Patents by Inventor Kunio Goto
Kunio Goto 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).
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Patent number: 9321982Abstract: In a threaded joint for pipes constituted by a pin and a box, each having a contact surface comprising a threaded portion and an unthreaded metal contact portion, the contact surface of the pin has a solid corrosion protective, preferably transparent coating based on a UV-curable resin and the contact surface of the box has a solid lubricating coating having plastic or viscoplastic rheological behavior which is preferably formed by the hot melt technique from a composition comprising a thermoplastic polymer, a wax, a metal soap, a corrosion inhibitor, a water-insoluble liquid resin, and a solid lubricant.Type: GrantFiled: June 4, 2010Date of Patent: April 26, 2016Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC MANNESMANN OIL & GAS FRANCEInventors: Kunio Goto, Takayuki Kamimura, Masaru Takahashi, Keishi Matsumoto, Michihiko Iwamoto, Ryuichi Imai, Stéphanie Raï
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Patent number: 9169951Abstract: In order to provide a tubular threaded joint constituted by a pin and a box each having threads and an unthreaded metal contact portion with excellent galling resistance and gas tightness even in extremely cold environments at ?60° C. to ?20° C. and rust preventing properties without using a compound grease, a thermoplastic solid lubricating coating containing low friction copolymer particles made from an acrylic-silicone copolymer and preferably further containing a solid lubricant (e.g., graphite) in a thermoplastic polymer matrix (e.g., selected from polyolefin resins and ethylene-vinyl acetate copolymer resins) is formed on the surface of the threads and unthreaded metal contact portion of a pin and/or a box.Type: GrantFiled: November 4, 2011Date of Patent: October 27, 2015Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC MANNESMANN OIL & GAS FRANCEInventors: Kunio Goto, Masayoshi Sasaki
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Publication number: 20150210888Abstract: A composition for solid coating formation, includes a composition made by containing, in a mixed solvent including water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent. The powdery organic resin is present in a state of being dissolved or dispersed in the mixed solvent.Type: ApplicationFiled: September 10, 2013Publication date: July 30, 2015Applicants: VALLOUREC OIL AND GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventor: Kunio Goto
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Publication number: 20150191674Abstract: Provided is a composition for forming a lubricating coating to a tubular threaded joint. The composition contains a melamine cyanurate, a basic metal salt of an aromatic organic acid, and one or more kinds selected from the group consisting of a pine resin-based material, a wax, a metal soap, and a lubricating powder.Type: ApplicationFiled: July 31, 2013Publication date: July 9, 2015Applicants: VALLOUREC OIL AND GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kunio Goto, Yuuji Tanaka
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Publication number: 20150192229Abstract: A tubular threaded joint has a pin and a box. Each having a contact surface comprising a threaded portion and an unthreaded metal contact portion including a seal portion and a shoulder portion. A solid lubricating coating having a relatively high Knoop hardness is formed on a portion including the shoulder portion of the contact surface, such as the unthreaded metal contact portion including the shoulder portion and the seal portion, of at least one of the pin and the box. A solid lubricating coating having a relatively low Knoop hardness is formed at least on the remaining portion of the contact surface, such as the threaded portion. The threaded joint has excellent galling resistance, gas tightness, and rust preventing properties. The joint does not readily undergo yielding of shoulder portions even when made up with a high torque, thereby making it possible to perform makeup in a stable manner.Type: ApplicationFiled: May 21, 2013Publication date: July 9, 2015Applicant: VALLOUREC OIL AND GAS FRANCEInventor: Kunio Goto
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Publication number: 20150130182Abstract: A threaded joint for a steel pipe includes a pin and a box each of which is provided with a contact surface that includes an unthreaded metal contact portion having a seal portion and a threaded portion. This threaded joint includes an ultraviolet ray-curable resin coating film that is formed on the contact surface of at least one of the pin and the box; and an acrylic silicone resin coating film that is formed on at least a portion of a surface of the ultraviolet ray-curable resin coating film.Type: ApplicationFiled: June 4, 2013Publication date: May 14, 2015Inventors: Masayoshi Sasaki, Katsutoshi Sumitani, Kunio Goto
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Patent number: 8991870Abstract: A lubricating coating which can prevent the occurrence of galling even when makeup is carried out with a high torque and which has excellent rust preventing properties is formed on the contact surfaces of a pin and/or a box of a tubular threaded joint. The lubricating coating contains copolymer particles made from particles of an acrylic-silicone copolymer with an average particle diameter of 10-50 ?m dispersed in a highly viscous matrix made from a mixture of a rosin-based substance selected from rosin and its derivatives, wax, a metal soap, and a basic metal salt of an aromatic organic acid (such as highly basic Ca sulfonate).Type: GrantFiled: November 4, 2011Date of Patent: March 31, 2015Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Oil and Gas FranceInventors: Kunio Goto, Yasuhiro Yamamoto
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Patent number: 8857857Abstract: A threaded joint for steel pipes having excellent galling resistance, rust preventing properties, and airtightness without using a compound grease comprises a pin and a box each having a threaded portion and an unthreaded metal-to-metal contact portion serving as contact surfaces. The contact surfaces of at least one of the pin and the box are coated with a multi-layered structure comprising, from the bottom, a first layer formed from a first metal or alloy, a second layer formed from a second metal or alloy which is softer than the first metal or alloy, and an uppermost layer of a solid lubricating coating comprising a lubricating powder in an organic or inorganic binder.Type: GrantFiled: March 13, 2009Date of Patent: October 14, 2014Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Oil and Gas FranceInventors: Kunio Goto, Shigeo Nagasaku, Shigeo Onishi, Hiroaki Ikegami
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Publication number: 20140284919Abstract: A tubular threaded joint is constituted by a pin and a box each having a contact surface comprising an unthreaded metal contact portion including a seal portion and a shoulder portion and a threaded portion. Of the contact surface of at least one of the pin and the box, the surfaces of the seal portion and the shoulder portion has a first lubricating coating in the form of a solid lubricating coating, and the surface of the threaded portion or the entire surface of the contact surface has a second lubricating coating selected from a viscous liquid lubricating coating and a solid lubricating coating. The first lubricating coating has a coefficient of friction which is higher than that of the second lubricating coating, and the second lubricating coating is positioned on top in a portion where both the first lubricating coating and the second lubricating coating are present.Type: ApplicationFiled: November 16, 2012Publication date: September 25, 2014Applicant: VALLOUREC OIL AND GAS FRANCEInventors: Kunio Goto, Yuji Tanaka, Yasuhiro Yamamoto
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Patent number: 8741406Abstract: A threaded joint for steel pipes for use in an oil well which has improved galling resistance and which is protected from rusting comprises a pin and a box each having a contact surface including a threaded portion and an unthreaded metal contact portion. The contact surface of at least one of the pin and the box has a lower layer of a viscous liquid or semisolid lubricating coating comprising at least wax and a fatty acid alkaline earth metal salt and not containing a harmful heavy metal such as lead and an upper layer of a dry solid coating formed from an aqueous resin coating composition, an organic solvent type coating composition, or an ultraviolet curing coating composition.Type: GrantFiled: March 17, 2011Date of Patent: June 3, 2014Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Mannesmann Oil & Gas FranceInventors: Kunio Goto, Ryuichi Imai
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Patent number: 8735334Abstract: A film-forming lubrication composition for make-up of threaded connections, intended to cover at least one threading (FE, FI) and a make-up abutment (BVM, BVF) of a threaded element (EM, EF) of a component (T2, T1) of a threaded tubular connection (JF) with a solid state film which adheres to the threading (FE, FI) and to said make-up abutment (BVM, BVF), said make-up abutment (BVM, BVF) being intended to bear against another abutment (BVF, BVM) of another component (T1, T2) of said threaded tubular connection (JF) during the terminal make-up phase, and said lubrication composition comprising a matrix. The matrix further comprises at least one rheoresistant material selected so as to endow said composition, as a complement to lubrication, with a shouldering torque which is at least equal to a threshold value.Type: GrantFiled: October 5, 2009Date of Patent: May 27, 2014Assignees: Vallourec Oil and Gas France, Sumitomo Metal Industries, Ltd.Inventors: Eliette Pinel, Eric Gard, Kunio Goto
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Patent number: 8586644Abstract: A thin and highly transparent coating having excellent air tightness, adhesion to a substrate, lubricating properties, galling resistance, and corrosion resistance is formed on the surface of a metal substrate and particularly on the surface of a threaded joint which is used for connection of oil country tubular goods. A photocurable composition comprising (A) a photocurable (meth)acrylate resin, (B) a (meth)acrylate monomer selected from a monofunctional (meth)acrylate monomer and a difunctional (meth)acrylate monomer, (C) a trifunctional or higher multifunctional (meth)acrylate monomer, (D) a photopolymerization initiator, (E) a benzotriazole anticorrosive agent, (F) an anticorrosive pigment selected from a phosphate anticorrosive pigment and calcium ion-exchanged silica, and (G) a phosphate ester is used to form a photocured coating.Type: GrantFiled: November 14, 2011Date of Patent: November 19, 2013Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Mannesmann Oil & Gas France, Chugoku Marine Paints, Ltd.Inventors: Tomomitsu Nagareo, Yoshinori Kameda, Keishi Matsumoto, Takayuki Kamimura, Masaru Takahashi, Kunio Goto, Ryuichi Imai
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Publication number: 20130277961Abstract: In order to provide a tubular threaded joint constituted by a pin and a box each having threads and an unthreaded metal contact portion with excellent galling resistance and gas tightness even in extremely cold environments at ?60° C. to ?20° C. and rust preventing properties without using a compound grease, a thermoplastic solid lubricating coating containing low friction copolymer particles made from an acrylic-silicone copolymer and preferably further containing a solid lubricant (e.g., graphite) in a thermoplastic polymer matrix (e.g., selected from polyolefin resins and ethylene-vinyl acetate copolymer resins) is formed on the surface of the threads and unthreaded metal contact portion of a pin and/or a box.Type: ApplicationFiled: November 4, 2011Publication date: October 24, 2013Applicants: VALLOUREC MANNESMANN OIL & GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kunio Goto, Masayoshi Sasaki
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Publication number: 20130276294Abstract: A lubricating coating which can prevent the occurrence of galling even when makeup is carried out with a high torque and which has excellent rust preventing properties is formed on the contact surfaces of a pin and/or a box of a tubular threaded joint. The lubricating coating contains copolymer particles made from particles of an acrylic-silicone copolymer with an average particle diameter of 10-50 ?m dispersed in a highly viscous matrix made from a mixture of a rosin-based substance selected from rosin and its derivatives, wax, a metal soap, and a basic metal salt of an aromatic organic acid (such as highly basic Ca sulfonate).Type: ApplicationFiled: November 4, 2011Publication date: October 24, 2013Applicants: VALLOUREC MANNESMANN OIL & GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kunio Goto, Yasuhiro Yamamoto
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Patent number: 8557750Abstract: A solid lubricating coating formed on a contact surface of a threaded joint for pipes has a matrix of a lubricating oil-containing polymer. The lubricating oil-containing polymer has either a uniform composition or a gradient composition in which the concentration of lubricating oil decreases towards the contact surface and in which there is substantially no lubricating oil in the vicinity of the contact surface.Type: GrantFiled: September 26, 2011Date of Patent: October 15, 2013Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Mannesmann Oil & Gas FranceInventors: Takao Kuranishi, Kunio Goto, Keishi Matsumoto
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Patent number: 8508583Abstract: A three-dimensional video image projecting device and projecting method uses video image projectors to project a three-dimensional video image on a cylindrical screen face which can be three-dimensionally viewed through three-dimensional glasses having a first polarizing filter and a second polarizing filter arranged thereon. A plurality of video image projectors are disposed to be opposed to respective regions of the screen face, and the video image projectors produce a continuous, three-dimensional video image in a circumferential direction, by projecting, from the video image projectors, three-dimensional video images, each of which has an angle of 30 degrees or less in a circumferential direction of the screen face, arranged along the circumferential direction of the screen face.Type: GrantFiled: September 24, 2009Date of Patent: August 13, 2013Assignee: PBsystems, Inc.Inventor: Kunio Goto
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Patent number: 8420581Abstract: A lubricating coating which is free from harmful heavy metals is formed on a premium threaded joint for pipes constituted by a pin and a box each having a contact surface comprising a threaded portion and an unthreaded metal contact portion (a sealing surface and shoulder) in order to provide the joint with galling resistance, gas-tightness, and anticorrosive properties such that the unthreaded metal contact portion is prevented from yielding even when the joint is made up with a high torque. The lubricating coating comprises one or both of a rosin and calcium fluoride; metal soap; wax; and a basic metal salt of an aromatic organic acid, and preferably it further includes a lubricating powder, magnesium carbonate, and/or a carbohydrate, particularly a cyclodextrin.Type: GrantFiled: April 30, 2010Date of Patent: April 16, 2013Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Mannesmann Oil & Gas FranceInventors: Kunio Goto, Ryuichi Imai, Shigeki Fukumoto, Yasuhiro Yamamoto
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Patent number: 8409718Abstract: A threaded joint for steel pipes for use in an oil well which has galling resistance and which is protected from rusting comprises a pin and a box each having a contact surface including a threaded portion and an unthreaded metal contact portion. The contact surface of at least one of the pin and the box has a lower layer of a viscous liquid or semisolid lubricating coating comprising at least wax and a fatty acid alkaline earth metal salt and not containing a harmful heavy metal such as lead and an upper layer of a dry solid coating formed from an aqueous resin coating composition, an organic solvent type coating composition, or an ultraviolet curing coating composition.Type: GrantFiled: October 15, 2010Date of Patent: April 2, 2013Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Mannesmann Oil & Gas GranceInventors: Kunio Goto, Ryuichi Imai
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Patent number: 8333847Abstract: A chemical conversion treatment liquid which can stably form a phosphate-type chemical conversion film on a steel material for a joint portion of an oil well steel pipe containing 0.5-13% Cr is developed. Using a chemical conversion treatment liquid to which a prescribed amount of potassium is added, a chemical conversion film containing a prescribed amount of potassium compounds and having a prescribed thickness can be formed on the threaded surface of a joint portion of an oil well steel pipe.Type: GrantFiled: March 3, 2011Date of Patent: December 18, 2012Assignee: Sumitomo Metal Industries, Ltd.Inventors: Masaru Izawa, Kunio Goto
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Patent number: 8276946Abstract: A threaded joint for steel tubes has a contact surface (30) including a threaded portion and a non-threaded metal-to-metal contact portion. The contact surface of at least one of a pin and a box of the joint is coated with a first plating layer (34) made of a Cu—Zn alloy or a Cu—Zn-M1 alloy (wherein M1 is at least one element selected from Sn, Bi, and In). An undercoat (32) of one or both of a Ni plating layer (32a) and a Cu plating layer (32b) and an overcoat of a Sn-M2 alloy plating layer (36) (wherein M2 is one or more elements selected from Bi, In, Ni, Zn, and Cu) may be formed below and above the first layer, respectively. A solid lubricating coating (38a) and a viscous liquid or semisolid lubricating coating (38b) may also be formed atop the plating layer as a lubricating coating (38).Type: GrantFiled: September 1, 2009Date of Patent: October 2, 2012Assignees: Sumitomo Metal Industries, Ltd., Vallourec Mannesmann Oil & Gas FranceInventors: Masanari Kimoto, Kunio Goto, Masaru Takahashi, Kunihiro Fukui, Shigeo Nagasaku, Ryuichi Imai, Shigeo Onishi, Hiroaki Ikegami