Patents by Inventor Takao Iwasa

Takao Iwasa 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: 7378765
    Abstract: The present invention provides a cylinder-type linear motor. The motor includes a fixed part including a coil assembly having a plurality of ring-shaped coils arranged in the axial direction to form a cylindrical space, and a yoke member made of a magnetic material, which is provided on the outer periphery side of the coil assembly and a moving part including a linear motion shaft provided on the axis line of the fixed part so as to be capable of reciprocating in the axial direction, and a permanent magnet assembly having one or more permanent magnets magnetized in the axial direction, which is provided on the linear motion shaft. The motor is characterized by when the axial length of the ring-shaped coil is taken as C, the axial length of the permanent magnet assembly as M, and the outside diameter thereof as D, a stroke S is equal to or smaller than (n×C?M), the axial length Y of the yoke member is set equal to or larger than (M+S+0.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: May 27, 2008
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Takao Iwasa, Hirobumi Satomi
  • Publication number: 20080045569
    Abstract: A chemical compound represented by the formula [I]: (wherein R1 represents a hydroxyl group or the like, m represents 0 or an integer of 1 to 5, R2 represents a halogen atom or the like, k represents 0 or an integer of 1 to 4, R3, R31, R4, R41, R5, R51, R6, R61, and R7 each independently represents a hydrogen atom or the like, X represents an oxygen atom or the like, and n represents 0 or 1), a salt, an N-oxide of the chemical compound represented by formula [I], and a pest control agent containing the formula [I] as its active constituent.
    Type: Application
    Filed: March 30, 2005
    Publication date: February 21, 2008
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Isami Hamamoto, Jun Takahashi, Makio Yano, Daisuke Hanai, Takao Iwasa
  • Publication number: 20060028072
    Abstract: The present invention provides a cylinder-type linear motor. The motor includes a fixed part including a coil assembly having a plurality of ring-shaped coils arranged in the axial direction to form a cylindrical space, and a yoke member made of a magnetic material, which is provided on the outer periphery side of the coil assembly and a moving part including a linear motion shaft provided on the axis line of the fixed part so as to be capable of reciprocating in the axial direction, and a permanent magnet assembly having one or more permanent magnets magnetized in the axial direction, which is provided on the linear motion shaft. The motor is characterized by when the axial length of the ring-shaped coil is taken as C, the axial length of the permanent magnet assembly as M, and the outside diameter thereof as D, a stroke S is equal to or smaller than (n×C?M), the axial length Y of the yoke member is set equal to or larger than (M+S+0.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 9, 2006
    Inventors: Takao Iwasa, Hirobumi Satomi
  • Patent number: 6987112
    Abstract: The present invention is directed to compounds represented by Formula (1); wherein A, R, X, Y and n are as defined in the description, the salts thereof, and insecticide/acaricide compositions characterized by comprising one or more of said compounds and/or said salts as the active ingredients.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: January 17, 2006
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Yasushi Shibata, Renpei Hatano, Takao Iwasa, Satoru Makita, Daisuke Hanai, Masao Yamaguchi, Naomi Ichikawa
  • Patent number: 6737382
    Abstract: Insecticidal aminothiazole derivatives and the use as an insecticide and acaricide of the compounds of formula (1): wherein R1 is cyano or fluoroalkyl, R2 is halogen, SCN or aryl, R3 is H, C1-C6 alkyl, SO2R5 or C(O)R6, R4 and R6 are, independently, aryl, phenylalkyl, alkyl, cycloalkyl groups, being optionally substituted by one or more of halogen, cyano, alkyl, alkenyl, alkynyl, haloalkyl, alkoxy, nitro, alkoxycarbonyl, alkylcarbonyloxy, alkylenedioxy, alkylcarbonyl, amino, alkylamino, haloalkoxy, alkylthio, alkylsulfonyl, haloalkenyl, alkoxycarbonylalkyl or alkoxycarbonylalkoxy; said aryl, phenylalkyl groups may additionally be fused to a cycloalkyl ring, R5 is C1-C6 alkyl, haloalkyl, X is O, S, NR7, R7 is alkyl, cycloalkyl, alkoxy, alkenylalkyloxy, alkynylalkyloxy, alkoxycarbonylalkyloxy.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: May 18, 2004
    Assignee: Nippon Soda Co. Ltd.
    Inventors: Isao Iwataki, Takao Iwasa, Renpei Hatano, Elizabeth Laura Moyano
  • Publication number: 20040082629
    Abstract: Insecticidal aminothiazole derivatives and the use as an insecticide and acaricide of the compounds of formula (1): 1
    Type: Application
    Filed: October 23, 2002
    Publication date: April 29, 2004
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Isao Iwataki, Takao Iwasa, Renpei Hatano, Elizabeth Laura Moyano
  • Publication number: 20040072826
    Abstract: The present invention is directed to compounds represented by Formula (1); 1
    Type: Application
    Filed: October 8, 2003
    Publication date: April 15, 2004
    Inventors: Yasushi Shibata, Renpei Hatano, Takao Iwasa, Satoru Makita, Daisuke Hanai, Masao Yamaguchi, Naomi Ichikawa
  • Patent number: 6492404
    Abstract: Compounds represented by the general formula (1); and pest controlling agents containing one or more of the compounds as the active ingredients, wherein A is substituted phenyl, C1-C6 alkly or the like; B is hydrogen, optionally substituted phenyl or the like; R is C1-C6 alkly, a group represented by the general formula: COR1 (wherein R1 is C1-C12 alkyl, C1-C6 alkoxy, C1-C6 haloalkyl or the like) or the like; X is halogeno, C1-C6 alkyl, C1-C6 haloalkyl or the like; and n is an integer of 1 to 5.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: December 10, 2002
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Yasushi Shibata, Koichiro Aoyagi, Hidemitsu Takahashi, Takao Iwasa, Tomohiro Take
  • Patent number: 5892048
    Abstract: This Invention concerns a triazole compound represented by the formula ?I! or a salt thereof and a method for the production thereof. ##STR1## ?wherein X.sub.1 stands for halogen atoms, C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 alkoxy groups, C.sub.1 -C.sub.6 haloalkyl groups, etc., X.sub.2 stands for halogen atoms, C.sub.1 -C.sub.6 alkyl groups, or C.sub.1 -C.sub.6 alkoxy groups, Y stands for halogen atoms, C.sub.1 -C.sub.12 alkyl groups, C.sub.1 -C.sub.6 haloalkyl groups, phenyl group optionally containing a substituent, etc.R.sub.1 stands for C.sub.1 -C.sub.6 alkyl groups, C.sub.2 -C.sub.6 alkenyl groups, C.sub.2 -C.sub.6 alkinyl groups, etc. Z stands for --CR.sub.2 R.sub.3 --, --CH.sub.2 D--, or --CH.dbd.CH--, R.sub.2 and R.sub.3 independently stand for hydrogen atom, halogen atoms, hydroxy group, etc., D stands for CH.sub.2, CO, O, or S, m stands for an integer in the range of 0-4, and n stands for an integer from 0 to 5!.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: April 6, 1999
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Takashi Kishimoto, Yasuo Yamada, Takao Iwasa, Michihiko Matsuda, Renpei Hatano
  • Patent number: 5760033
    Abstract: A compound represented by the chemical formula ?1!: ##STR1## wherein Z is oxygen or sulfur, Y is halogen, optionally substituted alkyl, optionally substituted alkoxycarbonyl, optionally substituted alkoxy, S(O).sub.p r.sup.1 wherein p denotes an integer from 0 to 2, r.sup.1 is optionally substituted alkyl, nitro, cyano or optionally substituted amino, m denotes an integer from 1 to 3, R.sub.1, R.sub.2 and R.sub.4 are same or different one another and each independently hydrogen, optionally substituted alkyl or optionally substituted phenyl, R.sub.3 is alkyl, alkenyl, aralkyl, cycloalkyl, phenyl, naphthyl, pyridyl, furyl or thienyl, those which substituents can be further optionally substituted by halogen, hydroxy, optionally substituted alkyl or the like, and a chemical agent for controlling pests.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: June 2, 1998
    Inventors: Yasuo Yamada, Takashi Kishimoto, Michihiko Matsuda, Renpei Hatano, Takao Iwasa, Makio Yano
  • Patent number: 5693989
    Abstract: A linear pulse motor includes a stator core manufactured easily and windings for phases disposed in the circumferential direction of the stator core and the length thereof is not lengthened in the shaft direction even when a multi-phase linear pulse motor is configured. The linear pulse motor includes a stator 1 having teeth 17 formed on an inner peripheral surface thereof in the shaft direction and a plurality of salient poles 11, 12, 13, . . . disposed at an equal pitch angle and a mover disposed movably in the shaft direction. A stator core 10 is formed by laminating stator iron plates 30 with the stator iron plates being rotated sequentially by a predetermined angle. When k is an integer larger than or equal to 1 and m is the number of phase, the stator iron plate includes k.multidot.m salient poles P1, P2, P3, . . . .
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: December 2, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5629572
    Abstract: A linear pulse motor includes a stator core manufactured easily and windings for phases disposed in the circumferential direction of the stator core and the length thereof is not lengthened in the shaft direction even when a multi-phase linear pulse motor is configured. The linear pulse motor includes a stator 1 having teeth 17 formed on an inner peripheral surface thereof in the shaft direction and a plurality of salient poles 11, 12, 13, . . . disposed at an equal pitch angle and a mover disposed movably in the shaft direction. A stator core 10 is formed by laminating stator iron plates 30 with the stator iron plates being rotated sequentially by a predetermined angle. When k is an integer larger than or equal to 1 and m is the number of phase, the stator iron plate includes k.multidot.m salient poles P1, P2, P3, . . .
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: May 13, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5627418
    Abstract: A combined linear-rotary stepping motor shares stator iron plates and mover iron cores for a linear motor portion and a rotary motor portion without lengthening the length in the shaft direction.The combined linear-rotary stepping motor includes a stator 1 having a stator iron core 10 provided with a plurality of salient poles 11, 12, 13, . . . composed of the salient poles having a plurality of first stator teeth 24 formed in inner peripheral surfaces thereof in the direction of a shaft 21 and the salient poles having a plurality of second stator teeth 25 formed in inner peripheral surfaces thereof in the circumferential direction and a mover 2 having mover iron cores 22a and 22b supported within the stator 1 movably in the shaft direction and rotatably and provided with a plurality of mover teeth 26 formed in outer peripheral surfaces thereof at an equal pitch in the shaft direction and the circumferential direction in opposing relation to the first and second stator teeth 24, 25.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: May 6, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5603155
    Abstract: An iron core of a multi-phase linear motor which is not restricted by the shape of the motor is manufactured. A stator 1 and a mover 2 are disposed opposite to each other and are separated by an air gap. In manufacturing of the iron core of the multi-phase linear motor having a multiplicity of teeth 16 formed on surfaces of a plurality of salient poles P1, P2, . . . disposed in the stator 1 or the motor 2, the stator iron core 10 or mover iron cores 22a and 22b are formed by punching iron plates 30a, 30b, . . . forming the iron core by a punching mold 31 while selectively controlling actuation and withdrawal of movable punches 33 included in the punching mold 31 and disposed so as to be actuable and withdrawable toward and away from the salient poles so that the tips of the salient poles P1, P2, . . . form tooth tops 16a or tooth bottoms 16b of the teeth 16 at a predetermined period for each punching of the iron plates and by laminating the punched iron plates successively.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: February 18, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5602431
    Abstract: A linear motor is operated as an m-phase linear pulse motor or a brushless DC linear motor capable of producing large driving force. The linear motor includes an even number N of salient poles 11, 12, . . . disposed at an equal pitch angle and includes a stator 1 having a plurality of permanent magnet poles disposed on inner peripheral surfaces of the salient poles to have polarities different from each other in the shaft direction and a mover 3 disposed movably in the shaft direction. The salient poles are constituted by pairs of the salient poles adjacent to each other and include m sets of salient pole groups each composed of (N/m) salient poles disposed at an angle of (720 m/N) degrees and windings W1, W2, . . .
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: February 11, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5598044
    Abstract: A linear motor includes a stator 1 having an even number N of salient poles 11, 12, . . . disposed at an equal angle pitch and a mover 3 disposed movably in a shaft direction. The salient poles are constituted by pairs of salient poles adjacent to each other and including m sets of salient pole groups composed of (N/2m) sets of salient pole pairs disposed at an angle of (720m/N) degrees. Windings W1, W2, . . . wound on (N/m)-1 or (N/m)-2 salient poles belonging to each of the salient pole groups are connected to have opposite polarities between the pair of salient poles and are connected to have the same polarity between the salient poles which do not constitute the pair of salient poles and are disposed to interpose the salient pole of the other phase therebetween to constitute phase windings for m phases. Remaining salient poles of the salient pole group are caused to detect a position and a movement direction of the mover 3 as sensor poles S.sub.A and S.sub.B.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: January 28, 1997
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Hirobumi Satomi, Takao Iwasa
  • Patent number: 5548169
    Abstract: A motor with a built-in capacitor is proposed. The capacitor is formed into a ring so that a shaft of the motor penetrates a center portion of the capacitor and is disposed in the motor so that the shaft of the motor penetrates the center portion. The capacitor is mounted at the same time as the motor is mounted and the mounting work of the capacitor is easy. The external shape of the motor itself is the same as that of a conventional motor. The whole structure of the motor is compact as compared with the conventional motor. The motor can be applied to a motor with a capacitor directly connected to a gear mechanism such as a transmission.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: August 20, 1996
    Assignee: Oriental Motor Co., Ltd.
    Inventors: Takao Iwasa, Takaji Kambayashi
  • Patent number: 5045185
    Abstract: A blood separator having: a blood bag pressurizing section for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; a retention/measurement section for retaining at least two separation bags connecting with the blood bag via tubes and capable of receiving separated blood components, and measuring the weight of the separation bags; limiting devices provided at intermediate portions of the tubes between the blood bag and the separation bags to limit the flows of liquids in the tubes; a detector for detecting the level of an interface between components of blood in the blood bag retained in the blood bag pressurizing section; a moving device for moving the detector relative to the blood bag; and a controller for controlling the limiting devices while receiving, as an item of control information, detection information from the detector and/or measurement information from the retention/measurement section.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: September 3, 1991
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yukihiro Ohnaka, Takao Iwasa, Tatsumiko Kawaoka