Patents by Inventor Daizaburo Mori
Daizaburo Mori 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: 11752073Abstract: An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 ?m or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 ?m or less is 40 to 55 volume %, and the content of particles having a particle diameter of 30 ?m or less is 55 to 75 volume %.Type: GrantFiled: October 24, 2018Date of Patent: September 12, 2023Assignee: GC CorporationInventors: Daizaburo Mori, Kenji Kojima, Masatoshi Yoshinaga
-
Publication number: 20230099996Abstract: One aspect of the present invention is: a dental glass ionomer cement including a first agent containing an ionomer glass powder; and a second agent containing a polycarboxylic acid polymer and water, wherein the first agent further contains a water-soluble compound represented by general formula (1): where R1 is a hydrogen atom or a methyl group, X1 is —O— or —NH—, and L1 is an alkylene group, and a water-soluble compound represented by general formula (2): where R2 is a hydrogen atom or a methyl group, X2 is —O— or —NH—, L2 is an alkyleneoxy group, R3 is an n-valent organic group, m is an integer of 1 or more and 42 or less, and n is an integer of 2 or more and 6 or less.Type: ApplicationFiled: October 29, 2020Publication date: March 30, 2023Inventors: Ayaka ISHIDA, Koji TANAKA, Ayaka FUJIMOTO, Daizaburo MORI
-
Patent number: 11583376Abstract: A dental gypsum slurry includes water and a dental gypsum powder containing hemihydrate gypsum and a polycarboxylic acid salt-based water-reducing agent, wherein a powder-water ratio of the water to the dental gypsum powder is 0.24 to 0.50, and when the water and the dental gypsum powder being mixed are poured up to a height of 50 mm in a cylindrical mold having an inner diameter of 35 mm, which is vertically placed on a flat surface, and then, the cylindrical mold is pulled upward at 10 mm/s at 30 seconds after start of mixing so that a mixture spreads planarly, the diameter of the mixture is 141.4 mm or more.Type: GrantFiled: January 30, 2018Date of Patent: February 21, 2023Assignee: GC CORPORATIONInventors: Daizaburo Mori, Masatoshi Yoshinaga, Kenji Kojima, Kaori Watanabe, Tsukasa Kaneko
-
Publication number: 20220183788Abstract: A dental restorative set includes a glass ionomer cement and a composite resin, wherein the composite resin contains a (meth)acrylate having an acid group.Type: ApplicationFiled: January 15, 2020Publication date: June 16, 2022Inventors: Koji TANAKA, Daizaburo MORI
-
Publication number: 20220040048Abstract: A dental glass powder includes 15 to 40% by mass of zinc oxide (ZnO), 20 to 55% by mass of silicon oxide (SiO2), 6 to 20% by mass of aluminum oxide (Al2O3), 1 to 13% by mass of calcium oxide (CaO), and 1 to 19% by mass of fluorine (F).Type: ApplicationFiled: July 27, 2021Publication date: February 10, 2022Inventors: Ayaka FUJIMOTO, Takahiro MIYAKE, Ryosuke YOSHIMITSU, Enzo SHIDA, Toshihiro TAKAHASHI, Yasuyuki NAGANO, Koji TANAKA, Yusuke HOKII, Katsuhito KATO, Daizaburo MORI
-
Publication number: 20210206023Abstract: To provide a scale which makes it possible to adjust the temperature of a furnace so that a ceramic blank can be properly heated even if various conditions such as the combination of the used ceramic blank and investment, and the type and size of the furnace vary, the scale comprises: a scale part; and a base part, the scale part and the base part being formed of wax or resin, wherein the base part has a shape of protruding from part of the scale part, a size of the scale part is larger than that of the base part in a direction orthogonal to a protruding direction of the base part.Type: ApplicationFiled: June 29, 2017Publication date: July 8, 2021Applicant: GC CORPORATIONInventors: Tatsuya FUJIMOTO, Daizaburo MORI, Masatoshi YOSHINAGA, Takuya SATO, Go MASHIO, Hayato YOKOHARA, Tomohiro HOSHINO, Takahiro MIYAKE
-
Publication number: 20210085433Abstract: A dental gypsum slurry includes water and a dental gypsum powder containing hemihydrate gypsum and a polycarboxylic acid salt-based water-reducing agent, wherein a powder-water ratio of the water to the dental gypsum powder is 0.24 to 0.50, and when the water and the dental gypsum powder being mixed are poured up to a height of 50 mm in a cylindrical mold having an inner diameter of 35 mm, which is vertically placed on a flat surface, and then, the cylindrical mold is pulled upward at 10 mm/s at 30 seconds after start of mixing so that a mixture spreads planarly, the diameter of the mixture is 141.4 mm or more.Type: ApplicationFiled: January 30, 2018Publication date: March 25, 2021Applicant: GC CorporationInventors: Daizaburo Mori, Masatoshi Yoshinaga, Kenji Kojima, Kaori Watanabe, Tsukasa Kaneko
-
Publication number: 20210045975Abstract: An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 ?m or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 ?m or less is 40 to 55 volume %, and the content of particles having a particle diameter of 30 ?m or less is 55 to 75 volume %.Type: ApplicationFiled: October 24, 2018Publication date: February 18, 2021Inventors: Daizaburo MORI, Kenji KOJIMA, Masatoshi YOSHINAGA
-
Publication number: 20190142705Abstract: A method for kneading a dental gypsum powder is provided that includes putting the dental gypsum powder and water in a bottle, the dental gypsum powder containing gypsum hemihydrate and a polycarboxylate-based water reducing agent, contained at 0.05 parts by mass to 0.8 parts by mass with respect to 100 parts by mass of the gypsum hemihydrate, sealing the bottle, and shaking the bottle.Type: ApplicationFiled: April 20, 2017Publication date: May 16, 2019Applicant: GC CorporationInventors: Daizaburo MORI, Masatoshi YOSHINAGA, Kaori WATANABE
-
Publication number: 20190076223Abstract: A wax pattern surface-treating agent includes a solvent, boron nitride, and at least one surfactant selected from a group consisting of an anionic surfactant, a cationic surfactant, a non-ionic surfactant, and an amphoteric surfactant.Type: ApplicationFiled: March 7, 2017Publication date: March 14, 2019Inventors: Masatoshi YOSHINAGA, Daizaburo MORI, Takuya SATO, Go MASHIO, Tatsuya FUJIMOTO, Hayato YOKOHARA, Tomohiro HOSHINO, Takahiro MIYAKE
-
Publication number: 20190029785Abstract: Provided is a dental investment that is a dental phosphate-bonded investment including boron nitride at 0.1% to 5% by weight.Type: ApplicationFiled: January 5, 2017Publication date: January 31, 2019Inventors: Daizaburo MORI, Masatoshi YOSHINAGA, Go MASHIO, Tatsuya FUJIMOTO, Hayato YOKOHARA, Tomohiro HOSHINO, Takahiro MIYAKE
-
Publication number: 20170304034Abstract: Providing a surface treatment agent for a wax pattern containing solvent; boron nitride; and a surface-active agent.Type: ApplicationFiled: November 6, 2015Publication date: October 26, 2017Inventors: Daizaburo MORI, Emiko FUKUSHIMA, Tatsuya FUJIMOTO
-
Patent number: 9408783Abstract: Provided is a dental gypsum powder having flowability, setting time, and strength of a set material that are suitable for producing a dental model. The dental gypsum powder contains 100 parts by weight of gypsum hemihydrate, 2 to 4 parts by weight of gypsum dihydrate, from 0.5 to 3 parts by weight of potassium sulfate, from 0.05 to 0.8 parts by weight of a polycarboxylate water reducing agent, and not contain more than 0.3 parts by weight of other additives. It is preferred that the amount of the polycarboxylate water reducing agent is from 0.15 to 0.3 parts by weight per 100 parts by weight of gypsum hemihydrate, and the amount of the potassium sulfate is from 25% by weight to the same amount of the amount of the gypsum dihydrate.Type: GrantFiled: March 28, 2014Date of Patent: August 9, 2016Assignee: GC CORPORATIONInventors: Daizaburo Mori, Emiko Fukushima, Haruhiko Horiuchi
-
Publication number: 20160015605Abstract: The problem to be solved is to provide a dental gypsum powder capable of suppressing mixing of bubbles in a kneaded object while including a resin component. A dental gypsum powder includes 0.5 to 4 wt. % of a solid component included in acrylic polymer dispersion; and 0.001 to 0.2 wt. % of cyclic siloxane including 3 to 10 SiO(CH3)2 units. More preferably, it includes 1 to 3 wt. % of the solid component included in the acrylic polymer dispersion.Type: ApplicationFiled: March 12, 2014Publication date: January 21, 2016Inventors: Daizaburo MORI, Emiko FUKUSHIMA, Haruhiko HORIUCHI
-
Patent number: 9198837Abstract: The invention provides a dental gypsum-bonded investment material powder which can inhibit air bubbles from being generated in a mixed material, only by being mixed with water without using any special device or tool, and is easily mixed with the water. A specific siloxane is blended at a specific amount in relation to the dental gypsum-bonded investment material powder which includes an anionic surfactant and is excellent in a mold releasing action. In other words, the dental gypsum-bonded investment material powder is structured such as to have 0.001 to 0.2 weight % anionic surfactant, and 0.00001 to 0.0005 weight % cyclic siloxane having 3 to 10 SiO(CH3)2 units.Type: GrantFiled: September 26, 2013Date of Patent: December 1, 2015Assignee: GC CORPORATIONInventors: Daizaburo Mori, Emiko Fukushima, Haruhiko Horiuchi
-
Publication number: 20140296369Abstract: Provided is a dental gypsum powder having flowability, setting time, and strength of a set material that are suitable for producing a dental model. The dental gypsum powder contains 100 parts by weight of gypsum hemihydrate, 2 to 4 parts by weight of gypsum dihydrate, from 0.5 to 3 parts by weight of potassium sulfate, from 0.05 to 0.8 parts by weight of a polycarboxylate water reducing agent, and not contain more than 0.3 parts by weight of other additives. It is preferred that the amount of the polycarboxylate water reducing agent is from 0.15 to 0.3 parts by weight per 100 parts by weight of gypsum hemihydrate, and the amount of the potassium sulfate is from 25% by weight to the same amount of the amount of the gypsum dihydrate.Type: ApplicationFiled: March 28, 2014Publication date: October 2, 2014Applicant: GC CorporationInventors: Daizaburo MORI, Emiko Fukushima, Haruhiko Horiuchi
-
Publication number: 20140083326Abstract: The invention provides a dental gypsum-bonded investment material powder which can inhibit air bubbles from being generated in a mixed material, only by being mixed with water without using any special device or tool, and is easily mixed with the water. A specific siloxane is blended at a specific amount in relation to the dental gypsum-bonded investment material powder which includes an anionic surfactant and is excellent in a mold releasing action. In other words, the dental gypsum-bonded investment material powder is structured such as to have 0.001 to 0.2 weight % anionic surfactant, and 0.00001 to 0.0005 weight % cyclic siloxane having 3 to 10 SiO(CH3)2 units.Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicant: GC CORPORATIONInventors: Daizaburo MORI, Emiko Fukushima, Haruhiko Horiuchi
-
Publication number: 20070003494Abstract: For the purpose to preserve hydrogen peroxide stably for a long period of time, have excellent adhesion with keeping viscosity at about same level as that of the conventional material, give few damages to a tooth by pH, and have high efficiency of bleaching to tooth, a pasty dental bleaching material comprises 10-50 wt. % powdery hydrogen peroxide polyvinyl pyrrolidone complex blended in a liquid component, or comprises pasty first and second components, 10-50 wt. % powdery hydrogen peroxide polyvinyl pyrrolidone complex being blended in a liquid component in the first component and 0.01-10 wt. % catalyst for activating hydrogen peroxide and 1-70 wt. % thickener being blended in a liquid component in the second component.Type: ApplicationFiled: June 12, 2006Publication date: January 4, 2007Applicant: GC CorporationInventors: Daizaburo MORI, Shin Yamaguchi, Keisuke Ikushima
-
Publication number: 20050031552Abstract: To provide an urea peroxide based tooth whitening material that exerts high efficiency in bleaching teeth with less damages on teeth due to pH, is in the form of single paste, has good storage stability, and exerts high adhesiveness on a tooth surface, the tooth whitening material contains 1 to 20% by weight of magnesium sodium silicate, 10 to 25% by weight of urea peroxide, 40 to 88% by weight of a polyhydric alcohol, and 1 to 15% by weight of a thickener capable of being swelled with the polyhydric alcohol.Type: ApplicationFiled: June 16, 2004Publication date: February 10, 2005Applicant: GC CorporationInventors: Daizaburo Mori, Shin Yamaguchi, Keisuke Ikushima
-
Patent number: D617455Type: GrantFiled: July 30, 2008Date of Patent: June 8, 2010Assignee: GC CorporationInventors: Daizaburo Mori, Shin Yamaguchi, Masayuki Takayama