Patents by Inventor Yasuyuki Kawazu
Yasuyuki Kawazu 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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Polyamide pre-expanded particles, and polyamide foam molded article and method of producing the same
Patent number: 11884818Abstract: Polyamide pre-expanded particles of this disclosure have a peak temperature of a maximum endothermic peak of 150-275° C. on a DSC curve obtained while being heated from 30° C. to 280° C. at a heating rate of 10° C./min using a DSC. The width of the peak is 30-80° C. when a straight line approximating the DSC curve on a high-temperature side relative to the peak after an end of melting is used as a baseline. The width corresponds to a difference between an extrapolated melting start temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a low-temperature side and the baseline, and an extrapolated melting end temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a high-temperature side and the baseline.Type: GrantFiled: July 31, 2019Date of Patent: January 30, 2024Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Yoshinori Fujino, Ryota Nakayama, Yasuyuki Kawazu -
Publication number: 20230211583Abstract: An object of the present disclosure is to provide a composite material laminate excellent in impact resistance and vibration damping property. The present disclosure is a composite material laminate including a metal substrate, an adhesive layer formed on a surface of the metal substrate, and a foamed body layer formed on a surface of the adhesive layer, wherein a shear fracture strength (S) at an interface between the metal substrate and the adhesive layer is 1.0 MPa or more, and (S/F) determined by dividing the shear fracture strength (S) at the interface by a bending elastic modulus (F) of the foamed body layer is 0.007 or more and 0.5 or less.Type: ApplicationFiled: June 2, 2021Publication date: July 6, 2023Applicant: ASAHI KASEI KABUSHIKI KAISHAInventor: Yasuyuki KAWAZU
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Patent number: 11235553Abstract: Provided are a foam molded product and a method of producing the same. The foam molded product is a molded product containing a resin and including a surface layer, a compressive deformation layer, and a foam layer. The thickness of the surface layer is 0.1 mm to 5.0 mm. The compressive deformation layer is located between the surface layer and the foam layer. Foam particles forming the compressive deformation layer have an average H/L of 0.5 or less (H: length in compression direction; L: length in perpendicular direction relative to compression direction). Foam particles forming the foam layer have an expansion ratio of not less than 3.0 times and less than 30 times.Type: GrantFiled: April 5, 2019Date of Patent: February 1, 2022Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Yasuyuki Kawazu, Tetsuo Nakamoto
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POLYAMIDE PRE-EXPANDED PARTICLES, AND POLYAMIDE FOAM MOLDED ARTICLE AND METHOD OF PRODUCING THE SAME
Publication number: 20210317308Abstract: Polyamide pre-expanded particles of this disclosure have a peak temperature of a maximum endothermic peak of 150-275° C. on a DSC curve obtained while being heated from 30° C. to 280° C. at a heating rate of 10° C./min using a DSC. The width of the peak is 30-80° C. when a straight line approximating the DSC curve on a high-temperature side relative to the peak after an end of melting is used as a baseline. The width corresponds to a difference between an extrapolated melting start temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a low-temperature side and the baseline, and an extrapolated melting end temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a high-temperature side and the baseline.Type: ApplicationFiled: July 31, 2019Publication date: October 14, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Yoshinori FUJINO, Ryota NAKAYAMA, Yasuyuki KAWAZU -
Publication number: 20210039352Abstract: Provided are a foam molded product and a method of producing the same. The foam molded product is a molded product containing a resin and including a surface layer, a compressive deformation layer, and a foam layer. The thickness of the surface layer is 0.1 mm to 5.0 mm. The compressive deformation layer is located between the surface layer and the foam layer. Foam particles forming the compressive deformation layer have an average H/L of 0.5 or less (H: length in compression direction; L: length in perpendicular direction relative to compression direction). Foam particles forming the foam layer have an expansion ratio of not less than 3.0 times and less than 30 times.Type: ApplicationFiled: April 5, 2019Publication date: February 11, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Yasuyuki KAWAZU, Tetsuo NAKAMOTO
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Patent number: 9726929Abstract: A wire grid polarizing plate (10) has a substrate (11) having a concavo-convex structure extending in a particular direction on its surface, and a conductive material (12) provided to be distributed on one side surface (11b) of a convex portion (11a) of the concavo-convex structure. Further, in the wire grid polarizing plate (10), in a cross-sectional view in the perpendicular direction to the extension direction of the concavo-convex structure, a pitch P1 that is a distance between two adjacent convex portions (11a) is set at 120 nm or less, and a convex-portion height (H) that is a difference in height between a highest portion (11c) of the convex portion (11a) and a lowest portion (11e) of a concave portion (11d) is set at 0.8 time to 1.3 time the pitch P1. With the wire grid polarizing plate (10) in a liquid crystal display device, high image quality can be achieved.Type: GrantFiled: October 12, 2012Date of Patent: August 8, 2017Assignee: ASAHI KASEI E-MATERIALS CORPORATIONInventors: Yasuyuki Kawazu, Takashi Ono, Masaharu Sugimura, Masaru Sugiyama
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Patent number: 8927056Abstract: A dielectric layer 2 is formed on a region including grid-shaped convex portions 1a of a resin substrate 1 having the grid-shaped convex portions 1a with pitches of 80 nm to 120 nm on its surface, and metal wires 3 are formed on the dielectric layer 2. It is thereby possible to obtain a wire grid polarizer having a microstructural concavo-convex grid with pitches of the level of 120 nm or less that has not been implemented.Type: GrantFiled: October 16, 2006Date of Patent: January 6, 2015Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Publication number: 20140293142Abstract: A wire grid polarizing plate (10) has a substrate (11) having a concavo-convex structure extending in a particular direction on its surface, and a conductive material (12) provided to be distributed on one side surface (11b) of a convex portion (11a) of the concavo-convex structure. Further, in the wire grid polarizing plate (10), in a cross-sectional view in the perpendicular direction to the extension direction of the concavo-convex structure, a pitch P1 that is a distance between two adjacent convex portions (11a) is set at 120 nm or less, and a convex-portion height (H) that is a difference in height between a highest portion (11c) of the convex portion (11a) and a lowest portion (11e) of a concave portion (11d) is set at 0.8 time to 1.3 time the pitch P1. With the wire grid polarizing plate (10) in a liquid crystal display device, high image quality can be achieved.Type: ApplicationFiled: October 12, 2012Publication date: October 2, 2014Inventors: Yasuyuki Kawazu, Takashi Ono, Masaharu Sugimura, Masaru Sugiyama
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Patent number: 7894019Abstract: A wire grid polarizer has mainly a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.Type: GrantFiled: April 23, 2008Date of Patent: February 22, 2011Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Patent number: 7605883Abstract: A wire grid polarizer has a resin substrate having grid-shaped convex portions, a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions, and metal wires provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.Type: GrantFiled: October 17, 2006Date of Patent: October 20, 2009Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Publication number: 20080303986Abstract: A wire grid polarizer has mainly a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.Type: ApplicationFiled: April 23, 2008Publication date: December 11, 2008Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Publication number: 20070242187Abstract: A wire grid polarizer has a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.Type: ApplicationFiled: October 17, 2006Publication date: October 18, 2007Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Publication number: 20070087549Abstract: A dielectric layer 2 is formed on a region including grid-shaped convex portions 1a of a resin substrate 1 having the grid-shaped convex portions 1a with pitches of 80 nm to 120 nm on its surface, and metal wires 3 are formed on the dielectric layer 2. It is thereby possible to obtain a wire grid polarizer having a microstructural concavo-convex grid with pitches of the level of 120 nm or less that has not been implemented.Type: ApplicationFiled: October 16, 2006Publication date: April 19, 2007Inventors: Hiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu