Patents by Inventor Chihiro Iwasaki

Chihiro Iwasaki 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: 20240092958
    Abstract: A thermosetting resin composition containing a maleimide compound (a) having at least one N-substituted maleimide group, and a compound (b) represented by the following general formula (1) exhibiting no reactivity with the maleimide group of the component (a) (Xb1 represents a single bond or a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 5 carbon atoms; Rb1 and Rb2 each independently represent a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 10 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 ring carbon atoms, a substituted or unsubstituted heterocyclic aromatic hydrocarbon group having 5 to 20 ring atoms, an oxygen atom-containing group, or a group containing a combination of these groups; and m and n each independently represent an integer of 0 to 5).
    Type: Application
    Filed: December 17, 2021
    Publication date: March 21, 2024
    Inventors: Koji MORITA, Ryo SHIMOKAWA, Shinji TSUCHIKAWA, Keiichi KASUGA, Chihiro HAYASHI, Tomio IWASAKI
  • Patent number: 11297905
    Abstract: A fastening pin includes a needle having a tip and a base end, a holder having a base-end holding part that holds the base end of the needle, and a hook part provided in the holder and configured for the tip of the needle to be hooked thereto. The needle has a non-straight shape bulging in a direction away from the holder and is elastically pivotable around the based end toward the hook part. The hook part is provided with a groove and a protruding guide part. The groove is open toward the holder and configured for the tip of the needle to engage therein. The protruding guide part is arranged on the opposite side of the holder with respect to the groove.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: April 12, 2022
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Yui Teramoto, Chihiro Iwasaki
  • Publication number: 20210298429
    Abstract: A fastening pin includes a needle having a tip and a base end, a holder having a base-end holding part that holds the base end of the needle, and a hook part provided in the holder and configured for the tip of the needle to be hooked thereto. The needle has a non-straight shape bulging in a direction away from the holder and is elastically pivotable around the based end toward the hook part. The hook part is provided with a groove and a protruding guide part. The groove is open toward the holder and configured for the tip of the needle to engage therein. The protruding guide part is arranged on the opposite side of the holder with respect to the groove.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 30, 2021
    Inventors: Yui TERAMOTO, Chihiro IWASAKI
  • Patent number: 11098425
    Abstract: A sewing machine guiding tool includes a presser foot, a holder and a gauge. The presser foot includes a bottom wall and a rear support. The bottom wall is formed with a needle-passing hole and with a slit extending from the needle-passing hole to the front end of the bottom wall. The rear support is connected to the rear end of the bottom wall. The holder, attached to a presser bar of the sewing machine, holds the presser foot pivotally about a horizontal axis. The gauge, supported by the rear support to be slidable in parallel to the horizontal axis, includes a ruler plate and a guide portion. The ruler plate has a surface marked with a scale. The guide portion extends from the ruler plate. The ruler plate is disposed above the bottom wall with its surface inclined to become higher as proceeding rearward.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 24, 2021
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Nancy L. Zieman, Yuji Kawasaki, Chihiro Iwasaki
  • Patent number: 10729198
    Abstract: A seam ripper includes a metal blade member, a handle and a slider. The blade member is supported by the handle and made of a shaft and a blade part at an end of the shaft. The slider causes the blade member to move between a retracted position and an advanced position. The shaft is housed in the handle at the retracted position. The blade part and at least a portion of the shaft are outside the handle at the advanced position. The blade part includes a cutting blade flanked by a needle portion and a ball-shaped portion. When the blade member is at the retracted position, the entirety of the needle portion is housed in the handle, and a portion of the cutting blade is exposed to the outside of the handle.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 4, 2020
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Atsushi Tanaka
  • Publication number: 20200109502
    Abstract: A sewing machine guiding tool includes a presser foot, a holder and a gauge. The presser foot includes a bottom wall and a rear support. The bottom wall is formed with a needle-passing hole and with a slit extending from the needle-passing hole to the front end of the bottom wall. The rear support is connected to the rear end of the bottom wall. The holder, attached to a presser bar of the sewing machine, holds the presser foot pivotally about a horizontal axis. The gauge, supported by the rear support to be slidable in parallel to the horizontal axis, includes a ruler plate and a guide portion. The ruler plate has a surface marked with a scale. The guide portion extends from the ruler plate. The ruler plate is disposed above the bottom wall with its surface inclined to become higher as proceeding rearward.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 9, 2020
    Inventors: Nancy L. Zieman, Yuji Kawasaki, Chihiro Iwasaki
  • Patent number: 10301753
    Abstract: A presser foot for a sewing machine has a bottom wall, first and second side walls, and a guard piece. The bottom wall has front and rear ends. In addition, the bottom wall is provided with a needle-passing hole and a first slit extending from the needle-passing hole to the front end. The first side wall and the second side wall are formed integral with the bottom wall and spaced apart from each other in a width direction of the bottom wall. The guard piece is attached to the first side wall to cover the gap between the first side wall and the second side wall from above. In plan view, the guard piece is spaced from the needle-passing hole and does not overlap with the needle-passing hole. The guard piece and the second side wall are spaced apart from each other by a second slit.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 28, 2019
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Yuji Kawasaki
  • Publication number: 20190112738
    Abstract: A presser foot for a sewing machine has a bottom wall, first and second side walls, and a guard piece. The bottom wall has front and rear ends. In addition, the bottom wall is provided with a needle-passing hole and a first slit extending from the needle-passing hole to the front end. The first side wall and the second side wall are formed integral with the bottom wall and spaced apart from each other in a width direction of the bottom wall. The guard piece is attached to the first side wall to cover the gap between the first side wall and the second side wall from above. In plan view, the guard piece is spaced from the needle-passing hole and does not overlap with the needle-passing hole. The guard piece and the second side wall are spaced apart from each other by a second slit.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 18, 2019
    Inventors: Chihiro IWASAKI, Yuji KAWASAKI
  • Publication number: 20190104794
    Abstract: A seam ripper includes a metal blade member, a handle and a slider. The blade member is supported by the handle and made of a shaft and a blade part at an end of the shaft. The slider causes the blade member to move between a retracted position and an advanced position. The shaft is housed in the handle at the retracted position. The blade part and at least a portion of the shaft are outside the handle at the advanced position. The blade part includes a cutting blade flanked by a needle portion and a ball-shaped portion. When the blade member is at the retracted position, the entirety of the needle portion is housed in the handle, and a portion of the cutting blade is exposed to the outside of the handle.
    Type: Application
    Filed: September 18, 2018
    Publication date: April 11, 2019
    Inventors: Chihiro IWASAKI, Atsushi TANAKA
  • Publication number: 20170334042
    Abstract: A clip for sewing includes lower and upper members that are pivotable to each other about a given axis. The lower member has a first prong portion and a first handling portion opposite to the first prong portion. The upper member has a second prong portion and a second handling portion opposite to the second prong portion. A bias member urges the lower and the upper members about the axis so that the first prong portion and the second prong portion are drawn to each other to shut. A plurality of projection/recess pairs are provided, each pair having ng a recess and a corresponding projection to be received in the recess. In each of the projection/recess pairs, the recess is provided at one of the first and second prong portions, while the corresponding projection is provided at the other of them.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 23, 2017
    Inventor: Chihiro IWASAKI
  • Publication number: 20170144797
    Abstract: A metal parts attracting holder is made up of a case, a cover and a permanent magnet. The case includes a bottom wall, a top wall and a side wall connecting the bottom wall and the top wall to each other. The cover is removably attached to the case. The permanent magnet is provided within the case. The top wall of the case has an attracting surface to which metal parts are attached by the magnetic force of the permanent magnet. The cover is formed with a recess with which the bottom wall is engaged.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 25, 2017
    Inventors: Yuji KAWASAKI, Chihiro IWASAKI
  • Patent number: 9611574
    Abstract: A sewing tool holder includes a base and a plurality of of projections. The base has an obverse face and a reverse face spaced from each other in a thickness direction of the base. The plurality of projections are supported on the obverse face of the base via a common connecting portion attached to the base. Each of the plurality of projections has an upper or front end and a root or lower end that is connected to the common connecting portion.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: April 4, 2017
    Assignee: CLOVER MFG. CO., LTD.
    Inventor: Chihiro Iwasaki
  • Patent number: 9441320
    Abstract: A cloth presser includes a grip portion, a first press end and a second press end. The grip portion is elongated, having a straight longitudinal axis. The first press end and the second press end are spaced apart from each other, with the grip portion intervening between the first press end and the second press end. The first press end is configured to make point contact with an object such as a piece of cloth, and the second press end is configured to make surface contact with the object.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: September 13, 2016
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Kumiko Nitta, Chihiro Iwasaki
  • Patent number: D758176
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 7, 2016
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Atsuko Okuma
  • Patent number: D762036
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: July 19, 2016
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Atsushi Tanaka, Juho Viitasalo
  • Patent number: D779346
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: February 21, 2017
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Atsushi Tanaka
  • Patent number: D789810
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 20, 2017
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Joan Hawley, Chihiro Iwasaki
  • Patent number: D821086
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 26, 2018
    Assignee: CLOVER MFG. CO., LTD.
    Inventor: Chihiro Iwasaki
  • Patent number: D877487
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: March 10, 2020
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Chihiro Iwasaki, Atsushi Tanaka
  • Patent number: D893325
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: August 18, 2020
    Assignee: CLOVER MFG. CO., LTD.
    Inventors: Nancy L. Zieman, Yuji Kawasaki, Chihiro Iwasaki