Patents by Inventor Naoki Numa

Naoki Numa 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).

  • Chair
    Patent number: 7246859
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: July 24, 2007
    Assignee: Okamura Corporation
    Inventors: Ryo Igarashi, Naoki Numa, Ken Nakayama, Hiroshi Masunaga
  • Tilting mechanism for a chair and a chair having the same
    Patent number: 7243993
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: July 17, 2007
    Assignee: Okamura Corporation
    Inventors: Ryo Igarashi, Naoki Numa, Ken Nakayama, Hiroshi Masunaga
  • CHAIR
    Publication number: 20060244295
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Application
    Filed: July 7, 2006
    Publication date: November 2, 2006
    Applicant: OKAMURA CORPORATION
    Inventors: Ryo IGARASHI, Naoki NUMA, Ken NAKAYAMA, Hiroshi MASUNAGA
  • TILTING MECHANISM FOR A CHAIR AND A CHAIR HAVING THE SAME
    Publication number: 20060238009
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Application
    Filed: July 10, 2006
    Publication date: October 26, 2006
    Applicant: OKAMURA CORPORATION
    Inventors: Ryo IGARASHI, Naoki NUMA, Ken NAKAYAMA, Hiroshi MASUNAGA
  • Tilting mechanism for a chair and chair having the same
    Patent number: 7097249
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: August 29, 2006
    Assignee: Okamura Corporation
    Inventors: Ryo Igarashi, Naoki Numa, Ken Nakayama, Hiroshi Masunaga
  • Structure for mounting a net member to a frame for a seat or backrest of a chair
    Patent number: 6942300
    Abstract: A net member is stretched over a frame for a seat and backrest of a chair. An engagement member attached to the end of the net member is inserted into an engagement groove on the lower surface of the basic frame. A binding frame is pressed onto the lower surface of the basic frame and the net member is fixed between the basic frame and the binding frame by the engagement piece. Warps are woven or knitted in a mesh structure over the seat and backrest to wefts comprising elastic yarns and chenille yarns.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: September 13, 2005
    Assignee: Okamura Corporation
    Inventors: Naoki Numa, Tetsuya Narita, Ryo Igarashi
  • Structure for mounting a net member to a frame for a seat or backrest of a chair
    Publication number: 20040124689
    Abstract: A net member is stretched over a frame for a seat and backrest of a chair. An engagement member attached to the end of the net member is inserted into an engagement groove on the lower surface of the basic frame. A binding frame is pressed onto the lower surface of the basic frame and the net member is fixed between the basic frame and the binding frame by the engagement piece.
    Type: Application
    Filed: July 22, 2003
    Publication date: July 1, 2004
    Applicant: Okumura Corporation
    Inventors: Naoki Numa, Tetsuya Narita, Ryo Igarashi
  • Chair
    Publication number: 20040017102
    Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.
    Type: Application
    Filed: July 17, 2003
    Publication date: January 29, 2004
    Applicant: Okamura Corporation
    Inventors: Ryo Igarashi, Naoki Numa, Ken Nakayama, Hiroshi Masunaga