patent: May 13, 2014Assignees: Fujikin Incorporated, Tohoku UniversityInventors: Tadahiro Ohmi, Yasuyuki Shirai, Masaaki Nagase, Satoru Yamashita, Atsushi Hidaka, Ryousuke Dohi, Kouji Nishino, Nobukazu Ikeda, Keiji Hirao
-
Patent number: 8618711Abstract: A three-phase DC motor includes a rotor 30 having poles 30a and a stator 28 having core units 32b arranged around the rotor 30. Three or more coils are wound around the core units 32b. An outer surface of the rotor 30 has alternating poles of N and S around the circumference of the rotor 30. The coils 35a, 35b, 35c, and 35d are placed only within a range defined by second virtual planes P2 specified respectively by rotating a first virtual plane P1 according to a predetermined angle in a rotor rotating direction and a direction opposite thereto. The first virtual plane P1 passes through the axial center of the rotor 30. The inner surface of the adjacent 3N (N=1, 2, 3, . . . ) number of core units 32b are delimited within a width of one pole on the outer surface of the rotor 30.Type: GrantFiled: January 18, 2012Date of Patent: December 31, 2013Assignee: Nabtesco CorporationInventor: Yasuyuki Shirai
-
Publication number: 20130300070Abstract: An annular metal gasket for sealing a space between members by being pressed in the vertical direction in a state of being mounted between the members, the metal gasket comprising an annular outer ring having a substantially C-shaped cross-section and having a circumferential-direction opening formed therein, and an annular inner ring fitted inside the outer ring. The inner ring is formed so as to have a polygonal cross-section. Bend parts having an inner angle larger than 180° are formed between the upper corner part and the inner- and outer-circumference-side corner parts; and between the lower corner part and the inner- and outer-circumference-side corner parts.Type: ApplicationFiled: January 12, 2012Publication date: November 14, 2013Applicants: NIPPON VALQUA INDUSTRIES, LTD., TOHOKU UNIVERSITYInventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Yoshinori Uchino, Masamichi Iwaki
-
Patent number: 8573151Abstract: A conventional microwave plasma processing apparatus, even when krypton (Kr) is used as a plasma-generation gas, can only obtain an oxide film or a nitride film having the same level of characteristics as those obtained when a rare gas such as argon (Ar) is used as a plasma-generation gas. Accordingly, instead of forming a dielectric window of a microwave plasma processing apparatus with only a ceramic member, a planarization film capable of obtaining a stoichiometric SiO2 composition by thermal treatment is coated on one of a plurality of surfaces of the ceramic member, the surface facing a process space, and then thermally-treated, thereby forming a planarization insulation film having a very flat and dense surface. A corrosion-resistant film is formed on the planarization insulation film.Type: GrantFiled: February 26, 2009Date of Patent: November 5, 2013Assignees: Tokyo Electron Limited, Tohoku UniversityInventors: Tadahiro Ohmi, Masaki Hirayama, Tetsuya Goto, Yasuyuki Shirai, Masafumi Kitano, Kohei Watanuki, Takaaki Matsuoka, Shigemi Murakawa
-
Patent number: 8562320Abstract: A resin molding device which molds a resin tube 1 from a molten resin has a tube molding portion 14 and a spindle 15 as jigs which define inner and outer diameters of the resin tube.Type: GrantFiled: March 18, 2008Date of Patent: October 22, 2013Assignees: National University Corporation Tohoku University, Nichias CorporationInventors: Tadahiro Ohmi, Yasuyuki Shirai, Jiro Yamanaka, Kengo Iwahara, Kouji Fukae
-
Patent number: 8505399Abstract: An object of the present invention is to provide an electric actuator having a structure capable of reducing an external force or impact acting on a screw shaft when a piston rod is at a stretched position. An electric actuator includes a nut, a piston rod, recesses, keys, holes, and a tapered portion. Into the nut, a screw shaft is screwed. The piston rod moves linearly via the nut. The recesses are formed on an outer circumferential surface of the nut. The keys are each provided to a recess. The tapered portion is formed on an inner wall of the cylinder body. The piston rod advances to move the keys outward to cause the keys to fit to the tapered portion to block retraction of the piston rod.Type: GrantFiled: December 21, 2009Date of Patent: August 13, 2013Assignee: Nabtesco CorporationInventors: Masanori Hirai, Yasuyuki Shirai, Tsunehisa Nomura, Koji Itoh
-
Patent number: 8485534Abstract: A metal gasket includes an outer ring that is formed in a substantially C-shaped cross-section having an opening in a circumferential direction and an inner ring that is disposed inside the outer ring, wherein the inner ring is configured in a polygonal shape of a cross section, and a pair of corner portions opposing to each other in the inner ring are disposed on inner circumferential faces on the both sides of the opening in the outer ring.Type: GrantFiled: May 7, 2009Date of Patent: July 16, 2013Assignees: Tohoku University, Nippon Valqua Industries, Ltd.Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Masayuki Noguchi, Tsutomu Yoshida, Akira Muramatsu, Satoshi Kumaki, Yuki Kuwamura
-
Patent number: 8420974Abstract: A fixing structure for a welding electrode and a welding head is shown which enable improvement of durability of a welding electrode, improvement of work efficiency in welding, and a reduction of time required for welding and also which make it possible to execute welding for an extended time with high reliability. In the fixing structure, a fixed section of a welding electrode is inserted via a thermally conductive material into an inserting section of a fixing base and a peripheral surface of the fixed section of the welding electrode is uniformly contacted to the fixing base to affix the welding electrode to the fixing base.Type: GrantFiled: October 8, 2002Date of Patent: April 16, 2013Assignees: Kabushiki Kaisha Ultraclean Technology Research InstituteInventors: Tadahiro Ohmi, Takahisa Nitta, Yasuyuki Shirai, Osamu Nakamura
-
Publication number: 20130084059Abstract: A vaporizer, capable of stabilizing the behavior of pressure inside the vaporizer, includes a chamber having an inlet and an outlet, a heating device that heats the inside of the chamber, a partition wall structure 13 that is provided inside the vaporizer and partitions the liquid material inside the chamber into a plurality of sections, and liquid distribution portions 20 that are provided at the lower portion of the partition wall structure 13 and that allow liquid distribution among the sections partitioned by the partition wall structure 13, and the partition wall structure includes a grid-like, honeycomb-shaped, mesh-like, or pipe-shaped partition wall.Type: ApplicationFiled: August 1, 2012Publication date: April 4, 2013Applicants: TOHOKU UNIVERSITY, FUJIKIN INCORPORATEDInventors: Tadahiro Ohmi, Yasuyuki Shirai, Masaaki Nagase, Satoru Yamashita, Atsushi Hidaka, Ryousuke Dohi, Kouji Nishino, Nobukazu Ikeda, Keiji Hirao
-
Patent number: 8308440Abstract: A vacuum processing apparatus having a vacuum chamber includes a gate valve arranged in the vacuum chamber and including a valve body which moves in a direction relative to an exhaust port of the vacuum chamber to open/close the exhaust port, and a driving unit configured to move the valve body, a connecting portion having one end connected to the exhaust port of the vacuum chamber and formed in a direction inclined from a moving direction of the valve body, and an exhaust pump connected to an opposite end of the connecting portion and capable of evacuating an interior of the connecting portion. The driving unit includes (i) a rod serving as a driving shaft which drives the valve body in a direction to close the exhaust port or a direction to open the exhaust port, and (ii) a cylinder driving the rod, and the rod extends parallel to a moving direction of the valve body and supports the valve body at one end.Type: GrantFiled: March 13, 2009Date of Patent: November 13, 2012Assignee: Canon Anelva CorporationInventor: Yasuyuki Shirai