Patents Assigned to GC Corporation
-
Publication number: 20090122638Abstract: To provide mixing elements of a Kenix type static mixer capable of decreasing fluids remaining wastefully in a casing without elongation of the casing, the mixing elements are arranged in a casing so that end parts adjacent in an axial direction are connected to cross almost orthogonally, the mixing element includes a partition wall part (1) in a thin flat plate shape for partitioning the casing into approximately equal cross sectional areas, and plural spiral blade parts (2, . . . ) having a shape of a thin plate twisted by approximately 180 degrees, and being positioned in spaces partitioned by the partition wall part (1), wherein outer peripheries of the spiral blade parts (2, . . . ) at the partition wall part (1) side are integrally contacted with the partition wall part (1), and outer peripheries of the spiral blade parts (2, . . . ) at the casing side are contacted with an inner wall of the casing.Type: ApplicationFiled: November 7, 2008Publication date: May 14, 2009Applicant: GC CorporationInventors: Kimihiko Sato, Masaaki Kaneko, Koichi Mamada
-
Publication number: 20090084227Abstract: For accurate holding, easy attachment and detachment, and sufficient rotation force, a rotary tool has a holding and transmitting part 1 to hold a hexagonal column of a rotated body and give rotation force, comprising a recessed part 2, which has an inner face having an approximately regular triangle cross sectional shape, run-off parts 2a at corners of the triangle shape, and a uniform shape in depth direction, and plate springs 3, which are fixed at a bottom of the recessed part 2 and have pawl parts 3a at tips thereof positioned at the opening side of the recessed part 2, and the pawl parts 3a can be moved into the run-off parts 2a while contacting to three side faces of the hexagonal column H and generate spring force, when the hexagonal column H is inserted into the recessed part 2.Type: ApplicationFiled: September 9, 2008Publication date: April 2, 2009Applicant: GC CorporationInventors: Yoshihiro SAKAGUCHI, Naoto Fujii, Ryosuke Ikeya
-
Publication number: 20090087815Abstract: To provide a dental implant abutment which is attached on the oral cavity inner side of an implant fixture embedded in a jawbone to be an artificial tooth root and pierces a gingiva so as to be a base of an upper structural body in a dental implant treatment to recover a lost oral cavity function of a lost tooth, and which does not remarkably lose aesthetic property when a patient subjected to the dental implant treatment suffers a retraction of gingiva according to bone absorption, the dental implant abutment is made of a ceramic added with a pigment and sintered so as to wholly have a similar color to that of the gingiva, where the similar color to that of the gingiva has L* of 60 to 85, a* of 9 to 20, and b* of ?5 to 9 in an index of a color system of L*a*b*.Type: ApplicationFiled: September 15, 2008Publication date: April 2, 2009Applicant: GC CorporationInventors: Takaaki OYAMA, Fumiya Sato
-
Publication number: 20090053671Abstract: To provide a chewing evaluation method capable of easily measuring chewing by an easy method without using a special expensive apparatus, together with a chewing determination kit, the chewing determination kit comprises testing food which contains ascorbic acid, an ascorbic acid derivative, and/or ethanol as detection components, and an indicator reacted with the components, based on a fact that there appears a difference in a leaching out state of components for chewing determination depending on a chewing degree when testing food containing the components for chewing determination is used as a factor which is necessary for chewing determination in a wide sense but lacks in the conventional chewing determination method.Type: ApplicationFiled: August 13, 2008Publication date: February 26, 2009Applicant: GC CorporationInventors: Masao ABIRU, Shinichi Kato
-
Patent number: 7494539Abstract: To make a color tone similar to that of dentin of a tooth at a low cost without discoloration when baking, a dental ceramics material is produced by: mixing a pink coloring agent and a yellow coloring agent with zirconium oxide containing a stabilizer while having a mixing ratio of 0.001 to 5 wt. % respectively; and baking it, where the pink coloring agent is obtained by dissolving manganese oxide in aluminum oxide as a solid solution, the yellow coloring agent is obtained by dissolving vanadium oxide in zirconium oxide as a solid solution, the zirconium oxide contains 0.1 to 30 wt. % aluminum oxide if necessary, the stabilizer is one or more kinds selected from a group including yttrium oxide, magnesium oxide, calcium oxide, and cerium oxide, and the content thereof is preferably 3 to 7 wt. %.Type: GrantFiled: January 29, 2007Date of Patent: February 24, 2009Assignee: GC CorporationInventors: Keisuke Ikushima, Shuji Aoyagi
-
Publication number: 20090029636Abstract: To provide a stopper for a cutting tool capable of getting a correct depth required in a medical treatment field, even if a few kinds of a cutting tool are available, without preparing a many cutting tools, the stopper for a cutting tool is fitted to a rotary shaft of a cutting tool having the rotary shaft, the stopper includes a locking member which has a through hole contacting to the rotary shaft of the cutting tool, a clamping member which is made of a shape memory material, provided at the inner and/or outer side of the locking member and can deform the locking member by its recovering force, and a cutout part reaching to the through hole from an outer peripheral edge thereof in the longitudinal direction of the rotary shaft.Type: ApplicationFiled: July 25, 2008Publication date: January 29, 2009Applicant: GC CorporationInventors: Naoto Fujii, Masashi Takahashi, Koichi Mamada
-
Patent number: 7454843Abstract: A measured object mounting tool 2 for producing a three-dimensional shape data comprises a placing part 2b at the lower face of a cylindrical part 2a, an inclined part 2c at a boundary between the side face and the upper face of the cylindrical part 2a, and a pillar part 2d at the upper face of the cylindrical part 2a, where the pillar part 2d has a mounting part 2e at the upper face thereof, a three-dimensional coordinate other than the engaging portion 3a of a model 3 is produced by engaging the model of the dental prosthesis with the mounting part 2e of the tool 2 on a placing table 1; detecting a position where a received light amount is remarkably decreased to by a laser sensor detect a lower end of the inclined part 2c; and thereby calculating an upper end of the engaging portion 3a.Type: GrantFiled: October 27, 2005Date of Patent: November 25, 2008Assignee: GC CorporationInventors: Yoshinori Matsuda, Yuki Sakamoto, Yoshinori Ebihara
-
Patent number: 7456246Abstract: A hydrophilic polyorganosiloxane composition comprising (A) a curable organopolysiloxane containing at least 5 mol % of diphenylsiloxane units or at least 10 mol % of methylphenylsiloxane units, (B) a curing agent, and (C) a specific polyether cures into an elastomeric or gel-like silicone product having excellent hydrophilic properties and prevents separation of the polyether over time.Type: GrantFiled: December 1, 2003Date of Patent: November 25, 2008Assignees: GC Corporation, Shin-Etsu Chemical Co., Ltd.Inventors: Hiroshi Kamohara, Toshiyuki Ozai
-
Publication number: 20080283432Abstract: To accurately fix and prevent to damage a fixture, a housing container for a fixture includes a housing main body 1 made of titanium, a titanium alloy, or glass and a cap 2 made of resin, the fixture X has an engaging hole Xa for an abutment having a larger cross section than that of a female screw part, the cap 2 which is fitted to an outer peripheral part at the fixture insert port side of the housing main body 1 has a stopper part 2a contacting with an upper face of the housing main body 1, and a rod 3 made of titanium or a titanium alloy at the inner side of the cap 2, and the rod 3 is inserted into the engaging hole Xa and/or contacted with an upper face Xb of the fixture X to prevent movement of the fixture X.Type: ApplicationFiled: May 14, 2008Publication date: November 20, 2008Applicant: GC CorporationInventors: Masashi TAKAHASHI, Shinichiro Hanada, Yasuhiro Suzuki
-
Patent number: 7445793Abstract: The present invention provides a scaffold in which cells can be stably retained and grafted in a uniform distribution state in the culture, preferable proliferation ability and viability can be secured, and particularly in the case of cartilage, fixation treatment such as suture can be carried out in the transplantation into affected parts after the culture, and the mechanical strength is provided sustainable for (weighted) compression at the initial stage of transplantation. The present invention relates to a 3-dimensional porous scaffold for tissue regeneration which comprises a structure composed of vertically long-shaped pores having a pore diameter of not less than 10 ?m to not more than 500 ?m and pore length of not less than 20 ?m to not more than 1 cm being juxtaposedly arranged obtained by a production process comprising rapid freeze-drying as a key technology.Type: GrantFiled: September 9, 2003Date of Patent: November 4, 2008Assignees: Kaneka Corporation, GC Corporation, Natl. Inst. of Adv. Ind. Science & Tech.Inventors: Hideo Niwa, Takeshi Fukuchi, Ichiro Shimizu, Masao Sato, Akiko Nishi, Kenji Yamashita, Tadashi Kaneko, Hajime Ohgushi, Koji Hattori, Kota Uematsu
-
Patent number: 7442246Abstract: In order to produce a dental cast product having the flat surface, by blending a dispersant with a phosphate-based investing material to improve the dispersability of an aggregate powder and a binder powder so as to prevent a agglomeration of the aggregate powder and the binder powder thereby forming a wall surface of an cavity in a mold to be flat, and also to make more various kinds of powders available for the aggregate powder without restriction to quartz, cristobalite and tridymite, the phosphate-based dental investing material comprising a mixed powder including an aggregate powder and a phosphate-based binder powder, and a liquid, with an alkaline metal salt of phosphoric acid being added to at least one of the mixed powder and the liquid.Type: GrantFiled: June 11, 2007Date of Patent: October 28, 2008Assignee: GC CorporationInventors: Fuminobu Kubo, Shinko Sato, Takayuki Ueno, Haruhiko Horiuchi
-
Publication number: 20080260652Abstract: An objective of the present invention is to provide a composition for dyeing dental plaque for evaluation of dental caries activity that is capable of simultaneously dyeing dental plaque and evaluating dental caries activity, and which can evaluate thick dental plaque more accurately than the conventional technique. The composition for dyeing dental plaque for evaluation dental caries activity comprises: a blue pigment being dissolved in water and having a color tone not changing at pH 7 or less; a red pigment being dissolved in water at pH more than 4.5 but not dissolved in water at pH 4.5 or less, and having a color tone not changing at pH 4.5 or less; and sugar. The content of sugar is preferably 1 to 50 weight parts to the total of 1 weight part of contents of the blue pigment and the red pigment, and ratio of contents of the blue pigment and the red pigment is preferably 1:3 to 3:1.Type: ApplicationFiled: June 20, 2008Publication date: October 23, 2008Applicant: GC CorporationInventors: Laurence J. Walsh, Ryoko Ota, Sayaka Nagao, Takuya Sato
-
Publication number: 20080255266Abstract: For easier removal after X-ray imaging, simple application, and excellent X-ray imaging properties, a dental paste composition having X-ray imaging property comprises: (a) 3 to 25 wt % of polyhydric alcohol; (b) 0.5 to 10 wt % of a powdery high polymer material dissolved and swelled in the polyhydric alcohol and water; (c) 10 to 30 wt % of water; and (d) 25 to 80 wt % of a powdery X-ray imaging material, the total weight of the polyhydric alcohol (a) and water (c) is 3 to 25 times of the weight of the powdery high polymer material (b), and the composition can be added with (e) 0.01 to 5 wt % of a fluorine compound, and (f) 15 wt % or less of an additive which is one or more kinds selected from a cushion material, a sweetener, a colorant, a preservative, an antiseptic agent, a fungicide, a pH regulator, an expander, and a perfume.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Applicant: GC CorporationInventors: Laurence J. WALSH, Shinichi Kato, Shuji Kariya, Takuya Sato
-
Publication number: 20080253975Abstract: An objective of the present invention is to provide a composition for dyeing dental plaque for evaluation of dental caries activity that is capable of simultaneously dyeing dental plaque and evaluating dental caries activity, and which can evaluate thick dental plaque more accurately than the conventional technique. The composition for dyeing dental plaque for evaluation dental caries activity comprises: a blue pigment being dissolved in water and having a color tone not changing at pH 7 or less; a red pigment being dissolved in water at pH more than 4.5 but not dissolved in water at pH 4.5 or less, and having a color tone not changing at pH 4.5 or less; and sugar. The content of sugar is preferably 1 to 50 weight parts to the total of 1 weight part of contents of the blue pigment and the red pigment, and ratio of contents of the blue pigment and the red pigment is preferably 1:3 to 3:1.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Applicant: GC CorporationInventors: Laurence J. Walsh, Ryoko Ota, Sayaka Nagao, Takuya Sato
-
Publication number: 20080249205Abstract: To provide a silicone composition which does not adhere on a set material mainly including silicone, such as a silicone impression material used in the dental operation field, when being built on the set material mainly including silicone, the silicone composition includes (A) 100 weight parts of organopolysiloxane having at least two aliphatic unsaturated hydrocarbons in one molecule, (B) 0.1 to 50 weight parts of organohydrogenpolysiloxane having at least three hydrogen atoms, which directly bond to a silicon atom, in one molecule and including SiO2 units, (C) 0.1 to 50 weight parts of fine silica powder having a BET specific surface area of 50 to 500 m2/g and being subjected to a hydrophobic treatment on the surface thereof, and 10 to 800 ppm of a silicone-soluble platinum compound with respect to 100 weight parts of the total of the (A) and (B) components.Type: ApplicationFiled: March 28, 2008Publication date: October 9, 2008Applicant: GC CorporationInventor: Hiroshi KAMOHARA
-
Publication number: 20080241794Abstract: To provide a method for producing an implant bridge with zirconia having excellent strength and aesthetic property, so that a zirconia-made implant bridge can be produced with high accuracy by easily processing, the production method of a zirconia-made implant bridge includes the steps of producing a semi-sintered body, producing a precursor of an implant bridge by milling the semi-sintered body, completely sintering the precursor of the implant bridge, and milling to process the completely sintered precursor of the implant bridge to make a fitting part, where a fixture or an abutment is fitted, and/or a through hole for a fastening screw.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Applicant: GC CorporationInventors: Shuntaro Urata, Yuki Sakamoto
-
Publication number: 20080242756Abstract: To provide a dual curing type composite resin for core build-up having improved curing property by chemical polymerization with improved mechanical strength of a cured body under the condition of no light irradiation and with a shortened setting time, the composite resin is composed of a first component including a (meth)acrylate polymerizable resin and an organic peroxide, and a second component including (meth)acrylate polymerizable resin and a reducing agent, a photopolymerizaton initiator and a filler are included in the first component and/or the second component, and oxide powder of a Group II element in the periodic table having an average particle diameter of 1 ?m or less is blended in the first component and/or the second component.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Applicant: GC CorporationInventors: Yugo KOSAKA, YUTAKA SHINOZAKI, Tomohiro KUMAGAI
-
Publication number: 20080241411Abstract: To provide a surface treatment method of titanium or a titanium alloy with a shortened time for deposition of apatite on a material surface after the treatment so that early-stage osseointegration can be expected, and with a higher effect to form a calcium layer than a conventional method using calcium chloride, titanium or a titanium alloy is contacted with a solution of calcium salt except calcium halide being dissolved or suspended.Type: ApplicationFiled: March 24, 2008Publication date: October 2, 2008Applicant: GC CorporationInventors: Kunio Ishikawa, Katsushi Yamamoto
-
Publication number: 20080240993Abstract: An objective of the present invention is to provide an immunochromatography test tool having high detection sensitivity without leakage of a test solution to a space formed between an edge of a test piece and edge of a lower cover, in an immunochromatography test tool utilizing an antigen-antibody reaction. The immunochromatography test tool includes an upper cover having a test solution dropping window and a test result detection window, a lower cover having a test piece setting guide, and a test piece housed between the upper cover and the lower cover. In the test tool, contact angles of inner surfaces of the upper and lower covers are 60° to 150° with respect to water. The inner surfaces of the upper and lower covers are preferably subjected to a water repellent treatment.Type: ApplicationFiled: March 25, 2008Publication date: October 2, 2008Applicant: GC CorporationInventors: Hiroki NAITO, Kinya NIHEI, Hijiri MASUDA, Atsushi TACHINO, Yoko ISHIHARA
-
Patent number: D583057Type: GrantFiled: February 7, 2008Date of Patent: December 16, 2008Assignee: GC CorporationInventors: Norio Kojima, Kiyoshi Watanabe
