Patents by Inventor Mitsuru Kuroda

Mitsuru Kuroda 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: 6355890
    Abstract: A button structure for an electronic apparatus includes buttons each facing a particular switch device arranged on a printed circuit board with the intermediary of a respective Belleville spring that snaps through when pressed. The button structure reduces an annoying click sound and minimizes a stroke required of each key top member to thereby promote easy operation. Key top members and a flat base with button bodies formed thereon are separable from each other in order to obviate wastes on a production line as far as possible while reducing cost. In addition, the button structure is easy to recycle.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: March 12, 2002
    Assignee: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Publication number: 20020019252
    Abstract: A portable radio device which effectively prevents the property of transmission of radio waves from being degraded due to the user's body, is disclosed. A housing of the portable radio device has a lower end portion shaped to protrude from the major surface of the housing and taper down towards the lower end of the housing. An antenna is provided within the lower end portion.
    Type: Application
    Filed: August 2, 2001
    Publication date: February 14, 2002
    Applicant: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Publication number: 20010044320
    Abstract: A wireless apparatus having a foldable structure allowing improved antenna condition when opened with improved convenience is disclosed. A first housing and a second housing coupled by a hinge are freely opened and closed around the hinge. An antenna section for use in wireless communication is coupled to the first and second housings by the hinge such that the antenna section is situated at back of the second housing and is freely opened and closed around the hinge with respect to the second housing. A spring force is applied to the antenna section to rotate it in an opening direction. The antenna section is latched by an antenna latch member to be kept in a closed state. When the first housing and the second housing are opened to a predetermined angle, the latch is released to open the antenna section away from the second housing.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 22, 2001
    Applicant: NEC Corporation
    Inventors: Shuichi Ono, Mitsuru Kuroda
  • Publication number: 20010035931
    Abstract: In a display panel structure, a display panel is interposed between a transparent member and a metal sealing member. The edge portions of the sealing member are cemented to edge portions of the transparent member by adhesive so that the display panel is air-tightly sealed from the outside. The sealing member is integrally formed with a lattice of outwardly raised ribs for adding rigidity to the sealing member.
    Type: Application
    Filed: April 4, 2001
    Publication date: November 1, 2001
    Inventors: Keiichiro Kumagai, Mitsuru Kuroda
  • Patent number: 6272901
    Abstract: In a portable electronic appliance, it includes a housing and a detecting apparatus. The detecting apparatus includes a shock detecting portion and a fixing portion. The shock detecting portion has at least one shock sensing portion which is damaged or deformed due to a shock stronger than or equal to a pre-selected strength. The fixing portion fixes the shock detecting portion to an inside of a housing of an electronic appliance.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: August 14, 2001
    Assignee: NEC Corporation
    Inventors: Kazuhiro Takeuchi, Mitsuru Kuroda
  • Publication number: 20010011030
    Abstract: A portable radio device permits the user to use contents on the Internet with a sufficiently large display screen size without impairing the portability of its own. The portable radio device has a lid, a lower device portion, and an upper device portion. The lid is angularly movably mounted on the lower device portion by a joint, and can be folded over the lower device portion. The upper device portion is angularly connected to the lower device portion by a hinge, and can be folded over the lower device portion and the lid which has been folded over the lower device portion. The lid has a concave reflecting mirror disposed on the reverse side thereof. The lower device portion includes a projection display device disposed on a surface thereof for projecting an image onto the concave reflecting mirror when the lid is opened.
    Type: Application
    Filed: January 30, 2001
    Publication date: August 2, 2001
    Inventor: Mitsuru Kuroda
  • Patent number: 5990432
    Abstract: The housing of the case has a pair of ribs and a hole for holding an external switch button, formed therein. The external switch button is provided with an actuating section for actuating an internal press-switch button, an arm section capable of being elastically deformed to allow movement of the actuating section, and a supporting section which is sandwiched between the pair of ribs.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: November 23, 1999
    Assignee: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Patent number: 5845366
    Abstract: A hinge structure for a portable type electronic equipment connects a protection cover which protects a tablet type display and a substantially rectangular parallelepiped case which serves as an equipment main body with each other. This hinge structure includes a substantially cylindrical trunk portion, a pair of joint portions, a pair of first shaft projections, and two pairs of second shaft projections. The trunk portion has a predetermined length. The pair of joint portions are integrally formed on two ends of the trunk portion and project from said two ends of the trunk portion for a predetermined length in one direction perpendicular to an axis of the trunk portion so as to form a bracket together with the trunk portion. The pair of first shaft projections project from proximal-side end faces, near the trunk portion, of the pair of joint portions for a predetermined length outward in an axial direction of the trunk portion so as to fit in the protection cover.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: December 8, 1998
    Assignee: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Patent number: 5788060
    Abstract: A case has a pair of ribs and a hole for holding an external switch button, formed therein. The external switch button is provided with an actuating section for actuating an internal press-button switch, an arm section capable of being elastically deformed to allow movement of the actuating section, and a supporting section which is sandwiched between the pair of ribs.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: August 4, 1998
    Assignee: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Patent number: 5562223
    Abstract: A casing for a pager or similar miniature portable apparatus is made up of a box-like case and a cover removably fitted on the case. The case is provided with ribs having a generally I-shaped cross-section and ribs having a generally L-shaped cross-section. The I- and L-shaped ribs alternate with each other. The cover is provided with ribs having a generally U-shaped cross-section and recesses which mate with the I-shaped ribs and the L-shaped ribs of the case, respectively.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: October 8, 1996
    Assignee: NEC Corporation
    Inventor: Mitsuru Kuroda
  • Patent number: 4433460
    Abstract: Apparatus for spreading and guiding a web of textile fabric or the like being longitudinally fed, comprising a pair of web spreading and guiding devices disposed at opposite sides of the web, each device comprising a pair of rotary members rotatably supported in generally axially spaced apart and opposed relation to each other, with the axis of rotation of one of the rotary members being tilted relative to the axis of rotation of the other of the rotary members. The tilted rotary member is provided on the periphery thereof with a circular array of pushing members projecting toward the corresponding periphery of the other rotary member. As the two rotary members are rotated about their respective axes by friction with the running web held therebetween, the pushing members successively come to engage a selvage of the running web at a nipping point and disengage from the selvage at a releasing point.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: February 28, 1984
    Inventor: Mitsuru Kuroda