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).

  • Publication number: 20220186089
    Abstract: 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: Application
    Filed: April 7, 2020
    Publication date: June 16, 2022
    Applicant: Denka Company Limited
    Inventors: Ippei TAKASAKI, Kazuyuki IGARASHI, Tomoyuki KANAI, Yukihiko YAMASHITA
  • Publication number: 20220148905
    Abstract: 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: Application
    Filed: February 21, 2020
    Publication date: May 12, 2022
    Applicants: DISCO CORPORATION, DENKA COMPANY LIMITED
    Inventors: Karl Heinz Priewasser, Tomoya Tsukui, Tomoyuki Kanai, Takeshi Saito
  • Publication number: 20220135848
    Abstract: 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: Application
    Filed: February 21, 2020
    Publication date: May 5, 2022
    Applicants: DISCO CORPORATION, DENKA COMPANY LIMITED
    Inventors: Karl Heinz Priewasser, Tomoya Tsukui, Tomoyuki Kanai, Takeshi Saito
  • Patent number: 9061485
    Abstract: 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: Grant
    Filed: June 1, 2011
    Date of Patent: June 23, 2015
    Assignee: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Isamu Ichikawa, Gosuke Nakajima, Hayato Miyazaki, Yasunori Hayashi, Kenji Tanaka
  • Patent number: 8859633
    Abstract: 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: Grant
    Filed: July 7, 2011
    Date of Patent: October 14, 2014
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima
  • Patent number: 8415425
    Abstract: 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: Grant
    Filed: March 30, 2012
    Date of Patent: April 9, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kanai, Kazuhiro Oshima
  • Publication number: 20130081752
    Abstract: 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: Application
    Filed: June 1, 2011
    Publication date: April 4, 2013
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Isamu Ichikawa, Gosuke Nakajima, Hayato Miyazaki, Yasunori Hayashi, Kenji Tanaka
  • Patent number: 8338526
    Abstract: 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: Grant
    Filed: July 12, 2011
    Date of Patent: December 25, 2012
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kanai, Kazuhiro Oshima
  • Patent number: 8313604
    Abstract: 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: Grant
    Filed: July 3, 2006
    Date of Patent: November 20, 2012
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Oshima, Tomoyuki Kanai
  • Publication number: 20120246913
    Abstract: 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: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Tomoyuki KANAI, Kazuhiro OSHIMA
  • Patent number: 8187411
    Abstract: 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: Grant
    Filed: June 9, 2005
    Date of Patent: May 29, 2012
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima
  • Publication number: 20110265934
    Abstract: 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: Application
    Filed: July 7, 2011
    Publication date: November 3, 2011
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Kazuhiro OSHIMA, Tomoyuki KANAI, Kunio IRIUCHIJIMA
  • Publication number: 20110269868
    Abstract: 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: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki KANAI, Kazuhiro Oshima
  • Patent number: 8048258
    Abstract: 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: Grant
    Filed: May 24, 2007
    Date of Patent: November 1, 2011
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
  • Patent number: 7988811
    Abstract: 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: Grant
    Filed: June 28, 2007
    Date of Patent: August 2, 2011
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
  • Publication number: 20100012263
    Abstract: 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: Application
    Filed: July 3, 2006
    Publication date: January 21, 2010
    Inventors: Kazuhiro Oshima, Tomoyuki Kanai
  • Publication number: 20100000670
    Abstract: 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: Application
    Filed: June 28, 2007
    Publication date: January 7, 2010
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
  • Publication number: 20090196987
    Abstract: 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: Application
    Filed: May 24, 2007
    Publication date: August 6, 2009
    Inventors: Hiroyuki Kurimura, Tomoyuki Kanai, Kazuhiro Oshima
  • Publication number: 20080289750
    Abstract: 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: Application
    Filed: January 11, 2007
    Publication date: November 27, 2008
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Tomoyuki Kanai, Kazuhiro Oshima
  • Publication number: 20080149270
    Abstract: 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: Application
    Filed: June 9, 2005
    Publication date: June 26, 2008
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Oshima, Tomoyuki Kanai, Kunio Iriuchijima