Patents by Inventor Masaaki Orikasa
Masaaki Orikasa 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: 10321978Abstract: An orthodontic bracket is provided. The orthodontic bracket includes a base part; a bracket body mounted on the base part and having a retaining projection provided on an upper face thereof; a clip having a U-shaped cross-section, the clip being mounted on the bracket body and including an upper part along the upper face of the bracket body, a lower part along a lower face of the bracket body, a curved part therebetween, and an engaging hole provided in the upper part of the clip in a position that corresponds to a position of the retaining projection of the bracket body such that the retaining projection projects through the engaging hole when the clip is in an open position thereon; and an archwire slot in the upper face of the bracket body that extends perpendicular to a moving direction of the clip.Type: GrantFiled: January 30, 2018Date of Patent: June 18, 2019Assignee: TOMY INCORPORATEDInventors: Masaaki Orikasa, Shingo Katayose, Kosei Endo
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Publication number: 20180153655Abstract: An orthodontic bracket is provided. The orthodontic bracket includes a base part; a bracket body mounted on the base part and having a retaining projection provided on an upper face thereof; a clip having a U-shaped cross-section, the clip being mounted on the bracket body and including an upper part along the upper face of the bracket body, a lower part along a lower face of the bracket body, a curved part therebetween, and an engaging hole provided in the upper part of the clip in a position that corresponds to a position of the retaining projection of the bracket body such that the retaining projection projects through the engaging hole when the clip is in an open position thereon; and an archwire slot in the upper face of the bracket body that extends perpendicular to a moving direction of the clip.Type: ApplicationFiled: January 30, 2018Publication date: June 7, 2018Applicant: TOMY INCORPORATEDInventors: Masaaki ORIKASA, Shingo KATAYOSE, Kosei ENDO
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Patent number: 9901423Abstract: A bracket body 3 is fixed to a base part 2, and a clip 4 is mounted on the bracket body 3 so as to move. An archwire slot 5 is provided on an upper face of the bracket body 3. A guide groove 9 for guiding a lower extended part 42 of the clip 4 is formed on a lower face of the bracket body 3, and provided at a position below the archwire slot 5. In a state where the slot is closed, an end 45 of the lower extended part 42 does not pass through the bracket body 3 up to a side face at an opposite side to a curved part of the bracket body 3. It is possible to provide an orthodontic bracket which has a lower height and has less possibility that a clip may be detached.Type: GrantFiled: September 9, 2011Date of Patent: February 27, 2018Assignee: TOMY INCORPORATEDInventors: Masaaki Orikasa, Shingo Katayose, Kosei Endo
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Publication number: 20130171579Abstract: A bracket body 3 is fixed to a base part 2, and a clip 4 is mounted on the bracket body 3 so as to move. An archwire slot 5 is provided on an upper face of the bracket body 3. A guide groove 9 for guiding a lower extended part 42 of the clip 4 is formed on a lower face of the bracket body 3, and provided at a position below the archwire slot 5. In a state where the slot is closed, an end 45 of the lower extended part 42 does not pass through the bracket body 3 up to a side face at an opposite side to a curved part of the bracket body 3. It is possible to provide an orthodontic bracket which has a lower height and has less possibility that a clip may be detached.Type: ApplicationFiled: September 9, 2011Publication date: July 4, 2013Applicant: TOMY INCORPORATEDInventors: Masaaki Orikasa, Shingo Katayose, Kosei Endo
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Patent number: 7993132Abstract: A clip release tool with a first and second projection, for releasing a clip from a main bracket body of an orthodontic bracket while regulating movement or deformation of the clip, and a related method, and a method of attaching a clip to an orthodontic bracket main body using a clip release tool.Type: GrantFiled: June 26, 2008Date of Patent: August 9, 2011Assignee: Tomy IncorporatedInventors: Perry Opin, Shingo Katayose, Kousei Endo, Masaaki Orikasa, Tomohiko Kawasaki
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Publication number: 20090075227Abstract: A clip release tool with a first and second projection, for releasing a clip from a main bracket body of an orthodontic bracket while regulating movement or deformation of the clip, and a related method, and a method of attaching a clip to an orthodontic bracket main body using a clip release tool.Type: ApplicationFiled: June 26, 2008Publication date: March 19, 2009Applicant: TOMY INCORPORATEDInventors: Perry OPIN, Shingo Katayose, Kousei Endo, Masaaki Orikasa, Tomohiko Kawasaki
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Patent number: 7442039Abstract: An orthodontic bracket has a clip which is curved substantially in U-shape as covering at least one part of an opposite side to a base in an arch wire slot. Catching end portions which are provided at an upper end part of the clip may be caught to enable to creep under a cover portion supported by the bracket main body. The clip is formed at the upper end part thereof with a concave portion as a recess portion which enables to catch a clip release tool for releasing the clip.Type: GrantFiled: December 9, 2003Date of Patent: October 28, 2008Assignee: Tomy IncorporatedInventors: Perry Opin, Shingo Katayose, Kousei Endo, Masaaki Orikasa
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Patent number: 6887075Abstract: An orthodontic appliance comprises a base, a main body equipped on one side of the base, an archwire slot furnished to the main body, a convertible cap closing the archwire slot along the length direction, and stepwise portions provided at ends of the archwire slot for receiving ends of the convertible cap. The convertible cap is fixedly soldered with a silver soldering material containing Ag 90% or more.Type: GrantFiled: December 5, 2002Date of Patent: May 3, 2005Assignee: Tomy IncorporatedInventors: Kozo Kawaguchi, Kenji Nagase, Kiyoshi Shiga, Masaaki Orikasa
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Patent number: 6843651Abstract: An orthodontic bracket enabling to securely maintain positive pressure of an archwire effecting to the bottom of an archwire slot even if doing the rotational control more than a determined amount. The orthodontic bracket has a base, a main body furnished on the base, an archwire slot formed in the main body, a guiding part crossing with the slot, and a band-like clip guided in the guiding part. A clip is curved in U-shape as covering at least one part of a reverse base side in the archwire slot, and a locking portion furnished at one end side in the length direction of the clip creeps under a cover portion supported by the main body. The locking claw formed in the locking portion and a covering claw formed in the cover portion get over and engage each other.Type: GrantFiled: February 28, 2002Date of Patent: January 18, 2005Assignee: Tomy IncorporatedInventor: Masaaki Orikasa
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Publication number: 20040214127Abstract: A dental article is formed by a polymer material obtained by the polymerization of at least a cycloolefin. A process for the surface modification of a dental article formed by a polymer material obtained by the polymerization of at least a cycloolefin, comprises applying a graft polymerization initiator over the surface of the dental article, supplying a reactive monomer onto the coated surface of the article, and then subjecting the coat to graft photopolymerization.Type: ApplicationFiled: April 28, 2004Publication date: October 28, 2004Applicant: TOMY INCORPORATEDInventors: Masao Kubo, Masaaki Orikasa
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Publication number: 20040166458Abstract: An orthodontic bracket has a clip which is curved substantially in U-shape as covering at least one part of an opposite side to a base in an arch wire slot. Catching end portions which are provided at an upper end part of the clip may be caught to enable to creep under a cover portion supported by the bracket main body. The clip is formed at the upper end part thereof with a concave portion as a recess portion which enables to catch a clip release tool for releasing the clip.Type: ApplicationFiled: December 9, 2003Publication date: August 26, 2004Applicant: TOMY INCORPORATEDInventors: Perry Opin, Shingo Katayose, Kousei Endo, Masaaki Orikasa
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Patent number: 6776613Abstract: An orthodontic bracket has a front side part, a bump portion, an inner side part which are formed on a ceiling face of a guide portion in such a manner that the front side part, the bump portion, the inner side part are formed in order in a guiding direction to which a clip is guided by the guide portion. The orthodontic bracket further has a sliding-rotation supporter provided at the lower end of the clip. When the sliding-rotation supporter slides on the ceiling face and gets over the bump portion from the front side part to reach the inner side part of the ceiling face, the clip can press the archwire down toward the bottom of the archwire slot.Type: GrantFiled: August 26, 2002Date of Patent: August 17, 2004Assignee: Tomy IncorporatedInventor: Masaaki Orikasa
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Publication number: 20040002033Abstract: An orthodontic appliance comprises a base, a main body equipped on one side of the base, an archwire slot furnished to the main body, a convertible cap closing the archwire slot along the length direction, and stepwise portions provided at ends of the archwire slot for receiving ends of the convertible cap. The convertible cap is fixedly soldered with a silver soldering material containing Ag 90% or more.Type: ApplicationFiled: December 5, 2002Publication date: January 1, 2004Inventors: Kozo Kawaguchi, Kenji Nagase, Kiyoshi Shiga, Masaaki Orikasa
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Patent number: 6644968Abstract: An orthodontic appliance comprising a main body for orthodontic treatment and a bonding base connected to the main body and capable of adhering to the teeth, wherein the main body and the bonding base each comprise calcium phosphate crystallizing glass. The calcium phosphate crystallizing glass preferably comprises CaO 10 to 60 wt %, P2O5 25 to 85 wt %, Al2O3 5 to 25 wt % and Li2O 0.01 to 5 wt %, and has Vickers hardness Hv based on JIS Z2244 of 4.5 GPa or lower, and bending strength based on JIS R1601 of 100 MPa or higher.Type: GrantFiled: February 5, 2002Date of Patent: November 11, 2003Assignee: Tomy IncorporatedInventors: Masaaki Orikasa, Seiji Kihara, Makoto Mitsudo, Mitsuhiro Matsushima
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Publication number: 20030039938Abstract: An orthodontic bracket has a front side part, a bump portion, an inner side part which are formed on a ceiling face of a guide portion in such a manner that the front side part, the bump portion, the inner side part are formed in order in a guiding direction to which a clip is guided by the guide portion. The orthodontic bracket further has a sliding-rotation supporter provided at the lower end of the clip. When the sliding-rotation supporter slides on the ceiling face and gets over the bump portion from the front side part to reach the inner side part of the ceiling face, the clip can press the archwire down toward the bottom of the archwire slot.Type: ApplicationFiled: August 26, 2002Publication date: February 27, 2003Applicant: TOMY INCORPORATEDInventor: Masaaki Orikasa
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Publication number: 20020168601Abstract: An orthodontic appliance comprising a main body for orthodontic treatment and a bonding base connected to the main body and capable of adhering to the teeth, wherein the main body and the bonding base each comprise calcium phosphate crystallizing glass. The calcium phosphate crystallizing glass preferably comprises CaO 10 to 60 wt %, P2O5 25 to 85 wt %, Al2O3 5 to 25 wt % and Li2O 0.01 to 5 wt %, and has Vickers hardness Hv based on JIS Z2244 of 4.5 GPa or lower, and bending strength based on JIS R1601 of 100 MPa or higher.Type: ApplicationFiled: February 5, 2002Publication date: November 14, 2002Applicant: TOMY INCORPORATEDInventors: Masaaki Orikasa, Seiji Kihara, Makoto Mitsudo, Mitsuhiro Matsushima
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Publication number: 20020150857Abstract: An orthodontic appliance may easily be recognized by a sort and a tooth mark, and trace to confirm the history of material and the production process. The appliance has a production lot number indicated at the part thereof, and further, the sort and the tooth mark indicated at an easily recognizable place thereof.Type: ApplicationFiled: March 28, 2002Publication date: October 17, 2002Applicant: TOMY INCORPORATEDInventors: Masaaki Orikasa, Mikio Mottate, Harumi Mottate, Charles J. Schultz
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Publication number: 20020119414Abstract: An orthodontic bracket enabling to securely maintain positive pressure of an archwire effecting to the bottom of an archwire slot even if doing the rotational control more than a determined amount. The orthodontic bracket has a base, a main body furnished on the base, an archwire slot formed in the main body, a guiding part crossing with the slot, and a band-like clip guided in the guiding part. A clip is curved in U-shape as covering at least one part of a reverse base side in the archwire slot, and a locking portion furnished at one end side in the length direction of the clip creeps under a cover portion supported by the main body. The locking claw formed in the locking portion and a covering claw formed in the cover portion get over and engage each other.Type: ApplicationFiled: February 28, 2002Publication date: August 29, 2002Applicant: TOMY INCORPORATEDInventor: Masaaki Orikasa
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Patent number: 6368105Abstract: An orthodontic bracket has a locking member, one side of which is formed as a base side portion located on a base side and extending along the base, and the other side of which is formed as a counter base side portion having substantially the same width as the length of an arch wire slot 5 and extending on an upper side of the slot. The locking member is formed of an elastic member in which a notched portion is provided substantially in a center of the base side portion. Further, a bracket body has a closing stop groove formed at an open edge portion of the arch wire slot so as to stop a tip of the locking member in a slot closed position as well as an open stop concavity formed at an edge portion thereof located away from the stop groove so as to stop the tip of the locking member in a slot open position. A rib is formed in a longitudinally central portion of the stop groove in such a manner as to project so as to bury the stop groove in correspondence with the notched portion.Type: GrantFiled: October 6, 2000Date of Patent: April 9, 2002Inventors: John C. Voudouris, Masaaki Orikasa
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Patent number: 6241516Abstract: In an orthodontic device, a main body (1) has an opening (1a) formed to permit detachable passage of a principal wire and a flange (2) formed in a mesiodistal direction so that the device is fixed via said extension flange (2) to an band to be fitted over the crown of molar. The width (W) of the extension flange (2) in an occluso-gingival direction is made greater than the width (B) of said main body (1) in the same direction.Type: GrantFiled: July 27, 1999Date of Patent: June 5, 2001Assignee: Tomy IncorporatedInventors: Masaaki Orikasa, Yasushi Watanabe