Patents by Inventor Keiichi Hatakeyama

Keiichi Hatakeyama 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: 20110187006
    Abstract: Disclosed is an adhesive composition which includes (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally includes (d) a filler and/or (e) a curing accelerator. Also disclosed are a process for producing an adhesive composition, including mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film including the above-mentioned adhesive composition formed into a film; a substrate for mounting a semiconductor including a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which includes the above-mentioned adhesive film or the substrate for mounting a semiconductor.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 4, 2011
    Inventors: Teiichi INADA, Keiji SUMIYA, Takeo TOMIYAMA, Tetsurou IWAKURA, Hiroyuki KAWAKAMI, Masao SUZUKI, Takayuki MATSUZAKI, Youichi HOSOKAWA, Keiichi HATAKEYAMA, Yasushi SHIMADA, Yuuko TANAKA, Hiroyuki KURIYA
  • Patent number: 7947779
    Abstract: Disclosed is an adhesive composition which includes (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally includes (d) a filler and/or (e) a curing accelerator. Also disclosed are a process for producing an adhesive composition, including mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film including the above-mentioned adhesive composition formed into a film; a substrate for mounting a semiconductor including a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which includes the above-mentioned adhesive film or the substrate for mounting a semiconductor.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: May 24, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Teiichi Inada, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya
  • Publication number: 20110057145
    Abstract: There is provided a method for preparing dendrimer-modified magnetic fine particles wherein such particles can be made within a shorter time and more inexpensively than in the above-stated prior art processes and lot-to-lot variations in properties are lessened. The method for preparing dendrimer-fixed magnetic fine particles comprises the steps of providing magnetic particles having a functional group at a surface thereof, providing a dendrimer having a functional group at a base end portion thereof and synthesized to a desired generation and binding the functional group of the magnetic particles and the functional group of the dendrimer directly or indirectly through a crosslinking agent.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 10, 2011
    Applicants: TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, YOKOGAWA ELECTRIC CORPORATION
    Inventors: Tadashi Matsunaga, Tsuyoshi Tanaka, Keiichi Hatakeyama, Takeo Tanaami, Hitoshi Wake, Tomoyuki Taguchi, Takeyuki Mogi
  • Publication number: 20110060136
    Abstract: Dendrimer-coated magnetic fine particles comprise magnetic fine particles, a lipid bilayer covering a surface of individual magnetic fine particles, and a dendrimer bound to an outer layer of the lipid bilayer. With the dendrimer-coated magnetic fine particles, the dendrimer is positively charged are brought into contact with a nucleic acid-containing solution to adsorb the nucleic acid on the dendrimer, while the nucleic acid-adsorbed fine particles are collected by magnetic force to recover the nucleic acid from the solution.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 10, 2011
    Applicants: TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, YOKOGAWA ELECTRIC CORPORATION
    Inventors: Tadashi MATSUNAGA, Tsuyoshi TANAKA, Keiichi HATAKEYAMA, Takeo TANAAMI, Hitoshi WAKE, Tomoyuki TAGUCHI, Takeyuki MOGI
  • Publication number: 20110021005
    Abstract: Disclosed is an adhesive composition which includes (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally includes (d) a filler and/or (e) a curing accelerator. Also disclosed are a process for producing an adhesive composition, including mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film including the above-mentioned adhesive composition formed into a film; a substrate for mounting a semiconductor including a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which includes the above-mentioned adhesive film or the substrate for mounting a semiconductor.
    Type: Application
    Filed: October 7, 2010
    Publication date: January 27, 2011
    Inventors: Teiichi INADA, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya
  • Publication number: 20100311227
    Abstract: The method for producing a semiconductor chip with an adhesive film of the present invention comprises steps of preparing a laminate in which at least a divided semiconductor wafer comprising a plurality of semiconductor chips, obtained by forming a cut which separates the semiconductor wafer into a plurality of semiconductor chips on one side of the semiconductor wafer in a thickness less than that of the semiconductor wafer and by grinding the other side of the semiconductor wafer on which no cut is formed to reach the cut, an adhesive film for a semiconductor and a dicing tape are laminated, the adhesive film for a semiconductor having a thickness in the range of 1 to 15 ?m and a tensile elongation at break of less than 5%, and the tensile elongation at break being less than 110% of the elongation at a maximum load; and dividing the adhesive film for a semiconductor by picking up the plurality of semiconductor chips in a laminating direction of the laminate, thereby preparing a semiconductor chip with an a
    Type: Application
    Filed: October 7, 2008
    Publication date: December 9, 2010
    Inventors: Keiichi Hatakeyama, Yuuki Nakamura
  • Publication number: 20100267199
    Abstract: The method for producing a semiconductor chip with an adhesive film of the present invention comprises steps of: preparing a laminate in which a semiconductor wafer, an adhesive film for a semiconductor and a dicing tape are laminated in that order, the adhesive film for a semiconductor having a thickness in the range of 1 to 15 ?m and a tensile elongation at break of less than 5%, and the tensile elongation at break being less than 110% of the elongation at a maximum load, and the semiconductor wafer having a reformed section for dividing the semiconductor wafer into the plurality of semiconductor chips, which is formed by irradiating with laser light; dividing the semiconductor wafer into the plurality of semiconductor chips without dividing the adhesive film for a semiconductor by expanding the dicing tape in a direction in which the plurality of semiconductor chips are each separated; and dividing the adhesive film for a semiconductor by picking up the plurality of semiconductor chips in a laminating dire
    Type: Application
    Filed: October 7, 2008
    Publication date: October 21, 2010
    Inventors: Keiichi Hatakeyama, Yuuki Nakamura
  • Publication number: 20100120229
    Abstract: There is provided a method that allows semiconductor chips to be obtained from a semiconductor wafer at high yield, while sufficiently inhibiting generation of chip cracks and burrs. The method for manufacturing a semiconductor chip comprises a step of preparing a laminated body having a semiconductor wafer, an adhesive film for a semiconductor and dicing tape laminated in that order, the semiconductor wafer being partitioned into multiple semiconductor chips and notches being formed from the semiconductor wafer side so that at least a portion of the adhesive film for a semiconductor remains uncut in its thickness direction, and a step of stretching out the dicing tape in a direction so that the multiple semiconductor chips are separated apart, to separate the adhesive film for a semiconductor along the notches. The adhesive film for a semiconductor has a tensile breaking elongation of less than 5% and the tensile breaking elongation of less than 110% of the elongation at maximum load.
    Type: Application
    Filed: March 31, 2008
    Publication date: May 13, 2010
    Inventors: Yuuki Nakamura, Tsutomu Kitakatsu, Youji Katayama, Keiichi Hatakeyama
  • Publication number: 20100112783
    Abstract: There is provided an adhesive film for a semiconductor, which can be attached to a semiconductor wafer at low temperature and which allows semiconductor chips to be obtained at high yield from the semiconductor wafer while sufficiently inhibiting generation of chip cracks and burrs. The adhesive film for a semiconductor comprises a polyimide resin that can be obtained by reaction between a tetracarboxylic dianhydride containing 4,4?-oxydiphthalic dianhydride represented by chemical formula (I) below and a diamine containing a siloxanediamine represented by the following general formula (II) below, and that can be attached to a semiconductor wafer at 100° C. or below.
    Type: Application
    Filed: March 31, 2008
    Publication date: May 6, 2010
    Inventors: Yuuki Nakamura, Tsutomu Kitakatsu, Youji Katayama, Keiichi Hatakeyama
  • Publication number: 20100003771
    Abstract: To provide a method of manufacturing semiconductor devices, the method being capable of efficiently obtaining a singulated semiconductor chip upon which an adhesive is adhered and also capable of excellently bonding a semiconductor chip to a wiring substrate, and provide an adhesive film. A layered product 60 in which a dicing tape 9, an adhesive layer 3, and a semiconductor wafer 6 are stacked in this order so that a circuit surface 6a of the semiconductor wafer 6 may face the dicing tape 9 side. A cutting position is recognized by recognizing a circuit pattern P in the circuit surface 6a from a rear surface 6b of the semiconductor wafer 6. At least the semiconductor wafer 6 and the adhesive layer 3 are cut in the thickness direction of the layered product 60. The dicing tape 9 is cured to peel off the dicing tape 9 and the adhesive layer 3. A projection electrode 4 of a semiconductor chip 26 is aligned with a wiring 12 of a wiring substrate 40.
    Type: Application
    Filed: June 20, 2007
    Publication date: January 7, 2010
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Akira Nagai, Masaaki Yasuda, Keiichi Hatakeyama, Tetsuya Enomoto
  • Publication number: 20090186955
    Abstract: The present invention provides an adhesive composition which comprises (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally comprises (d) a filler and/or (e) a curing accelerator; a process for producing an adhesive composition, comprising: mixing (a) the epoxy resin and (b) the curing agent with (d) the fillers followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film comprising the above-mentioned adhesive composition formed into a film; a substrate for mounting semiconductor comprising a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which comprises the above-mentioned adhesive film or the substrate for mounting semiconductor.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 23, 2009
    Inventors: Teiichi INADA, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya
  • Patent number: 7517724
    Abstract: The present invention provides a dicing/die bonding sheet which can be used as a dicing tape during dicing, enables ready separation of the semiconductor element and the adhesive layer from the pressure-sensitive adhesive layer during pickup, and in which the adhesive layer has satisfactory adhesiveness as a die bonding material. A dicing/die bonding sheet in which the pressure-sensitive adhesive layer comprises a compound (A), containing intramolecular, radiation curable carbon-carbon double bonds with an iodine value of 0.5 to 20, and at least one compound (B) selected from a group consisting of polyisocyanates, melamine-formaldehyde resins, and epoxy resins, and the adhesive layer comprises an epoxy resin (a), a phenolic resin (b) with a hydroxyl equivalent of at least 150 g/eq., an epoxy group-containing acrylic copolymer (c), comprising from 0.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: April 14, 2009
    Assignees: Hitachi Chemical Company, Ltd., Furukawa Electric Co., Ltd.
    Inventors: Keiichi Hatakeyama, Michio Uruno, Takayuki Matsuzaki, Yasumasa Morishima, Kenji Kita, Shinichi Ishiwata
  • Publication number: 20070098995
    Abstract: An object of the present invention is to provide a die-adhering adhesive film which can be laminated on a back of a wafer at a temperature lower than a softening temperature of a protecting tape for an ultra-thin wafer, or a dicing tape to be laminated, can reduce a thermal stress such as warpage of a wafer, can simplify a step of manufacturing a semiconductor device, and is excellent in heat resistance and humidity resistance reliance, an adhesive sheet in which the adhesive film and a dicing tape are laminated, as well as a semiconductor device.
    Type: Application
    Filed: June 10, 2004
    Publication date: May 3, 2007
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Takashi Masuko, Keisuke Ookubo, Keiichi Hatakeyama, Masami Yusa
  • Publication number: 20070036971
    Abstract: The present invention provides an adhesive composition which comprises (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally comprises (d) a filler and/or (e) a curing accelerator; a process for producing an adhesive composition, comprising: mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film comprising the above-mentioned adhesive composition formed into a film; a substrate for mounting semiconductor comprising a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which comprises the above-mentioned adhesive film or the substrate for mounting semiconductor.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 15, 2007
    Inventors: Teiichi Inada, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya
  • Publication number: 20070026572
    Abstract: The present invention provides a dicing/die bonding sheet which can be used as a dicing tape during dicing, enables ready separation of the semiconductor element and the adhesive layer from the pressure-sensitive adhesive layer during pickup, and in which the adhesive layer has satisfactory adhesiveness as a die bonding material. A dicing/die bonding sheet in which the pressure-sensitive adhesive layer comprises a compound (A), containing intramolecular, radiation curable carbon-carbon double bonds with an iodine value of 0.5 to 20, and at least one compound (B) selected from a group consisting of polyisocyanates, melamine-formaldehyde resins, and epoxy resins, and the adhesive layer comprises an epoxy resin (a), a phenolic resin (b) with a hydroxyl equivalent of at least 150 g/eq., an epoxy group-containing acrylic copolymer (c), comprising from 0.
    Type: Application
    Filed: March 15, 2005
    Publication date: February 1, 2007
    Inventors: Keiichi Hatakeyama, Michio Uruno, Takayuki Matsuzaki, Yasumasa Morishima, Kenji Kita, Shunichi Ishiwata
  • Patent number: 7070670
    Abstract: There are disclosed an adhesive composition comprising: (a) an epoxy resin, (b) a curing agent and (c) a polymer compound with a weight average molecular weight of 100,000 or more, wherein a ratio of A/B exceeds 1 and is 10 or less, where A represents the total weight of (a) the epoxy resin and (b) the curing agent and B represents a weight of (c) the polymer compound; an adhesive composition, whose compositions are separated into a sea phase and an island phase, when viewed at a section in a cured state, and a ratio X/Y is in a range of 0.1 to 1.0, where X is an area of the sea phase and Y is an area of the island phase; a process for producing said adhesive composition; an adhesive film wherein said adhesive composition is formed into a film form; an adhesive film for bonding a semiconductor chip and a wiring board for mounting a semiconductor or for bonding semiconductor chips themselves, wherein the adhesive film can perform bonding by heat-pressing with a pressure of 0.01 to 0.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: July 4, 2006
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Takeo Tomiyama, Teiichi Inada, Masaaki Yasuda, Keiichi Hatakeyama, Yuuji Hasegawa, Masaya Nishiyama, Takayuki Matsuzaki, Michio Uruno, Masao Suzuki, Tetsurou Iwakura, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya, Keiji Sumiya
  • Publication number: 20060106166
    Abstract: The present invention provides an adhesive composition which comprises (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally comprises (d) a filler and/or (e) a curing accelerator; a process for producing an adhesive composition, comprising: mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film comprising the above-mentioned adhesive composition formed into a film; a substrate for mounting semiconductor comprising a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which comprises the above-mentioned adhesive film or the substrate for mounting semiconductor.
    Type: Application
    Filed: December 28, 2005
    Publication date: May 18, 2006
    Inventors: Teiichi Inada, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka
  • Publication number: 20060100315
    Abstract: The present invention provides an adhesive composition which comprises (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally comprises (d) a filler and/or (e) a curing accelerator; a process for producing an adhesive composition, comprising: mixing (a) the epoxy resin and (b) the curing agent with (d) the filler, followed by mixing the resultant mixture with (c) the polymer compound incompatible with the epoxy resin; an adhesive film comprising the above-mentioned adhesive composition formed into a film; a substrate for mounting semiconductor comprising a wiring board and the above-mentioned adhesive film disposed thereon on its side where chips are to be mounted; and a semiconductor device which comprises the above-mentioned adhesive film or the substrate for mounting semiconductor.
    Type: Application
    Filed: December 28, 2005
    Publication date: May 11, 2006
    Inventors: Teiichi Inada, Keiji Sumiya, Takeo Tomiyama, Tetsurou Iwakura, Hiroyuki Kawakami, Masao Suzuki, Takayuki Matsuzaki, Youichi Hosokawa, Keiichi Hatakeyama, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya
  • Publication number: 20030159773
    Abstract: There are disclosed an adhesive composition comprising: (a) an epoxy resin, (b) a curing agent and (c) a polymer compound with a weight average molecular weight of 100,000 or more, wherein a ratio of A/B exceeds 1 and is 10 or less, where A represents the total weight of (a) the epoxy resin and (b) the curing agent and B represents a weight of (c) the polymer compound; an adhesive composition, whose compositions are separated into a sea phase and an island phase, when viewed at a section in a cured state, and a ratio X/Y is in a range of 0.1 to 1.0, where X is an area of the sea phase and Y is an area of the island phase; a process for producing said adhesive composition; an adhesive film wherein said adhesive composition is formed into a film form; an adhesive film for bonding a semiconductor chip and a wiring board for mounting a semiconductor or for bonding semiconductor chips themselves, wherein the adhesive film can perform bonding by heat-pressing with a pressure of 0.01 to 0.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Inventors: Takeo Tomiyama, Teiichi Inada, Masaaki Yasuda, Keiichi Hatakeyama, Yuuji Hasegawa, Masaya Nishiyama, Takayuki Matsuzaki, Michio Uruno, Masao Suzuki, Tetsurou Iwakura, Yasushi Shimada, Yuuko Tanaka, Hiroyuki Kuriya, Keiji Sumiya
  • Patent number: 6602132
    Abstract: A game system includes: a display device for displaying pictures; an input device for receiving input by a game-player and outputting a signal corresponding to the input; and a control device for controlling progress of a fishing game with referring to the signal outputted by the input device and displaying pictures corresponding to the progress of the game on the display device.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: August 5, 2003
    Assignee: Konami Corporation
    Inventors: Akira Kozawa, Kengo Suzuki, Seiji Akimoto, Keiichi Hatakeyama, Yasuhiro Masuoka, Akihiro Shimizu, Sadaharu Kawamura, Akio Sakamoto