Patents by Inventor Mutsumi Shibuya
Mutsumi Shibuya 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).
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Patent number: 9408969Abstract: Provided is an anesthetic solution-filled cartridge-type electric dental syringe, wherein the plunger has been shortened but the plunger can nevertheless be extended to the distance necessary to evacuate the anesthetic solution from the cartridge. The syringe comprises: an extension tube into which a plunger is movably inserted, the extension tube being movably disposed in the through hole of a support block and having racks formed in the side surface thereof that are coordinated with the racks of the plunger; and a means for the plunger to draw the extension tube to engage the racks of the extension tube with a pinion when the plunger reaches the middle of the distance corresponding to the anesthetic solution accommodation length of the cartridge. By the engagement of the racks of the extension tube with the pinion, the plunger moves together with the extension tube for the remainder of the distance corresponding to the anesthetic solution accommodation length of the cartridge.Type: GrantFiled: December 27, 2010Date of Patent: August 9, 2016Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Fumio Tanaka, Mitsuhiro Haraguchi, Yoshihiko Kawasaki, Mutsumi Shibuya, Renji Hayashi, Yoshinori Kato, Akiko Kawasaki
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Patent number: 8840585Abstract: A motorized syringe for use with two types of dental anesthetic solution-filled cartridges, having a plunger plug in the 1.8 ml cartridge pushed by a push rod by a length required to push a plunger plug in the 1.0 ml cartridge. The syringe includes a cartridge holder for use with 1.0 ml and 1.8 ml cartridges, the push rod having a 1.0 ml position and a 1.8 ml position drawn back from the 1.0 ml position so that push rod movement can end at a common terminal position for both, a sleeve adapted to receive the push rod rear end when pushed back from the common terminal position, and to be not interfered with by the push rod's rear end when it is in the 1.0 ml position, the sleeve being pushed rearward with the push rod's rear end when pushed back to the 1.8 ml position.Type: GrantFiled: April 12, 2011Date of Patent: September 23, 2014Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Fumio Tanaka, Mitsuhiro Haraguchi, Mutsumi Shibuya, Renji Hayashi, Yoshinori Kato, Akiko Kawasaki
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Publication number: 20140023986Abstract: A motorized syringe for use with two types of dental anesthetic solution-filled cartridges, having a plunger plug in the 1.8 ml cartridge pushed by a push rod by a length required to push a plunger plug in the 1.0 ml cartridge. The syringe includes a cartridge holder for use with 1.0 ml and 1.8 ml cartridges, the push rod having a 1.0 ml position and a 1.8 ml position drawn back from the 1.0 ml position so that push rod movement can end at a common terminal position for both, a sleeve adapted to receive the push rod rear end when pushed back from the common terminal position, and to be not interfered with by the push rod's rear end when it is in the 1.0 ml position, the sleeve being pushed rearward with the push rod's rear end when pushed back to the 1.8 ml position.Type: ApplicationFiled: April 12, 2011Publication date: January 23, 2014Applicant: Showa Yakuhin Kako Co., Ltd.Inventors: Fumio Tanaka, Mitsuhiro Haraguchi, Mutsumi Shibuya, Renji Hayashi, Yoshinori Kato
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Patent number: 8568141Abstract: A linear cartridge-type motorized dental syringe has a plunger rod aligned with a drive shaft of a motor, the externally threaded plunger rod movable longitudinally, but not rotatably, relative to the casing, a cylindrical body rotated by the shaft, a nut having arm-like nut halves with internal threads engaging external threads on the rod, a locking ring for rotation around an axis of the rod and for longitudinal movement between a rearward position where the ring forces the threads on the nut halves to engage the threads on the rod, and forward where the ring releases engagement of the threads, pusher pins for moving the ring rearward when the cartridge holder is inserted, and a spring for pushing the locking ring back to the forward position, with rotation of the cylinder body resulting in rotative motion of the nut around the rod to move it forward.Type: GrantFiled: June 26, 2009Date of Patent: October 29, 2013Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Fumio Tanaka, Mitsuhiro Haraguchi, Yoshihiko Kawasaki, Mutsumi Shibuya, Kiyoshi Wakabayashi, Yoshinori Katoh, Renji Hayashi
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Publication number: 20120088206Abstract: A linear cartridge-type motorized dental syringe has a plunger rod aligned with a drive shaft of a motor, the externally threaded plunger rod movable longitudinally, but not rotatably, relative to the casing, a cylindrical body rotated by the shaft, a nut having arm-like nut halves with internal threads engaging external threads on the rod, a locking ring for rotation around an axis of the rod and for longitudinal movement between a rearward position where the ring forces the threads on the nut halves to engage the threads on the rod, and forward where the ring releases engagement of the threads, pusher pins for moving the ring rearward when the cartridge holder is inserted, and a spring for pushing the locking ring back to the forward position, with rotation of the cylinder body resulting in rotative motion of the nut around the rod to move it forward.Type: ApplicationFiled: June 26, 2009Publication date: April 12, 2012Applicant: Showa Yakuhin Kako Co., Ltd.Inventors: Fumio Tanaka, Mitsuhiro Haraguchi, Yoshihiko Kawasaki, Mutsumi Shibuya, Kiyoshi Wakabayashi, Yoshinori Katoh, Renji Hayashi
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Patent number: 6582405Abstract: An electrically-driven dental injector used in orally injecting such an injection liquid as an anesthetic in dental treatment. Electrically-driven dental injectors includes one having a mechanism for disengaging a pinion (82) from a rack (48) in order to retract a plunger rod (44) upon completion of injection; however, it has heretofore been necessary to manually operate the operating part from outside each time. The inventive electrically-driven dental injector is so arranged that the plunger rod can be manually pushed back directly oupon completion of injection without requiring manual operation, and, to this end, the injector comprises a latch mechanism (84) for engaging/disengaging the ring gear (70) of a planetary reduction gear (50) with/from a casing (52), and an operating rod (94) extending through a support member (20) and functionally cooperating with the latch mechanism (84).Type: GrantFiled: May 7, 2001Date of Patent: June 24, 2003Assignees: Showa Yakuhin Kako Co., Ltd., Hios Inc.Inventors: Yukio Kawagishi, Fumio Tanaka, Mutsumi Shibuya, Ikuo Kitagawa, Renji Hayashi, Yoshinori Katoh
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Publication number: 20020077601Abstract: An electrically-driven dental injector used in orally injecting such an injection liquid as an anesthetic in dental treatment. Electrically-driven dental injectors includes one having a mechanism for disengaging a pinion (82) from a rack (48) in order to retract a plunger rod (44) upon completion of injection; however, it has heretofore been necessary to manually operate the operating part from outside each time. The inventive electrically-driven dental injector is so arranged that the plunger rod can be manually pushed back directly oupon completion of injection without reqiring manual operation, and, to this end, the injector comprises a latch mechanism (84) for engaging/disengaging the ring gear (70) of a planetary reduction gear (50) with/from a casing (52), and an operating rod (94) extending through a support member (20) and functionally cooperating with the latch mechanism (84).Type: ApplicationFiled: May 7, 2001Publication date: June 20, 2002Inventors: Yukio Kawagishi, Fumio Tanaka, Mutsumi Shibuya, Ikuo Kitagawa, Renji Hayashi, Yoshinori Katoh, Kayoko Kawagishi, Masayuki Kawagishi, Youko Kawasaki
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Patent number: 5955352Abstract: An instrument for chemical and microbiological tests comprises a sample container for temporarily storing a liquid sample; a plurality of sample-holding portions formed on the bottom face of the sample container; and a liquid-absorbent body capable of coming in contact with the liquid sample so that the body can absorb the excess sample, when the liquid sample is introduced into the container, while retaining the sample to be held on the sample-holding portions. This instrument can be used in a chemical or microbiological test wherein a sample is used in a relatively small amount and, in particular, those requiring a large number of reactions and cultivation. Moreover, the instrument does not require the dispensation of a sample to each reaction system and does not cause any scatter of the sample in the surroundings.Type: GrantFiled: June 20, 1997Date of Patent: September 21, 1999Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Yoshiharu Inoue, Yuichi Kinoshita, Mutsumi Shibuya, Kiyoshi Oguchi, Hiroshi Yamada, Chizuko Ohshina, Masaho Hayashi
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Patent number: 5236496Abstract: Paste compositions comprising from 20 to 60% by weight of an alkaline-earth metal hydroxide selected from the group consisting of calcium hydroxide, magnesium hydroxide, strontium hydroxide, and the mixture threreof; from 20 to 60% by weight of a polyhydric alcohol; from 0.5 to 5% by weight of an alkali-soluble cellulose derivative; and from 5 to 20% by weight of water based on the total weight of the composition are disclosed. Also disclosed are a method for preparing the same; a medicament useful for pulpotomy, medicament for stimulating the formation of osteoid scar; and a method for pulpotomy and a method for osteosis comprising the step of applying the above composition.Type: GrantFiled: June 13, 1991Date of Patent: August 17, 1993Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Mutsumi Shibuya, Satomi Ishii
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Patent number: 4962043Abstract: A simplified detection implement for use in the biological or chemical tests such as medical, pharmaceutical, microbiological, enzymological or analytical tests comprising an adhesive sheet (1) having an adhesion material layer (4), the adhesion sheet (1) also having an area "a" in an optimal shape and an area "b" in an optimal shape with a folding line (6) at the border of areas "a" and "b"; a small test material (3) adhered to the adhesion material layer (4) and being placed approximately at the center of area "a" of the adhesive sheet (1); and a peelable protection sheet (2) covering the surface of the adhesion material layer (4) and having an opening (5) big enough to expose the whole surface of the small test material (3) as well as being so positioned to expose the small test material (3) when areas "a" and "b" are overlapped by folding the adhesive sheet (1) at the folding line (6), and when areas "a" and "b" being overlapped the majority or part of area "a" of the adhesive sheet (1) acts as the adhesiType: GrantFiled: April 3, 1989Date of Patent: October 9, 1990Assignees: Showa Yakuhin Kako Co., Ltd, Nitto Electric Industrial Co., Ltd.Inventors: Moriharu Nagase, Mutsumi Shibuya, Kuniaki Asami, Katsuo Matsumoto, Hikaru Teranishi, Sukeo Saito
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Patent number: 4582795Abstract: A method and device for rapid diagnosis of dental caries are provided in which a very small amount of saliva to be tested is impregnated into a test piece containing a dry reagent. The test piece is supported on a coating film, whereby the test piece can be maintained with the air intercepted to prevent evaporation of saliva for about 15-30 minutes at a temperature around 20.degree.-37.degree. C., and a color change of the reagent due to the enzymatic reaction of the dental caries-causing microorganism is examined.Type: GrantFiled: June 17, 1983Date of Patent: April 15, 1986Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Mutsumi Shibuya, Kiyoyuki Matsumoto
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Patent number: D449693Type: GrantFiled: June 27, 2000Date of Patent: October 23, 2001Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Mutsumi Shibuya, Yukio Kawagishi, Fumio Tanaka