Patents by Inventor Tomoyuki Kanai
Tomoyuki Kanai 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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Publication number: 20220186089Abstract: Disclosed is the copolymer having a (meth)acrylic monomer unit A having an anionic group, a (meth)acrylic monomer unit B having a cationic group, and a (meth)acrylic monomer unit C other than the (meth)acrylic monomer unit A and the (meth)acrylic monomer unit B.Type: ApplicationFiled: April 7, 2020Publication date: June 16, 2022Applicant: Denka Company LimitedInventors: Ippei TAKASAKI, Kazuyuki IGARASHI, Tomoyuki KANAI, Yukihiko YAMASHITA
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Publication number: 20220148905Abstract: Provided is a back grinding adhesive sheet which can adequately protect protrusions provided to a semiconductor wafer, and with which back grinding can be adequately performed. The present invention provides a back grinding adhesive sheet for a semiconductor wafer having protrusions, the back grinding adhesive sheet comprising a non-adhesive cushion layer, and an adhesive layer provided on the cushion layer. The adhesive layer has an opening with a smaller diameter than the diameter of the semiconductor wafer, and the outer edge of the semiconductor wafer is adhered to the adhesive layer such that the protrusions on the semiconductor wafer are positioned inside the opening. The protrusions are protected by the cushion layer when the semiconductor wafer is in the state of being adhered to the adhesive layer. The adhesive sheet satisfies at least one of the following conditions (1)-(2).Type: ApplicationFiled: February 21, 2020Publication date: May 12, 2022Applicants: DISCO CORPORATION, DENKA COMPANY LIMITEDInventors: Karl Heinz Priewasser, Tomoya Tsukui, Tomoyuki Kanai, Takeshi Saito
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Publication number: 20220135848Abstract: Provided is an adhesive sheet for backgrinding which enables sufficient backgrinding while protecting protrusions provided on a semiconductor wafer. The present invention provides an adhesive sheet for the backgrinding of a semiconductor wafer that has protrusions, said adhesive sheet being characterized by comprising a non-adhesive cushion layer and an adhesive layer provided on the cushion layer, with a curable resin and a support film being layered on the cushion layer side for use, wherein the viscosity of the curable resin prior to curing is 100-3000 mPa·s, the Shore D hardness of the curable resin layer subsequent to curing is 5-72, and at least one of conditions (1) and (2) is satisfied. (1) When punched in the shape of a dumbbell in accordance with JIS Z1702 and stretched by 25% at a tensioning speed of 300 mm/min with a gauge length of 40 mm, the cushion layer has a tensile stress of 2-30 N/10 mm. (2) The cushion layer is composed of a thermoplastic resin that has a melting point of 60-110° C.Type: ApplicationFiled: February 21, 2020Publication date: May 5, 2022Applicants: DISCO CORPORATION, DENKA COMPANY LIMITEDInventors: Karl Heinz Priewasser, Tomoya Tsukui, Tomoyuki Kanai, Takeshi Saito
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Patent number: 9061485Abstract: Provided is a method for manufacturing a translucent rigid substrate laminate which can improve a thickness precision while decreasing the risk of fractures. In the method for manufacturing a translucent rigid substrate laminate according to the present invention, translucent rigid substrates are placed opposite to each other such that bonding surfaces thereof are parallel to each other, both rigid substrates are brought toward each other while being kept parallel, the both rigid substrates are preliminarily bonded using a photo-curable fixing agent, the bonded translucent rigid substrates are roll-pressed, and the fixing agent is then cured.Type: GrantFiled: June 1, 2011Date of Patent: June 23, 2015Assignee: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Hiroyuki Kurimura, Tomoyuki Kanai, Isamu Ichikawa, Gosuke Nakajima, Hayato Miyazaki, Yasunori Hayashi, Kenji Tanaka
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Patent number: 8859633Abstract: Provided are a temporal fixation method in processing of optical members and a resin composition suitable therefore, which uses a composition which is characterized by containing the following (A3), (B3) and (D3), wherein (A3) is a urethane(meth)acrylate; (B3) is one or more (meth)acrylic acid derivative monomers selected from the group consisting of n-(meth)acryloyloxyalkyl hexahydrophthalimides, carboxyl group-containing (meth)acrylates and (meth)acrylic acid derivative monomers represented by the formula (C3): Z—O—(R2O)p—R1??Formula (C3): wherein Z represents a (meth)acryloyl group, R1 represents a phenyl group or a phenyl group having an alkyl group with 1 to 3 carbon atoms, R2 represents —C2H4—, —C3H6—, —CH2CH(CH3)—, —CH2CH(OH)CH2—, —C4H8— or —C6H12—, and p represents an integer of from 1 to 10; and D(3) is a photopolymerization initiator, along with methods for temporarily fixing a member.Type: GrantFiled: July 7, 2011Date of Patent: October 14, 2014Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima
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Patent number: 8415425Abstract: Provided is a method for protecting the surface of a member to be processed, which comprises providing a protective film made of a photocurable resin composition for surface protection on the surface of the member to be processed, processing the member to be processed, and removing the protective film from the member to be processed, wherein the photocurable resin composition comprises (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a resin having a cyclopentadiene skeleton and (D) a photopolymerization initiator, which comprises from 1 to 50 parts by weight of (A), from 5 to 95 by mass of (B) and from 0.1 to 50 parts by mass of (C).Type: GrantFiled: March 30, 2012Date of Patent: April 9, 2013Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tomoyuki Kanai, Kazuhiro Oshima
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Publication number: 20130081752Abstract: Provided is a method for manufacturing a translucent rigid substrate laminate which can improve a thickness precision while decreasing the risk of fractures. In the method for manufacturing a translucent rigid substrate laminate according to the present invention, translucent rigid substrates are placed opposite to each other such that bonding surfaces thereof are parallel to each other, both rigid substrates are brought toward each other while being kept parallel, the both rigid substrates are preliminarily bonded using a photo-curable fixing agent, the bonded translucent rigid substrates are roll-pressed, and the fixing agent is then cured.Type: ApplicationFiled: June 1, 2011Publication date: April 4, 2013Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Hiroyuki Kurimura, Tomoyuki Kanai, Isamu Ichikawa, Gosuke Nakajima, Hayato Miyazaki, Yasunori Hayashi, Kenji Tanaka
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Patent number: 8338526Abstract: To provide an environmentally-friendly curable resin composition for surface protection, having a high adhesive strength and being capable of forming a protective film which will readily be removed in the film form without adhesive residue in water on a member to be processed, a photocurable adhesive using it, a method for temporarily fixing a member, and a method for removing a protective film. A curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, and (C) a resin having a cyclopentadiene skeleton. Further, a curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a resin having a cyclopentadiene skeleton, and (D) a photopolymerization initiator.Type: GrantFiled: July 12, 2011Date of Patent: December 25, 2012Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tomoyuki Kanai, Kazuhiro Oshima
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Patent number: 8313604Abstract: A method for temporarily fixing a member with a curable composition that includes (A) a polyfunctional (meth)acrylate, (B) phenol 2-mol ethylene oxide-modified acrylate, (C) a photopolymerization initiator, (D) a polar solvent, and (H) at least one granular material selected from the group consisting of polypropylene particles, crosslinked polymethyl methacrylate particles and crosslinked polystyrene particles.Type: GrantFiled: July 3, 2006Date of Patent: November 20, 2012Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Kazuhiro Oshima, Tomoyuki Kanai
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Publication number: 20120246913Abstract: Provided is a method for protecting the surface of a member to be processed, which comprises providing a protective film made of a photocurable resin composition for surface protection on the surface of the member to be processed, processing the member to be processed, and removing the protective film from the member to be processed, wherein the photocurable resin composition comprises (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a resin having a cyclopentadiene skeleton and (D) a photopolymerization initiator, which comprises from 1 to 50 parts by weight of (A), from 5 to 95 by mass of (B) and from 0.1 to 50 parts by mass of (C).Type: ApplicationFiled: March 30, 2012Publication date: October 4, 2012Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Tomoyuki KANAI, Kazuhiro OSHIMA
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Patent number: 8187411Abstract: Provided are a temporal fixation method in processing of optical members and a resin composition suitable therefor. The present invention provides a composition which is characterized by comprising (A1): a (meth)acrylate with a molecular weight of at least 500 having at least one (meth)acryloyl group at a terminal or in a side chain of a molecule, (B1): a polyfunctional (meth)acrylate, (C1): a (meth)acrylate other than (A1) and (B1), and (D1): a photopolymerization initiator. The invention also provides a method for temporarily fixing a member, characterized by comprising bonding a member to temporarily fix it with use of the composition, processing the temporarily fixed member, and immersing the processed member in warm water of at most 90° C., thereby removing a cured resin of the composition.Type: GrantFiled: June 9, 2005Date of Patent: May 29, 2012Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima
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Publication number: 20110265934Abstract: Provided are a temporal fixation method in processing of optical members and a resin composition suitable therefore, which uses a composition which is characterized by containing the following (A3), (B3) and (D3), wherein (A3) is a urethane (meth)acrylate; (B3) is one or more (meth)acrylic acid derivative monomers selected from the group consisting of n-(meth)acryloyloxyalkyl hexahydrophthalimides, carboxyl group-containing (meth)acrylates and (meth)acrylic acid derivative monomers represented by the formula (C3): Z—O—(R2O)p—R1 ??Formula (C3): wherein Z represents a (meth)acryloyl group, R1 represents a phenyl group or a phenyl group having an alkyl group with 1 to 3 carbon atoms, R2 represents —C2H4—, —C3H6—, —CH2CH(CH3)—, —CH2CH(OH)CH2—, —C4H8— or —C6H12—, and p represents an integer of from 1 to 10; and D(3) is a photopolymerization initiator, along with methods for temporarily fixing a member.Type: ApplicationFiled: July 7, 2011Publication date: November 3, 2011Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Kazuhiro OSHIMA, Tomoyuki KANAI, Kunio IRIUCHIJIMA
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Publication number: 20110269868Abstract: To provide an environmentally-friendly curable resin composition for surface protection, having a high adhesive strength and being capable of forming a protective film which will readily be removed in the film form without adhesive residue in water on a member to be processed, a photocurable adhesive using it, a method for temporarily fixing a member, and a method for removing a protective film. A curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, and (C) a resin having a cyclopentadiene skeleton. Further, a curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a resin having a cyclopentadiene skeleton, and (D) a photopolymerization initiator.Type: ApplicationFiled: July 12, 2011Publication date: November 3, 2011Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tomoyuki KANAI, Kazuhiro Oshima
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Patent number: 8048258Abstract: To provide a resin composition for e.g. a temporary fixing adhesive which has a high adhesive strength and which is readily removable in water, and a temporary fixing method for a member by means thereof. A resin composition comprising component (A): N,N-diethylacrylamide and/or N-isopropylacrylamide, component (B): at least one member selected from the group consisting of a homopolymer of N-vinyl-2-pyrrolidone, a homopolymer of N,N-dimethylacrylamide, a homopolymer of N,N-diethylacrylamide, a homopolymer of acryloylmorpholine, a homopolymer of N-isopropylacrylamide, and a copolymer of at least two monomers selected from the group consisting of N-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, N,N-diethylacrylamide, acryloylmorpholine and N-isopropylacrylamide, and component (C): a polymerization initiator. A temporary fixing method for a member and a surface protecting method for a member, by means the resin composition.Type: GrantFiled: May 24, 2007Date of Patent: November 1, 2011Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
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Patent number: 7988811Abstract: To provide a method for temporarily fixing an optical member suitable for processing of optical members, and an adhesive composition useful for such a method. An adhesive composition comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate and (C) a photopolymerization initiator, wherein the glass transition temperature of a cured resin obtained from the adhesive composition is from ?50° C. to 40° C. A method for temporary fixing a member, which comprises bonding and temporarily fixing the member by means of the above adhesive composition, processing the temporarily fixed member, and immersing the processed is member in warm water of at most 90° C., thereby to remove a cured resin of the adhesive composition from the member.Type: GrantFiled: June 28, 2007Date of Patent: August 2, 2011Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
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Publication number: 20100012263Abstract: To provide a method for temporarily fixing an optical member for processing, and a curable composition useful for such a method. A curable composition comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a photopolymerization initiator, and (D) a polar solvent. The curable composition may further contain (G) a temperature-responsive polymer and/or a copolymer of a temperature-responsive polymer, or (H) a granular material. The method for temporarily fixing a member, comprises temporarily fixing the member by means of such a curable composition, processing the temporarily fixed member, and immersing the processed member in warm water of from 30 to 90° C., thereby to remove a cured resin of the curable composition.Type: ApplicationFiled: July 3, 2006Publication date: January 21, 2010Inventors: Kazuhiro Oshima, Tomoyuki Kanai
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Publication number: 20100000670Abstract: To provide a method for temporarily fixing an optical member suitable for processing of optical members, and an adhesive composition useful for such a method. An adhesive composition comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate and (C) a photopolymerization initiator, wherein the glass transition temperature of a cured resin obtained from the adhesive composition is from ?50° C. to 40° C. A method for temporary fixing a member, which comprises bonding and temporarily fixing the member by means of the above adhesive composition, processing the temporarily fixed member, and immersing the processed is member in warm water of at most 90° C., thereby to remove a cured resin of the adhesive composition from the member.Type: ApplicationFiled: June 28, 2007Publication date: January 7, 2010Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
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Publication number: 20090196987Abstract: To provide a resin composition for e.g. a temporary fixing adhesive which has a high adhesive strength and which is readily removable in water, and a temporary fixing method for a member by means thereof. A resin composition comprising component (A): N,N-diethylacrylamide and/or N-isopropylacrylamide, component (B): at least one member selected from the group consisting of a homopolymer of N-vinyl-2-pyrrolidone, a homopolymer of N,N-dimethylacrylamide, a homopolymer of N,N-diethylacrylamide, a homopolymer of acryloylmorpholine, a homopolymer of N-isopropylacrylamide, and a copolymer of at least two monomers selected from the group consisting of N-vinyl-2-pyrrodidone, N,N-dimethylacrylamide, N,N-diethylacrylamide, acryloylmorpholine and N-isopropylacrylamide, and component (C): a polymerization initiator. A temporary fixing method for a member and a surface protecting method for a member, by means the resin composition.Type: ApplicationFiled: May 24, 2007Publication date: August 6, 2009Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
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Publication number: 20080289750Abstract: To provide an environmentally-friendly curable resin composition for surface protection, having a high adhesive strength and being capable of forming a protective film which will readily be removed in the film form without adhesive residue in water on a member to be processed, a photocurable adhesive using it, a method for temporarily fixing a member, and a method for removing a protective film. A curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, and (C) a resin having a cyclopentadiene skeleton. Further, a curable resin composition for surface protection, comprising (A) a polyfunctional (meth)acrylate, (B) a monofunctional (meth)acrylate, (C) a resin having a cyclopentadiene skeleton, and (D) a photopolymerization initiator.Type: ApplicationFiled: January 11, 2007Publication date: November 27, 2008Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Tomoyuki Kanai, Kazuhiro Oshima
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Publication number: 20080149270Abstract: Provided are a temporal fixation method in processing of optical members and a resin composition suitable therefor. The present invention provides a composition which is characterized by comprising (A1): a (meth)acrylate with a molecular weight of at least 500 having at least one (meth)acryloyl group at a terminal or in a side chain of a molecule, (B1): a polyfunctional (meth)acrylate, (C1): a (meth)acrylate other than (A1) and (B1), and (D1): a photopolymerization initiator. The invention also provides a method for temporarily fixing a member, characterized by comprising bonding a member to temporarily fix it with use of the composition, processing the temporarily fixed member, and immersing the processed member in warm water of at most 90° C., thereby removing a cured resin of the composition.Type: ApplicationFiled: June 9, 2005Publication date: June 26, 2008Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima