Patents Assigned to Maruo Calcium Company Limited
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Patent number: 8404619Abstract: A sparingly water-soluble plant quality improver characterized by containing a polyvalent metal, an organic acid having a carboxylic group, an alkali metal and/or ammonia, and phosphate ions and/or carbonate ions. The sparingly water-soluble plant quality improver inhibits or alleviates physiological disorders of plants and further has the function of improving qualities of the plants, such as sugar content and acidity. It is also characterized in that it causes little fruit surface soiling to heighten the merchandice value, and that it is lowly phytotoxic and highly safe.Type: GrantFiled: February 20, 2006Date of Patent: March 26, 2013Assignee: Maruo Calcium Company LimitedInventors: Naoki Kubota, Nobuhiro Taniguchi, Hisakazu Hojo
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Patent number: 8138253Abstract: A filler for powder coating materials is provided, which comprises inorganic parties having a Mohs hardness of 1 to 4 and satisfying the following particle size distribution of the following relationships (1) to (5): 2?A?30??(1); Cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [?m]; 0?B?35??(2); Cumulative undersize for one-half the cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [vol. %]; 1?C?25??(3); Value obtained by dividing cumulative 90 vol. % diameter determined by Microtrac FRA by cumulative 10 vol. % diameter [-]; 1?D?6??(4); Value obtained by dividing cumulative 75 vol. % diameter determined by Microtrac FRA by cumulative 25 vol. % diameter [-]; and E?100??(5); Maximum particle diameter in particle-diameter fraction frequency distribution determined by Microtrac FRA [?m].Type: GrantFiled: September 6, 2006Date of Patent: March 20, 2012Assignee: Maruo Calcium Company LimitedInventors: Takeshi Maeba, Nariatsu Uto, Takanobu Sakai
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Patent number: 7863367Abstract: A surface treated calcium carbonate in which calcium carbonate is surface treated with a fatty acid surface treatment agent satisfying the following equation (a), and the surface treated calcium carbonate satisfying the following equation (b) is provided: C12+C14 85(%)??(a) and Pv 90(%),??(b) C12 is a ratio of a fatty acid surface treatment agent having an alkyl group of 12 carbon atoms, C14 is a ratio of a fatty acid surface treatment agent having an alkyl group of 14 carbon atoms, and Pv is a ratio of a volume (vol. %) precipitated in hexane. The surface treated calcium carbonate of the present invention can provide the resin compositions having slip resistance and slump resistance with a good balance between them, especially the resin compositions having an excellent slip resistance.Type: GrantFiled: October 3, 2003Date of Patent: January 4, 2011Assignee: Maruo Calcium Company LimitedInventors: Yoichi Takahashi, Yuusuke Hayashi, Katsunori Fukumoto
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Patent number: 7785705Abstract: The flower thinning agent of the present invention comprises a preparation of a mixture of an inorganic compound of poor water solubility with an additive, satisfying the following relationships of (a) 0.03?P?30, (b) 3?Q?800, and (c) 0.5?Q/P?1000, wherein P: average particle diameter (?m) measured by SALD-2000A laser type particle size distribution meter, Q: BET specific surface area (m2/g) measured according to the nitrogen adsorption method. The flower thinning agent of the present invention is not harmful to a human body and has not only high adaptability to the deflection of spread timing, but also high flower thinning effect.Type: GrantFiled: August 1, 2003Date of Patent: August 31, 2010Assignee: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Hiroshi Shibata, Naoki Kubota, Nariatsu Uto, Toshio Fujiwara
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Publication number: 20090227720Abstract: A filler for powder coating materials is provided, which comprises inorganic parties having a Mohs hardness of 1 to 4 and satisfying the following particle size distribution of the following relationships (1) to (5): 2?A?30??(1); Cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [?m]; 0?B?35??(2); Cumulative undersize for one-half the cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [vol. %]; 1?C?25??(3); Value obtained by dividing cumulative 90 vol. % diameter determined by Microtrac FRA by cumulative 10 vol. % diameter [-]; 1?D?6??(4); Value obtained by dividing cumulative 75 vol. % diameter determined by Microtrac FRA by cumulative 25 vol. % diameter [-]; and E?100??(5); Maximum particle diameter in particle-diameter fraction frequency distribution determined by Microtrac FRA [?m].Type: ApplicationFiled: September 6, 2006Publication date: September 10, 2009Applicant: MARUO CALCIUM COMPANY LIMITEDInventors: Takeshi Maeba, Nariatsu Uto, Takanobu Sakai
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Patent number: 7341704Abstract: The surface-treated calcium carbonate is disclosed which is surface-treated with an organic surface treating agent, said surface-treated calcium carbonate satisfies the particular BET specific surface area (Sw), reduced heat amount per unit specific surface area (As), average pore diameter (Dxp) at which an increased amount of mercury penetration reaches the maximum value in a method of mercury penetration, and amount of an average pore diameter [maximum value of an increased amount of mercury penetration (Dyp)/average pore diameter (Dxp)]. The surface-treated calcium carbonate of the present invention is particularly useful for resins and it not only improves adhesion of resin compositions to a subject to be adhered, but forms a rigid coating film when blended into resins.Type: GrantFiled: November 1, 2002Date of Patent: March 11, 2008Assignee: Maruo Calcium Company LimitedInventors: Hidemitsu Kasahara, Yuusuke Hayashi, Yoichi Takahashi, Seiya Shimizu, Shigeo Takiyama, Katsunori Fukumoto
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Patent number: 7264834Abstract: A food additive slurry composition which comprises 100 parts by weight of at least one magnesium ingredient selected from the group consisting of magnesium hydroxide, magnesium silicate, magnesium oxide, magnesium phosphate and magnesium hydrogen phosphate, and 2 to 55 parts by weight of at least one emulsion stabilizer selected from the group consisting of polyglycerol fatty acid ester, gum arabic, processed starch, sucrose fatty acid ester having an HLB of 8 or higher, carboxymethyl cellulose (hereinafter, referred to as CMC), methyl cellulose (hereinafter, referred to as MC), propylene glycol alginate (hereinafter, referred to as PGA), water-soluble soybean polysaccharide, condensed phosphate, gum ghatti, phospholipid and arabino galactan is provided. The food additive composition can be highly concentrated and is excellent in flavor as well as dispersibility in liquid.Type: GrantFiled: September 19, 2001Date of Patent: September 4, 2007Assignee: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota
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Patent number: 7199173Abstract: An agglomerate comprising fine primary particles of an inorganic compound except for silica is provided, satisfying dp50: the average particle diameter [?m] of the agglomerate measured by Microtrac-FRA, a laser analysis type particle size distribution measurement apparatus, ?: the value calculated by dividing the difference between the particle diameter d90 of cumulative 90% minus sieve particles of the agglomerate and the particle diameter d10 of cumulative 10% minus sieve particles of the agglomerate calculated by the Microtrac-FRA, Sw: the BET specific surface area [m2/g] of the agglomerate, St: the tensile strength [MPa] required to break the agglomerate with the particle diameter 4 ?m, and, Sta: the tensile strength [MPa] required to break 30% of the particle diameter of the agglomerate with the particle diameter 4 ?m, both St and Sta being measured by a micro compression testing machine manufactured by Shimadzu Corporation.Type: GrantFiled: October 14, 2003Date of Patent: April 3, 2007Assignee: Maruo Calcium Company LimitedInventors: Seiya Shimizu, Hiroshi Shibata
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Patent number: 7041325Abstract: A food additive slurry or powder composition is disclosed which comprises 100 parts by weight of at least one selected from the group consisting of calcium carbonate, calcium phosphate and dolomite (A) and 0.5 to 60 parts by weight of arabinogalactan (B). The food additive slurry composition of the present invention is highly concentrated and excellent in dispersion stability in liquid, which can be effectively utilized for the enrichment of calcium and/or magnesium by adding to foods such as yogurt, cow's milk, juice, milk powder, instant noodles and biscuits.Type: GrantFiled: December 20, 2000Date of Patent: May 9, 2006Assignee: Maruo Calcium Company LimitedInventors: Naoki Kubota, Hisakazu Hojo
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Patent number: 6863910Abstract: An inorganic particles-containing additive composition is disclosed which contains a polyvalent metal, a phosphoric acid ion, an organic acid having a carboxyl group and an alkali metal, said composition satisfying the following requirements of (a) and (b): 70?X?90000??(a) X: Amount (mg/Kg) of the alkali metal contained in a solid content of the additive composition, 0.1?Y?15??(b) Y: Electric conductivity (mS/cm) when the additive composition is adjusted to a solid concentration of 10% by weight. The additive composition is excellent not only in dispersibility and storage stability in a liquid, but also in flavor.Type: GrantFiled: January 16, 2002Date of Patent: March 8, 2005Assignee: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota, Yoshimasa Morisaki
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Patent number: 6808726Abstract: A method for manufacturing a food additive slurry composition is disclosed which comprises preparing a precursor by mixing water, a polyvalent metal compound and an organic acid having a carboxyl group, then adding to the precursor a phosphoric acid source and an alkali metal by the specific method. The obtained food additive slurry composition is not only excellent in dispersibility, dispersion stability in liquid and flavor, but low in slurry viscosity and good in handling.Type: GrantFiled: December 4, 2001Date of Patent: October 26, 2004Assignee: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota, Yoshimasa Morisaki
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Patent number: 6663948Abstract: An additive for synthetic resins is provided which comprises composite particles obtained by depositing a calcium phosphate compound (R) on support particles (M) of a petaloid porous structure. The additive of the present invention provides synthetic resin compositions having excellent transparency, anti-scratch property, anti-blocking property and less discoloration caused by deterioration of resin.Type: GrantFiled: August 20, 2001Date of Patent: December 16, 2003Assignee: Maruo Calcium Company LimitedInventors: Shigeo Takiyama, Mitsunobu Aoyama, Hidemitsu Kasahara, Shiro Minayoshi
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Publication number: 20030118694Abstract: An inorganic particles-containing additive composition is disclosed which contains a polyvalent metal, a phosphoric acid ion, an organic acid having a carboxyl group and an alkali metal, said composition satisfying the following requirements of (a) and (b):Type: ApplicationFiled: January 16, 2002Publication date: June 26, 2003Applicant: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota, Yoshimasa Morisaki
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Publication number: 20030091695Abstract: A method for manufacturing a food additive slurry composition is disclosed which comprises preparing a precursor by mixing water, a polyvalent metal compound and an organic acid having a carboxyl group, then adding to the precursor a phosphoric acid sourse and an alkali metal by the specific method. The obtained food additive slurry composition is not only excellent in dispersibility, dispersion stability in liquid and flavor, but low in slurry viscosity and good in handling.Type: ApplicationFiled: December 4, 2001Publication date: May 15, 2003Applicant: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota, Yoshimasa Morisaki
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Patent number: 6482881Abstract: Disclosed is an inorganic dispersant having a high specific surface area and a high surface activity which comprises a calcium phosphate type compound having a specific particle composition, particle shape, particle size and dispersibility, and specific surface area. When used as a suspension polymerization stabilizer, it provides polymer particles having a uniform and sharp particle size distribution, and when the polymer particles are contained in an unsaturated polyester resin composition and a toner composition, the obtained compositions have excellent quality.Type: GrantFiled: October 4, 2000Date of Patent: November 19, 2002Assignee: Maruo Calcium Company LimitedInventors: Hiroshi Shibata, Yoichi Takahashi, Hidemitsu Kasahara, Mitsunobu Aoyama, Shigeo Takiyama
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Patent number: 6372832Abstract: A glycol dispersion of an inorganic powder is provided, which comprises glycol and an inorganic powder dispersed therein, said inorganic powder being surface-treated with a dispersant having a solubility of not less than 5 (g/100 g-water) in water of 20° C., and which contains water and/or methanol in the specific amounts. According to the present invention, it is not required to transport a slurry of water, methanol or glycol, but possible to transport in the form of powder, so that efficiency in transportation is not only enhanced, but a drastic simplification in the production steps and a cost reduction are attainable because neither a distillation apparatus for replacing a solvent such as water and methanol with glycol nor a step of wet-pulverizing is required. Moreover, a glycol dispersion of the present invention is able to reproduce the excellent shape and size of the inorganic particles before drying or in the initial state and therefore has an excellent dispersibility.Type: GrantFiled: January 13, 2000Date of Patent: April 16, 2002Assignee: Maruo Calcium Company LimitedInventors: Naofumi Saito, Seiya Shimizu, Kazunori Ohide, Shiro Minayoshi
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Food additive slurry or powder composition and food composition containing same and method of making
Patent number: 6254905Abstract: A food additive slurry or powder composition which comprises 100 parts by weight of at least one selected from the group consisting of calcium carbonate, calcium phosphate and ferric pyrophosphate (A) and 1 to 60 parts by weight of gum arabic (B), anda calcium ion concentration M (mg/l) satisfying 10<M≦500. The composition is superior not only in re-dispersibility and dispersion stability in liquid for a long period of time, and flavor, but is capable of providing highly concentrated products, and therefor it is advantageous economically.Type: GrantFiled: September 24, 1999Date of Patent: July 3, 2001Assignee: Maruo Calcium Company LimitedInventors: Hisakazu Hojo, Naoki Kubota, Shiro Minayoshi -
Patent number: 6033780Abstract: The fine particles of peraloid porous hydroxyapatite are provided, which have an atomic ratio of Ca/P in a range of 1.62-1.72 and the chemical formula Ca.sub.5 (PO.sub.4).sub.3 (OH). The particles are comprised of micropores having a petaloid porous structure not only on the surface but also in the inside of the particles, and have the specific particle diameter of the specific particle size, micropore diameter of the specific particle size, the specific surface of the specific range, static and pressurized percentage of voids of the specific range. The particles have superior dispersibility and are useful in the fields such as carriers for pharmaceuticals and so on, adsorbents, absorbents, sustained-release materials, filtering agents, biological materials, fillers for plastics, and anti-blocking agents for films and so on.Type: GrantFiled: January 5, 1998Date of Patent: March 7, 2000Assignee: Maruo Calcium Company LimitedInventors: Hidehiko Nishioka, Shigeo Takiyama, Minoru Hanazaki
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Patent number: 5844022Abstract: An additive for synthetic resins is provided. The additive comprises particles surface-coated with a petaloid porous hydroxyapatite having a chemical formula Ca.sub.5 (PO.sub.4 ).sub.3 (OH) and the petaloid porous hydroxyapatite is not less than 5% by weight of the particles. The additive can be added to any kinds of synthetic resins. If the additive is used in a polyethylene film, blocking of the film is not only prevented, but good transparency and good anti-scratch ability are imparted, and if the additive is used in a polyester, a film having good slipperiness, anti-abrasion and less coarse protrusions can be provided.Type: GrantFiled: January 12, 1998Date of Patent: December 1, 1998Assignee: Maruo Calcium Company LimitedInventors: Hidehiko Nishioka, Minoru Hanazaki, Shiro Minayoshi, Shigeo Takiyama, Mitsunobu Aoyama
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Patent number: 5494651Abstract: A monodisperse spherical, ellipsoidal or plate-like vaterite calcium carbonate almost free from secondary aggregation is disclosed. The vaterite type calcium carbonate is prepared by the steps of adding 5-20 times mol equivalent of water with respect to unslaked lime to a methanol suspension of 0.5-12 weight % of unslaked lime and/or slaked lime (in case of slaked, conversion is to be made into unslaked lime of the same mol) to prepare of a mixture of methanol, unslaked lime and/or slaked lime and water, letting carbon dioxide gas through said mixture, adjusting the temperature in the carbonation reaction system to not less than 30.degree. C. before arrival of conductivity within carbonation reaction system at the maximal point on conductivity variation curve in the carbonation reaction system and adjusting the time from start of carbonation reaction to the point where the conductivity is 100 .mu.S/cm to be less than 1,000 minutes.Type: GrantFiled: October 19, 1993Date of Patent: February 27, 1996Assignee: Maruo Calcium Company LimitedInventors: Shiro Minayoshi, Naofumi Saito, Minoru Hanazaki, Hidehiko Nishioka, Sakae Kuroda, Masako Takahashi, Seiya Shimizu, Norimasa Maida