Patents by Inventor Shigenobu Maruoka
Shigenobu Maruoka 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: 6933040Abstract: A hard coat film which comprises a substrate and a hard coat layer, wherein the hard coat layer is formed by applying on the substrate with a curable composition containing a photocurable substance and an oligomer type photopolymerization initiator and then curing by light irradiation to the applied curable composition. The hard coat film is excellent in the adhesion property between the hard coat layer and the substrate after heat treatment, and can restrain the gases generated in heat treatment.Type: GrantFiled: March 4, 2002Date of Patent: August 23, 2005Assignee: Lintec CorporationInventors: Wataru Miyazaki, Shigenobu Maruoka
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Patent number: 6887557Abstract: An anti-static hard coat film is easy to manufacture, has a high total light transmission, achieves favorable viewability for displayed images, and has a superior balance between an anti-static effect and a resistance to scratch. A hard coat layer made of an ionizing radiation-curable resin and an anti-static layer, which is about 0.03 to 2 ?m thick and is made of ionizing radiation-curable resin that includes anti-static particles with an average particle diameter of about 0.01 to 2 ?m, are formed in order on a base film, and the Taber abrasion resistance is set at 25 or below as measured in accordance with JIS K5400.Type: GrantFiled: July 18, 2002Date of Patent: May 3, 2005Assignee: Lintec CorporationInventors: Yutaka Onozawa, Satoru Shoshi, Shigenobu Maruoka
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Patent number: 6859322Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer I which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.70 to 1.95, (C) a high refractivity layer II which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.60 to 1.70 and (D) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) having specific thicknesses and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.Type: GrantFiled: February 27, 2002Date of Patent: February 22, 2005Assignee: Lintec CorporationInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka
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Patent number: 6841272Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a metal oxide and a substance cured by heat or by an ionizing radiation and has a thickness in a range of 2 to 20 ?m and (B) a low refractivity layer which comprises porous silica and a polysiloxane-based polymer and has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.Type: GrantFiled: October 23, 2002Date of Patent: January 11, 2005Assignee: Lintec CorporationInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka, Yoshitaka Takesako
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Patent number: 6827997Abstract: A pressure sensitive adhesive sheet is described. In addition, a pressure sensitive adhesive sheet that includes a pressure sensitive adhesive sheet and a release sheet that is removably attached to the pressure sensitive adhesive sheet is described. The release sheet comprises a release sheet base and a releasing agent layer provided on the release sheet base. The releasing agent layer is substantially free of silicone compound. The base of the pressure sensitive adhesive sheet and the release sheet base are formed from a plastic film or a lint-free paper, and the count of generated particles having a diameter of 0.1 &mgr;m or more generated from the pressure sensitive adhesive sheet with the release sheet is equal to or less than 100 particles/liter when measured according to Test Method for the Measurement of Particle Generation from Sheet Materials determined by SEMI G67-0996.Type: GrantFiled: October 31, 2001Date of Patent: December 7, 2004Assignee: Lintec CorporationInventors: Isao Sakurai, Tomoo Ohrui, Hiroshi Koike, Shigenobu Maruoka, Tomishi Shibano
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Patent number: 6773835Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer which comprises a resin cured by an ionizing radiation and at least two metal oxides comprising tin oxide doped with antimony and has a refractive index in a range of 1.65 to 1.80 and (C) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) each having a specific thickness and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.Type: GrantFiled: April 29, 2002Date of Patent: August 10, 2004Assignee: Lintec CorporationInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka
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Patent number: 6613426Abstract: A very fine anti-glare hard coat film which comprises a base film and a hard coat layer disposed on the base film and has a haze of 3% or greater, wherein the hard coat layer comprises (A) a resin cured by an ionizing radiation and, per 100 parts by weight of the resin, 2 to 25 parts by weight of (B) silica particles having an average diameter of 0.5 to 5 &mgr;m and 10 to 200 parts by weight of (C) fine particles having an average diameter of 1 to 60 nm. The very fine anti-glare hard coat film provides excellent visibility when the film is used for various types of displays since the film provides an excellent anti-glare property to the displays such as very fine liquid crystal displays without deterioration in the quality of displayed images.Type: GrantFiled: June 4, 2001Date of Patent: September 2, 2003Assignee: Lintec CorporationInventors: Yutaka Onozawa, Shigenobu Maruoka, Satoru Shoshi
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Publication number: 20030104188Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a metal oxide and a substance cured by heat or by an ionizing radiation and has a thickness in a range of 2 to 20 &mgr;m and (B) a low refractivity layer which comprises porous silica and a polysiloxane-based polymer and has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.Type: ApplicationFiled: October 23, 2002Publication date: June 5, 2003Applicant: LINTEC CORPORATIONInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka, Yoshitaka Takesako
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Publication number: 20030087087Abstract: An anti-static hard coat film is easy to manufacture, has a high total light transmission, achieves favorable viewability for displayed images, and has a superior balance between an anti-static effect and a resistance to scratch. A hard coat layer made of an ionizing radiation-curable resin and an anti-static layer, which is about 0.03 to 2 &mgr;m thick and is made of ionizing radiation-curable resin that includes anti-static particles with an average particle diameter of about 0.01 to 2 &mgr;m, are formed in order on a base film, and the Taber abrasion resistance is set at 25 or below as measured in accordance with JIS K5400.Type: ApplicationFiled: July 18, 2002Publication date: May 8, 2003Applicant: LINTEC CORPORATIONInventors: Yutaka Onozawa, Satoru Shoshi, Shigenobu Maruoka
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Publication number: 20020187324Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer which comprises a resin cured by an ionizing radiation and at least two metal oxides comprising tin oxide doped with antimony and has a refractive index in a range of 1.65 to 1.80 and (C) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) each having a specific thickness and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.Type: ApplicationFiled: April 29, 2002Publication date: December 12, 2002Applicant: LINTEC CORPORATIONInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka
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Publication number: 20020176169Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer I which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.70 to 1.95, (C) a high refractivity layer II which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.60 to 1.70 and (D) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) having specific thicknesses and being successively laminated at least on one face of a substrate film.Type: ApplicationFiled: February 27, 2002Publication date: November 28, 2002Applicant: LINTEC CORPORATIONInventors: Satoru Shoshi, Yutaka Onozawa, Shigenobu Maruoka
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Publication number: 20020164493Abstract: A hard coat film which comprises a substrate and a hard coat layer, wherein the hard coat layer is formed by applying on the substrate with a curable composition containing a photocurable substance and an oligomer type photopolymerization initiator and then curing by light irradiation to the applied curable composition. The hard coat film is excellent in the adhesion property between the hard coat layer and the substrate after heat treatment, and can restrain the gases generated in heat treatment.Type: ApplicationFiled: March 4, 2002Publication date: November 7, 2002Inventors: Wataru Miyazaki, Shigenobu Maruoka
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Publication number: 20020155244Abstract: Disclosed herein is a pressure sensitive adhesive sheet and a pressure sensitive adhesive sheet with a release sheet which hardly give adverse effects to hard disc drives or the like. The pressure sensitive adhesive sheet with the release sheet is constructed from a pressure sensitive adhesive sheet having a pressure sensitive adhesive base and a pressure sensitive adhesive layer, and a release sheet having a release sheet base and a releasing agent layer, and the release sheet is adhered onto the pressure sensitive adhesive sheet so that the releasing agent layer contacts with the pressure sensitive adhesive layer. In this pressure sensitive adhesive sheet with the release sheet, the content of silicone compound in the pressure sensitive adhesive sheet is preferably equal to or less than 500 &mgr;g/m2. Further, it is preferable that the amount of gas generated from the pressure sensitive adhesive sheet at a temperature of 85° C. for 30 minutes is equal to or less than 20 mg/m2.Type: ApplicationFiled: October 31, 2001Publication date: October 24, 2002Inventors: Isao Sakurai, Tomoo Ohrui, Hiroshi Koike, Shigenobu Maruoka, Tomishi Shibano
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Patent number: 6404543Abstract: An infrared shielding film comprising a transparent substrate film having, on one face thereof, at least an infrared shielding layer comprising a cured product of a coating layer which comprises (A) an ionizing radiation curing resin and (B) an infrared shielding agent comprising lanthanum in an amount of 0.1 to 20 parts by weight per 100 parts by weight of the ionizing radiation curing resin. The infrared shielding film maintains excellent transmission of visible light, effectively suppresses transmission of the sunlight and exhibits excellent scratch resistance, light resistance, durability and antifouling property.Type: GrantFiled: May 1, 2000Date of Patent: June 11, 2002Assignee: Lintec CorporationInventors: Satoru Shoshi, Shigenobu Maruoka
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Publication number: 20020028328Abstract: A very fine anti-glare hard coat film which comprises a base film and a hard coat layer disposed on the base film and has a haze of 3% or greater, wherein the hard coat layer comprises (A) a resin cured by an ionizing radiation and, per 100 parts by weight of the resin, 2 to 25 parts by weight of (B) silica particles having an average diameter of 0.5 to 5 &mgr;m and 10 to 200 parts by weight of (C) fine particles having an average diameter of 1 to 60 nm.Type: ApplicationFiled: June 4, 2001Publication date: March 7, 2002Applicant: LINTEC CORPORATIONInventors: Yutaka Onozawa, Shigenobu Maruoka, Satoru Shoshi
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Patent number: 6331071Abstract: A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirring vessel constituted of two or more basically rectangular vane plates vertically supported on the rotary shaft in symmetrical relation with each other with respect to the rotary shaft. On an upper portion of the stirring vane, a recess is formed for forming a cone about the rotary shaft when the stirring vane rotates. A lower end of the stirring vane is arranged in the vicinity of a bottom surface of the stirring vessel.Type: GrantFiled: March 1, 2001Date of Patent: December 18, 2001Assignee: Lintec CorporationInventors: Shoko Akamine, Yasunao Miyazawa, Shigenobu Maruoka
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Publication number: 20010006487Abstract: A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirring vessel constituted of two or more basically rectangular vane plates vertically supported on the rotary shaft in symmetrical relation with each other with respect to the rotary shaft. On an upper portion of the stirring vane, a recess is formed for forming a cone about the rotary shaft when the stirring vane rotates. A lower end of the stirring vane is arranged in the vicinity of a bottom surface of the stirring vessel.Type: ApplicationFiled: March 1, 2001Publication date: July 5, 2001Applicant: LINTEC CORPORATIONInventors: Shoko Akamine, Yasunao Miyazawa, Shigenobu Maruoka
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Patent number: 6244741Abstract: A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirring vessel constituted of two or more basically rectangular vane plates vertically supported on the rotary shaft in symmetrical relation with each other with respect to the rotary shaft. On an upper portion of the stirring vane, a recess is formed for forming a cone about the rotary shaft when the stirring vane rotates. A lower end of the stirring vane is arranged in the vicinity of a bottom surface of the stirring vessel.Type: GrantFiled: November 10, 1999Date of Patent: June 12, 2001Assignee: Lintec CorporationInventors: Shoko Akamine, Yasunao Miyazawa, Shigenobu Maruoka
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Patent number: 5773112Abstract: A label with a metallic layer of controlled thickness comprising a transparent or semi-transparent film, a metallic layer which is formed by metal deposition, has a light transmittance of 3 to 70%, and is formed on one side of the film, and a layer of an adhesive material formed on the metallic layer. Alternatively, a protective layer may be formed on the metallic layer, and the layer of an adhesive material formed on the other side of the film. The label is transparent even though it shows metallic gloss, has remarkably beautiful appearance, and is suitable for artistic design.Type: GrantFiled: January 2, 1997Date of Patent: June 30, 1998Assignee: Lintec CorporationInventors: Kohei Tachikawa, Akira Katayama, Toshio Minagawa, Shigenobu Maruoka
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Patent number: 5266447Abstract: Disclosed is a photochromic composition comprising an organic photochromic compound and a specific tertiary amine compound which are dissolved or dispersed in a high-molecular compound. Also disclosed are a photochromic film composed of the above photochromic composition and a photochromic laminate having a photochromic layer composed of the above photochromic composition on a surface of a substrate.Type: GrantFiled: February 20, 1991Date of Patent: November 30, 1993Assignee: Lintec CorporationInventors: Kazuhiro Takahashi, Yasukazu Nakada, Shigenobu Maruoka, Ichiro Tsuchida, Takanori Saito