Patents by Inventor Mitsuyoshi Oyama

Mitsuyoshi Oyama 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).

  • Patent number: 6105302
    Abstract: In a fishing rod having a reel seat on a rod pipe, the fishing rod has a finger trigger on the side which is opposite to the side where the reel seat is provided, in such a manner that the finger trigger is so positioned and configured as to allow an angler to cast the fishing line while palming the fishing rod and a reel mounted on the reel seat with one hand.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: August 22, 2000
    Assignee: Daiwa Seiko, Inc.
    Inventors: Shigeru Yamamoto, Teiji Matsubara, Mitsuyoshi Oyama
  • Patent number: 5419075
    Abstract: A fishing line guide has an attaching seat 2 attached to a fishing rod and a fishing line guide part 5 located above the attaching seat 2. The fishing line guide part 5 has width substantially equal to or smaller than the width of the attaching seat 2, inclined surfaces 6, 7 formed from front and rear end faces to front and rear parts of the attaching seat 2 and side faces formed in smoothly sloped surfaces. The fishing line guide part 5 is configured in a sloping form in section so that the circumferential length in each horizontal plane of the fishing line guide part 5 is smaller than the circumferential length in each horizontal plane taken closer to the axis of the fishing rod. Therefore, a fishing line twining on the fishing line guide part 5 can smoothly and easily loosen upward and thus, can be prevented from tangling on the fishing line guide.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: May 30, 1995
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: 5337507
    Abstract: A handle for fishing rod extends on the tubular body 10 of the fishing rod, and includes a hand-held portion 16 corresponding to the exposed part 10P of the tubular body and having bridges extending off the exposed part along the side surfaces thereof. The handle is reduced in weight, it is easy for a fishing person to hold the handle by his hand, the hand holding the handle is less likely to slip thereon, and the person can feel the bite of a fish well.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: August 16, 1994
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Tomoyoshi Tsurufuji
  • Patent number: 5291684
    Abstract: A casting handle for a fishing rod includes a reel mount which has a reel leg placing section in the upper surface which is to place a reel leg in position to hold the reel, a lower surface curved in such a manner that it is lowered most at the middle in the direction of width and raised towards both side edges, and a sideward expanded portion which is formed by expanding horizontally the portion of the reel leg placing section which is substantially the rear half of the reel leg placing section. The rear end portions of the edge lines of the sideward expanded portion ar raised obliquely backwardly on one side of the reel mount which is opposite to the other side where a trigger is protruded. With the casting handle, the angler can hold the casting handle stable in the casting operation, and the fingers gripping the casting handle feel fitted on and comfortable with it during the palming operation.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: March 8, 1994
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: 5283973
    Abstract: A fishing line guide has an attaching seat 2 attached to a fishing rod and fishing line guide part 5 located above the attaching seat 2. The fishing line guide part 5 has width substantially equal to or smaller than the width of the attaching seat 2, inclined surfaces 6, 7 formed from front and rear end faces to front and rear parts of the attaching seat 2 and side faces formed in smoothly sloped surfaces. The fishing line guide part 5 is configured in a sloping form in section so that the circumferential length in each horizontal plane of the fishing line guide part 5 is smaller than the circumferential length in each horizontal plane taken closer to the axis of the fishing rod. Therefore, a fishing line twining on the fishing line guide part 5 can smoothly and easily loosen upward and thus, can be prevented from tangling on the fishing line guide.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: February 8, 1994
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: 5115591
    Abstract: A fishing rod is disclosed which comprises a handle securely fixed to one end of a fishing rod and provided with a fixed hood, a reel mounting portion and a cylindrical male screw in this order, an engagement grip threadedly engaged with the cylindrical male screw and movable therealong, a movable hood slidingly moved only in the axial direction of the handle and kept in contact with the engagement grip, and a cover cylinder attached onto the movable hood and surrounding an outer portion of the handle except for the reel mounting portion and the fixed hood.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: May 26, 1992
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: D436646
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: January 23, 2001
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shigeru Yamamoto, Yoshiharu Kiyota, Teiji Matsubara, Kaname Yamaguchi
  • Patent number: D469769
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: February 4, 2003
    Assignee: PFU Limited
    Inventors: Minoru Sugitani, Takeshi Chujou, Taketo Kono, Takashi Kishimoto, Mitsuyoshi Oyama
  • Patent number: D314036
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: January 22, 1991
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: D316738
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: May 7, 1991
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: D317345
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: June 4, 1991
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: D323543
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: January 28, 1992
    Inventor: Mitsuyoshi Oyama
  • Patent number: D329273
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: September 8, 1992
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shinya Takizawa
  • Patent number: D329909
    Type: Grant
    Filed: November 23, 1990
    Date of Patent: September 29, 1992
    Assignee: Daiwa Seiko, Inc.
    Inventor: Mitsuyoshi Oyama
  • Patent number: D349942
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: August 23, 1994
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shigeru Yamamoto, Hideyuki Furuya
  • Patent number: D390625
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: February 10, 1998
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shigeru Yamamoto, Teiji Matsubara
  • Patent number: D391621
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: March 3, 1998
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shigeru Yamamoto, Teiji Matsubara
  • Patent number: D418194
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: December 28, 1999
    Assignee: Daiwa Seiko, Inc.
    Inventors: Mitsuyoshi Oyama, Shigeru Yamamoto, Teiji Matsubara