Patents by Inventor Ryo Mikuma

Ryo Mikuma 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: 20210007447
    Abstract: A slide fastener includes a resin sheet that joins tapes on one surface among both surfaces of the tapes in a thickness direction, and that extends from a stop on a side opposite to element rows and is integral with the stop. The stop includes recesses on a boundary portion with the sheet of left and right side portions that respectively correspond to the tapes, and includes a recess region in a surface of the stop that is a region whose range in a left-right direction is defined by leftmost and rightmost ones of the recesses. A surface of the sheet includes a flat portion that is a region extending from the recess region toward the side opposite to the element rows.
    Type: Application
    Filed: March 19, 2018
    Publication date: January 14, 2021
    Inventors: Masanori Kayahara, Mineto Terada, Ryo Mikuma, Kazuya Taniguchi, Yuki Sakagami
  • Publication number: 20200037711
    Abstract: The waterproof slide fastener includes a slider and a slider stopper member. A flange portion of the slider includes a linear portion extending linearly from a rear mouth and a curved portion extending to curve outward from an end part of the linear portion. The slider stopper member includes an insertion base portion disposed across right and left waterproof tapes, right and left insertion leg portions extending from the insertion base portion toward element rows, and flange press contact portions disposed on outer side surfaces of the respective insertion leg portions, wherein the flange press contact portion includes a press contact curved portion and a press contact straight portion extending linearly from a rear end part of the press contact curved portion. Thereby, even when the slider is held at a sliding limit vicinity position away from a sliding limit position, watertightness can be exerted.
    Type: Application
    Filed: October 11, 2016
    Publication date: February 6, 2020
    Inventors: Masanori Kayahara, Mineto Terada, Ryo Mikuma, Kazuya Taniguchi, Yuki Sakagami
  • Patent number: 9661902
    Abstract: A waterproof slide fastener with waterproof property in which covering the whole front and rear faces of a woven or knitted fastener tape with an elastomer, and fastener elements made of a thermoplastic resin are injection molded on the lateral edge of the fastener tape. In particular, a waterproof slide fastener that can maintain the watertightness and airtightness even when the fastener tape is bent in the lengthwise direction because, on the assumption that the minimum width between the outer end edges of the neck part of the fastener element in the lengthwise direction of the fastener tape that is a slide direction in which the slider slides is N and the width between the outer end edges of the body part of the fastener element in the same lengthwise direction is B, the value of B/N is between 2.5 and 3.5.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 30, 2017
    Assignee: YKK Corporation
    Inventors: Ryo Mikuma, Makoto Takayama, Hisashi Yoneshima
  • Patent number: 9572406
    Abstract: A waterproof slide fastener where first and second through-holes are drilled in a tape side edge portion of a waterproof tape at specific intervals from one another, and first and second halves of a fastener element are integrally connected to each other through first through-holes. A stopper includes a body portion and an extension portion extending from the body portion. First and second halves of the stopper straddle a pair of waterproof tapes and are integrally connected to each other through second through-holes. According to the waterproof slide fastener, a manufacturing step thereof can be simplified, and it is possible to effectively prevent water from entering the waterproof slide fastener even if it receives a lateral pulling force.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: February 21, 2017
    Assignee: YKK Corporation
    Inventors: Ryo Tanaka, Makoto Takayama, Masamichi Hasegawa, Ryo Mikuma
  • Patent number: 9055790
    Abstract: A slide fastener having a waterproof structure, and having a pair of left and right fastener stringers including a pair of left and right waterproof fastener tapes and a pair of left and right fastener element rows having a plurality of fastener elements along the side ends of the fastener tapes opposite to each other; a slider for engaging and disengaging the left and right fastener elements with and from each other; and a bottom stopper which is formed over the left and right fastener tapes at lower ends of the fastener elements. The bottom stopper covers a first fastener element near the lowest end except an upper portion of its engaging head and a lower portion of the base of the second fastener element adjacent upward to the first fastener element.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: June 16, 2015
    Assignee: YKK Corporation
    Inventors: Ryo Tanaka, Yutaka Tominaga, Masamichi Hasegawa, Ryo Mikuma
  • Publication number: 20150157096
    Abstract: A waterproof slide fastener with waterproof property in which covering the whole front and rear faces of a woven or knitted fastener tape with an elastomer, and fastener elements made of a thermoplastic resin are injection molded on the lateral edge of the fastener tape. In particular, a waterproof slide fastener that can maintain the watertightness and airtightness even when the fastener tape is bent in the lengthwise direction because, on the assumption that the minimum width between the outer end edges of the neck part of the fastener element in the lengthwise direction of the fastener tape that is a slide direction in which the slider slides is N and the width between the outer end edges of the body part of the fastener element in the same lengthwise direction is B, the value of B/N is between 2.5 and 3.5.
    Type: Application
    Filed: July 2, 2012
    Publication date: June 11, 2015
    Applicant: YKK Corporation
    Inventors: Ryo Mikuma, Makoto Takayama, Hisashi Yoneshima
  • Publication number: 20150000087
    Abstract: This waterproof slide fastener (1, 2, 3, 4) is configured so that first and second through-holes (14a, 14b) are formed at specific intervals in tape side edges of waterproof tapes (11), and so that first and second halves (15, 16) of fastener elements (12) are connected and integrated together through the first through-holes (14a). A stopper (20, 30, 40, 50, 60) has a body section (21, 31, 41, 51, 61) and an extension section (22, 32, 42, 52, 62) which extends from the body section (21, 31, 41, 51, 61). First and second halves (23, 24) of the stopper (20, 30, 40, 50, 60) are disposed so as to straddle the pair of waterproof tapes (11) and are connected and integrated together through the second through-holes (14b). As a result of this configuration, the manufacturing step of the waterproof slide fastener (1, 2, 3, 4) is simplified, and water is prevented from entering even if the slide fastener (1, 2, 3, 4) is subjected to a lateral pulling force.
    Type: Application
    Filed: January 30, 2012
    Publication date: January 1, 2015
    Applicant: YKK Corporation
    Inventors: Ryo Tanaka, Makoto Takayama, Masamichi Hasegawa, Ryo Mikuma
  • Publication number: 20140137375
    Abstract: A slide fastener having a waterproof structure, and having a pair of left and right fastener stringers including a pair of left and right waterproof fastener tapes and a pair of left and right fastener element rows having a plurality of fastener elements along the side ends of the fastener tapes opposite to each other; a slider for engaging and disengaging the left and right fastener elements with and from each other; and a bottom stopper which is formed over the left and right fastener tapes at lower ends of the fastener elements. The bottom stopper covers a first fastener element near the lowest end except an upper portion of its engaging head and a lower portion of the base of the second fastener element adjacent upward to the first fastener element.
    Type: Application
    Filed: January 27, 2012
    Publication date: May 22, 2014
    Applicant: YKK Corporation
    Inventors: Ryo Tanaka, Yutaka Tominaga, Masamichi Hasegawa, Ryo Mikuma
  • Publication number: 20130074293
    Abstract: There is provided a slide fastener including a pair of fastener tapes each having a waterproof layer, a pair of fastener element rows each having a plurality of fastener elements, an upper opening slider, a box pin, and an insert pin. At least one recess which is elongated in a longitudinal direction of the pair of fastener tapes is formed on each of both the front and back surfaces of the box pin and both the front and back surfaces of the insert pin.
    Type: Application
    Filed: May 31, 2010
    Publication date: March 28, 2013
    Applicant: YKK Corporation
    Inventor: Ryo Mikuma
  • Patent number: 7870649
    Abstract: A waterproof slide fastener in which an entire surface of a fastener tape is covered with elastomer, through holes are made in a side edge of the fastener tape, and fastener elements each comprising a coupling head, a neck portion, an engaging projection, a leg portion and a tongue piece, are molded by injection molding so as to cover the through holes. Reinforcing portions are provided projectingly from sides of the leg portion so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape so that the reinforcing portions surround the through holes, so the reinforcing portions prevent the through holes from being exposed even when the fastener tape is bent, thereby maintaining water-tightness and airtightness.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: January 18, 2011
    Assignee: YKK Corporation
    Inventors: Ryo Mikuma, Masahiro Kusayama
  • Publication number: 20070277353
    Abstract: A fastener wherein right and left side edge portions can be engaged using a magnetic force, and which can be applied preferably for plastic article such as clothes and further prevented from being opened carelessly even if a lateral pulling force is applied when right and left elements are engaged.
    Type: Application
    Filed: May 11, 2007
    Publication date: December 6, 2007
    Inventors: Yuji Kondo, Akio Hayashi, Takanori Ozawa, Ryo Mikuma, Eriko Sakamoto, Miyuki Ohgaku
  • Publication number: 20070137006
    Abstract: A waterproof slide fastener in which an entire surface of a fastener tape is covered with elastomer, through holes are made in a side edge of the fastener tape, and fastener elements each comprising a coupling head, a neck portion, an engaging projection, a leg portion and a tongue piece, are molded by injection molding so as to cover the through holes. Reinforcing portions are provided projectingly from sides of the leg portion so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape so that the reinforcing portions surround the through holes, so the reinforcing portions prevent the through holes from being exposed even when the fastener tape is bent, thereby maintaining water-tightness and airtightness.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 21, 2007
    Inventors: Ryo Mikuma, Masahiro Kusayama
  • Patent number: D643778
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: August 23, 2011
    Assignee: YKK Corporation
    Inventors: Masamichi Hasegawa, Ryo Mikuma, Shunji Akashi
  • Patent number: D648246
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: November 8, 2011
    Assignee: YKK Corporation
    Inventors: Masamichi Hasegawa, Ryo Mikuma, Shunji Akashi