Patents by Inventor Kenji Matsubara

Kenji Matsubara 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: 5355319
    Abstract: For each of a plurality of frame patterns, pattern data of the frame pattern, position data of character patterns and data of a maximum number of character patterns are stored in a memory. When an arbitrary one of the frame patterns and a plurality of arbitrary character patterns are selected, data composition is performed such that the selected character patterns are combined with the frame pattern at a predetermined position on the condition that the number of such character patterns is limited to the maximum number for the selected frame pattern.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: October 11, 1994
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kenji Matsubara
  • Patent number: 5308569
    Abstract: A process for the preparation of an aromatic polyimide film includes the steps of casting a polyamide acid solution containing an imidization agent on a support in the form of a film, heating the filmy cast solution on the support at a temperature of 80.degree. to 200.degree. C. to obtain a self-supportable film; peeling the self-supportable film from the support; and further heating the film at a temperature of not lower than 300.degree. C. The polyamide acid solution includes a polyamide acid obtained by polymerization reaction of 3,4,3',4'-biphenyltetracarboxylic dianhydride and p-phenylenediamine in a mixture of a polar organic solvent and a small amount of an imidization agent selected from imidazole, a substituted imidazole, benzimidazole, a substituted benzimidazole, isoquinoline, and a substituted pyridine.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: May 3, 1994
    Assignee: Ube Industries, Ltd.
    Inventors: Toshikazu Hamamoto, Hiroshi Inoue, Yoshiyuki Miwa, Tetsuji Hirano, Katsuo Imatani, Kenji Matsubara, Takashi Kohno
  • Patent number: 5267350
    Abstract: An instruction fetch control method is generally arranged so as to have a plurality of instruction buffers, issue an instruction read request to a memory when a part of the instruction buffers becomes in an empty state and store a fetched instruction in the instruction buffer in an empty state. A flag is provided for specifying another instruction buffer which becomes in an empty state after the instruction stored in the instruction buffer is transmitted to a decoder. The quantity of instructions to be stored in the instruction buffer is made variable in accordance with output of the flag latch, and the fetched instruction is stored in the instruction buffer in an empty state. This arrangement enables a plurality of instructions fetched upon an instruction read request to be stored in the empty instruction buffers, thereby reducing the number of read requests issued.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: November 30, 1993
    Inventors: Kenji Matsubara, Seiji Nagai, Tohru Shonai, Akihiro Fuseda
  • Patent number: 5200255
    Abstract: An aromatic polyimide film useful as a face for a magnetic recording material having a back face-side half stratum thereof containing principal filler fine particles which provide a low friction back face-side surface having a centerline average surface roughness of 2 to 10 m .mu.m, and a front face-side half stratum thereof free from the principal filler particles and optionally containing additional filler fine particles having a size of 0.05 to 0.7 time that of the principal filler particles in a concentration of 0.1 to 0.8 time that of the principal filler particles, which additional filler particles provide a high smoothness front face-side surface having a centerline average surface roughness (Ra) of 0.1 to 0.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: April 6, 1993
    Assignee: Ube Industries, Ltd.
    Inventors: Kenji Matsubara, Akinori Ohtani, Toshiyuki Nishino, Kazuhiko Yoshioka
  • Patent number: 5074232
    Abstract: In the pattern sewing machine comprising a pattern selector for selecting and combining pattern units such as characters and symbols and a controller for driving a sewing mechanism and a feeding mechanism to form the combination of pattern units selected by the pattern selector, the controller is provided with a diagonal placing unit for placing one pattern unit in a diagonal direction relative to another pattern unit adjacent thereto when the two adjacent pattern units are sewn in series.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: December 24, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kenji Matsubara, Fujio Horie
  • Patent number: 5016550
    Abstract: In the sewing machine of this invention, the operator can confirm on the selected-mode display M9 provided in the display M4 that the selected mode is for writing the pattern and whether the selected pattern is for only one use or the selected pattern is to be stored in the nonvolatile storage M7. The pattern selector M2 selects at least two patterns from the pattern-data storage M1. The arrangement of the selected patterns is stored in the pattern storage M3. The stored arrangement of the patterns is stored in the nonvolatile storage M7. Through specified processes, the patterns reader M8 develops the arrangement of the pattern stored in the nonvolatile storage M7 into the pattern storage M3. The controller M6 sequentially reads the arrangement of the patterns developed in the pattern storage M3 and drives the sewing mechanism M5 to form the arrangement of the patterns on fabric. When the pattern to be used repeatedly is thus once entered, the pattern can repeatedly be stitched on fabric.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: May 21, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Fujio Horie, Kenji Matsubara
  • Patent number: 4993337
    Abstract: A sewing machine includes a timing pulse generator, a thread feeding device, thread sensor, and microcomputer. The timing pulse generator generates a timing pulse when a main shaft is rotated by a predetermined rotational increment by a main motor. The thread feeding device feeds out a needle thread toward a needle. The thread sensor is disposed in a path of the needle thread between the thread feeding device and the needle, and generates a thread breakage signal when the needle thread is out of the path. The microcomputer drives the thread feeding device based on the timing signal generated by the timing pulse generator if the thread breakage signal is not generated by the thread sensor. The microcomputer counts the timing pulses after the thread breakage signal has been generated by the thread sensor. The microcomputer stops the main motor when a count value has reached first predetermined value.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: February 19, 1991
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kenji Matsubara
  • Patent number: 4791877
    Abstract: The start and end timing of fabric feed in a sewing machine greatly affects the tightening of needle thread, that is, the sewing quality. Among the electronically controlled zigzag sewing machines, those equipped with feed means directly driven by a pulse motor supplied with command pulses, it has become possible to control freely the start and end timing of fabric feed.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: December 20, 1988
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Fujio Horie, Kenji Matsubara
  • Patent number: 4721050
    Abstract: A feed device has feed members for feeding a work, and a stepping motor for directly driving the feed members. The period of driving pulses for driving the stepping motor is determined by feed control means on the basis of a speed signal indicating an actual operating speed of the main motor of the sewing machine or on the basis of a selectively set speed. The feed control means controls the stepping motor so that the feed motion of the feed members is continued also after the completion of the thread tightening operation of the take-up lever in order that the needle thread is tightened properly by the feed motion of the feed members.
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: January 26, 1988
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Naganuma, Fujio Horie, Kenji Matsubara