Patents by Inventor Tomoyoshi Mizutani
Tomoyoshi Mizutani 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: 11058075Abstract: Prior art technology has a problem in that when a plant is cultivated for a long period of time on a PVA film having its lower surface positioned in contact with a nutrient fluid, plant roots that have formed penetrate through the film. A plant cultivation system wherein the PVA film has an equilibrium degree of swelling in the range of from 125 to 250% as measured in water at 30° C. and has a loss tangent (tan ?) in the range of from 0.005 to 0.2 as measured in an equilibrium swollen state in water at 30° C., and a method for cultivating a plant by using this plant cultivation system. Plant cultivation can be performed for a long period of time while avoiding infection by bacteria and the like causative of plant diseases. Therefore, the present invention is useful in, e.g., agriculture and the manufacture of pharmaceuticals.Type: GrantFiled: April 17, 2020Date of Patent: July 13, 2021Assignee: MEBIOL INC.Inventors: Hiroshi Yoshioka, Yuichi Mori, Akihiro Okamoto, Shigeki Miura, Tomoyoshi Mizutani
-
Publication number: 20200260671Abstract: Prior art technology has a problem in that when a plant is cultivated for a long period of time on a PVA film having its lower surface positioned in contact with a nutrient fluid, plant roots that have formed penetrate through the film. A plant cultivation system wherein the PVA film has an equilibrium degree of swelling in the range of from 125 to 250% as measured in water at 30° C. and has a loss tangent (tan ?) in the range of from 0.005 to 0.2 as measured in an equilibrium swollen state in water at 30° C., and a method for cultivating a plant by using this plant cultivation system. Plant cultivation can be performed for a long period of time while avoiding infection by bacteria and the like causative of plant diseases. Therefore, the present invention is useful in, e.g., agriculture and the manufacture of pharmaceuticals.Type: ApplicationFiled: April 17, 2020Publication date: August 20, 2020Applicant: MEBIOL INC.Inventors: Hiroshi YOSHIOKA, Yuichi MORI, Akihiro OKAMOTO, Shigeki MIURA, Tomoyoshi MIZUTANI
-
Patent number: 10660280Abstract: Prior art technology has a problem in that when a plant is cultivated for a long period of time on a PVA film having its lower surface positioned in contact with a nutrient fluid, plant roots that have formed penetrate through the film. A plant cultivation system wherein the PVA film has an equilibrium degree of swelling in the range of from 125 to 250% as measured in water at 30° C. and has a loss tangent (tan ?) in the range of from 0.005 to 0.2 as measured in an equilibrium swollen state in water at 30° C., and a method for cultivating a plant by using this plant cultivation system. Plant cultivation can be performed for a long period of time while avoiding infection by bacteria and the like causative of plant diseases. Therefore, the present invention is useful in, e.g., agriculture and the manufacture of pharmaceuticals.Type: GrantFiled: August 11, 2014Date of Patent: May 26, 2020Assignee: MEBIOL INC.Inventors: Hiroshi Yoshioka, Yuichi Mori, Akihiro Okamoto, Shigeki Miura, Tomoyoshi Mizutani
-
Publication number: 20160205880Abstract: [Problems] Prior art technology has a problem in that when a plant is cultivated for a long period of time on a polyvinyl alcohol (PVA) film having its lower surface positioned in contact with a nutrient fluid, plant roots that have formed penetrate through the film. [Means to solve the problems] A plant cultivation system wherein the PVA film has an equilibrium degree of swelling in the range of from 125 to 250% as measured in water at 30° C. and has a loss tangent (tan ?) in the range of from 0.005 to 0.2 as measured in an equilibrium swollen state in water at 30° C., and a method for cultivating a plant by using this plant cultivation system. [Industrial applicability] Plant cultivation can be performed for a long period of time while avoiding infection by bacteria and the like causative of plant diseases. Therefore, the present invention is useful in, e.g., agriculture and the manufacture of pharmaceuticals.Type: ApplicationFiled: August 11, 2014Publication date: July 21, 2016Applicant: MEBIOL INC.Inventors: Hiroshi Yoshioka, Yuichi Mori, Akihiro Okamoto, Shigeki Miura, Tomoyoshi Mizutani
-
Publication number: 20150125676Abstract: A laminate having a greater economic benefit and an excellent gas barrier property against water vapor and other gases, and a packaging material and a press-through pack employing the laminate are provided. The laminate has a layered structure including: (A) a base film; (B) a stretched vinyl alcohol resin film; and (C) a fluororesin film.Type: ApplicationFiled: May 13, 2013Publication date: May 7, 2015Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventor: Tomoyoshi Mizutani
-
Patent number: 7754318Abstract: The present invention relates to a water-soluble film, which is a polyvinyl alcohol film comprising a polyvinyl alcohol resin (A), wherein the water-soluble film has a time for dissolution in water at 20° C. of not more than 60 seconds in terms of a film thickness of 76 ?m, a b-value of the film is not more than 0.5, and a b-value of the film after leaving at 80° C. for 72 hr is not more than 1.0, preferably a water-soluble film comprising: a polyvinyl alcohol resin (A); at least two kinds of plasticizers (B); and a sulfite salt (C), wherein the content of the plasticizer (B) based on 100 parts by weight of the polyvinyl alcohol resin (A) is 5 to 50 parts by weight and the content ratio of the sulfite salt (C) to the plasticizer (B) (C/B: weight ratio) is more than 0.02 and not more than 0.35.Type: GrantFiled: June 16, 2005Date of Patent: July 13, 2010Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Shuichi Kitamura, Tomoyoshi Mizutani, Mitsuhiro Hasegawa
-
Publication number: 20090291282Abstract: The present invention relates to a water-soluble film, which is a polyvinyl alcohol film comprising a polyvinyl alcohol resin (A), wherein the water-soluble film has a time for dissolution in water at 20° C. of not more than 60 seconds in terms of a film thickness of 76 ?m, a b-value of the film is not more than 0.5, and a b-value of the film after leaving at 80° C. for 72 hr is not more than 1.0, preferably a water-soluble film comprising: a polyvinyl alcohol resin (A); at least two kinds of plasticizers (B); and a sulfite salt (C), wherein the content of the plasticizer (B) based on 100 parts by weight of the polyvinyl alcohol resin (A) is 5 to 50 parts by weight and the content ratio of the sulfite salt (C) to the plasticizer (B) (C/B: weight ratio) is more than 0.02 and not more than 0.35.Type: ApplicationFiled: June 16, 2005Publication date: November 26, 2009Applicant: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Shuichi Kitamura, Tomoyoshi Mizutani, Mitsuhiro Hasegawa
-
Patent number: 7067575Abstract: A water-soluble film made from a resin composition comprising (A) 100 parts by weight of an anionic group-modified polyvinyl alcohol having a viscosity of 10 to 35 mPa·s measured at 20° C. with respect to a 4% by weight aqueous solution thereof, an average degree of hydrolysis of 80.0 to 99.9% by mole and a rate of anionic group modification of 1 to 10% by mole, (B) 20 to 50 parts by weight of a plasticizer, (C) 2 to 30 parts by weight of a filler, and (D) 0.01 to 2.5 parts by weight of a surfactant. The water-soluble film has an excellent water solubility, and is not gelled or insolubilized even if chemicals containing a boric acid substance, particularly sodium perborate, are packaged therein or even if it is put in an aqueous solution of a boric acid substance, particularly sodium perborate.Type: GrantFiled: November 10, 2003Date of Patent: June 27, 2006Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Syuichi Kitamura, Tomoyoshi Mizutani, Mitsuhiro Hasegawa, Hideki Oono
-
Publication number: 20050010010Abstract: A polyvinyl alcohol film which dissolves in water at 20° C. within 10 minutes and has an ?/? ratio of not more than 10 wherein ? is a storage modulus of the film at 20° C. in a dry atmosphere and ? is a storage modulus of the film at 20° C. and 80% RH, and which has an excellent cold water solubility and an excellent durability such that the change in appearance of the film under high humidity is slight and the lowering of the cold water solubility is slight even if the film is stored for a long term.Type: ApplicationFiled: December 26, 2002Publication date: January 13, 2005Inventors: Shuichi Kitamura, Tomoyoshi Mizutani
-
Patent number: 6759001Abstract: A method for producing an embossed PVA film, which includes embossing the film such that the crystallinity index of the emboss top is 0.50-0.90. The invention provides an embossed PVA film superior in resistance to blocking even when in a rolled state, in appearance to show the high quality of products, and in resistance to pinholes.Type: GrantFiled: May 17, 2001Date of Patent: July 6, 2004Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Tomoyoshi Mizutani, Syuichi Kitamura, Kenji Hasegawa, Manabu Miyato, Hideki Oono
-
Publication number: 20040092635Abstract: A water-soluble film made from a resin composition comprising (A) 100 parts by weight of an anionic group-modified polyvinyl alcohol having a viscosity of 10 to 35 mPa·s measured at 20° C. with respect to a 4% by weight aqueous solution thereof, an average degree of hydrolysis of 80.0 to 99.9% by mole and a rate of anionic group modification of 1 to 10% by mole, (B) 20 to 50 parts by weight of a plasticizer, (C) 2 to 30 parts by weight of a filler, and (D) 0.01 to 2.5 parts by weight of a surfactant. The water-soluble film has an excellent water solubility, and is not gelled or insolubilized even if chemicals containing a boric acid substance, particularly sodium perborate, are packaged therein or even if it is put in an aqueous solution of a boric acid substance, particularly sodium perborate.Type: ApplicationFiled: November 10, 2003Publication date: May 13, 2004Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Syuichi Kitamura, Tomoyoshi Mizutani, Mitsuhiro Hasegawa, Hideki Oono
-
Patent number: 6657004Abstract: The present invention provides a film for packaging chemical agents, which contains an oxyalkylene unit-containing polyvinyl alcohol resin (A) and a carboxyl-containing polyvinyl alcohol resin (B), and preferably further containing a sulfo-containing polyvinyl alcohol resin (C). This film shows fine solubility in water even after a long-term packaging of an acidic chemical agent or alkaline chemical agent, and is superior in mechanical strength. Thus, the film for packaging chemical agents of the present invention is suitably used for packaging a chemical agent, such as powdered soap, synthetic detergent, agricultural chemical, antibacterial, deodorant, insecticide and the like, which is cast into water when in use.Type: GrantFiled: May 15, 2001Date of Patent: December 2, 2003Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventor: Tomoyoshi Mizutani
-
Publication number: 20020009596Abstract: The present invention provides a film for packaging chemical agents, which contains an oxyalkylene unit-containing polyvinyl alcohol resin (A) and a carboxyl-containing polyvinyl alcohol resin (B), and preferably further containing a sulfo-containing polyvinyl alcohol resin (C). This film shows fine solubility in water even after a long-term packaging of an acidic chemical agent or alkaline chemical agent, and is superior in mechanical strength. Thus, the film for packaging chemical agents of the present invention is suitably used for packaging a chemical agent, such as powdered soap, synthetic detergent, agricultural chemical, antibacterial, deodorant, insecticide and the like, which is cast into water when in use.Type: ApplicationFiled: May 15, 2001Publication date: January 24, 2002Inventor: Tomoyoshi Mizutani
-
Publication number: 20020000164Abstract: The present invention provides a method for producing an embossed PVA film, which includes embossing the film such that the crystallinity index of the emboss top is 0.50-0.90. According to the present invention, an embossed PVA film superior in resistance to blocking even when preserved in a roll state, in appearance to show high quality of products, and in resistance to pinholes can be provided.Type: ApplicationFiled: May 17, 2001Publication date: January 3, 2002Inventors: Tomoyoshi Mizutani, Syuichi Kitamura, Kenji Hasegawa, Manabu Miyato, Hideki Oono