Patents by Inventor Wataru Saka
Wataru Saka 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: 8450556Abstract: A shaped sheet, comprising: a plurality of protrusions (3) on one surface side of the shaped sheet formed of fibers; and connecting portions (5) for being barriers and connecting the protrusions (3) to one another, wherein the connecting portion (5) has a fiber density higher than a fiber density of the protrusion (3).Type: GrantFiled: April 30, 2008Date of Patent: May 28, 2013Assignee: Kao CorporationInventors: Takanobu Miyamoto, Takeshi Miyamura, Taeko Kanai, Aya Yoshimoto, Soichi Fujita, Hiromichi Suzuki, Wataru Saka, Shinobu Takei
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Patent number: 7942992Abstract: A bulky sheet material having three-dimensional protrusions comprises a first fiber layer and a second fiber layer provided on at least one side of the first fiber layer. The first fiber layer contains thermally shrunken heat-shrinkable fibers. The second fiber layer comprises heat non-shrinkable fibers. The first fiber layer and the second fiber layer are partly joined together at a large number of joints formed by fusion bonding. The joints are formed by melting and solidification of a heat fusible resin having a higher melting point than the shrinkage starting temperature of the heat shrinkable fiber. The second fiber layer forms a large number of protrusions between the joints by the heat shrinkage of the first fiber layer while leaving the joints as depressions.Type: GrantFiled: May 26, 2009Date of Patent: May 17, 2011Assignee: Kao CorporationInventors: Wataru Saka, Shoichi Taneichi, Takanobu Miyamoto
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Publication number: 20100249740Abstract: A shaped sheet, comprising: a plurality of protrusions (3) on one surface side of the shaped sheet formed of fibers; and connecting portions (5) for being barriers and connecting the protrusions (3) to one another, wherein the connecting portion (5) has a fiber density higher than a fiber density of the protrusion (3).Type: ApplicationFiled: April 30, 2008Publication date: September 30, 2010Inventors: Takanobu Miyamoto, Takeshi Miyamura, Taeko Kanai, Hiromichi Suzuki, Wataru Saka, Shinobu Takei
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Publication number: 20090294019Abstract: A bulky sheet material having three-dimensional protrusions comprises a first fiber layer and a second fiber layer provided on at least one side of the first fiber layer. The first fiber layer contains thermally shrunken heat-shrinkable fibers. The second fiber layer comprises heat non-shrinkable fibers. The first fiber layer and the second fiber layer are partly joined together at a large number of joints formed by fusion bonding. The joints are formed by melting and solidification of a heat fusible resin having a higher melting point than the shrinkage starting temperature of the heat shrinkable fiber. The second fiber layer forms a large number of protrusions between the joints by the heat shrinkage of the first fiber layer while leaving the joints as depressions.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Inventors: Wataru SAKA, Shoichi TANEICHI, Takanobu MIYAMOTO
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Patent number: 7534928Abstract: A topsheet for absorbent articles is disclosed. The topsheet is used on the side of an absorbent article to be brought into contact with a wearer's body. The topsheet has an air permeability of 10 ml/cm2·sec or more in the horizontal direction under a pressure of 10 cN/cm2. The topsheet also has an air permeability of 10 to 500 ml/cm2·sec in the horizontal direction under a pressure of 50 cN/cm2.Type: GrantFiled: August 9, 2002Date of Patent: May 19, 2009Assignee: Kao CorporationInventors: Noriko Sakamoto, Hiroko Sugiura, Yasuo Toyoshima, Shoichi Taneichi, Wataru Saka
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Patent number: 7303808Abstract: A bulky sheet material having three-dimensional protrusions 10 is disclosed. The sheet material comprises a first layer 1 and a second layer 2 adjacent to the first layer 1. The first layer 1 and the second layer 2 is partly joined together at joints 3 in a prescribed pattern. The first layer 1 has a number of raised portions which are located among the joints 3. The second layer 2 comprises a material which exhibits elastomeric behavior. The bulky sheet material 10 exhibits elastomeric behavior as a whole and breathability.Type: GrantFiled: October 11, 2001Date of Patent: December 4, 2007Assignee: KAO CorporationInventors: Shoichi Taneichi, Manabu Kaneta, Yasuhiro Komori, Takanobu Miyamoto, Wataru Saka, Yoshihiro Sakai
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Patent number: 7267860Abstract: A topsheet 10 of an absorbent article is a nonwoven fabric having a plurality of heat fusion joints 3 formed by embossing. Fibers constituting the nonwoven fabric protrude in the thickness direction of the nonwoven fabric between the joints 3 to form a plurality of protrusions 4a and 4b on both the upper and the lower sides of the nonwoven fabric. The base of the individual protrusions 4b formed on the lower side projects in the planar direction of the nonwoven fabric.Type: GrantFiled: November 19, 2003Date of Patent: September 11, 2007Assignee: Kao CorporationInventors: Yasuo Toyoshima, Ken Nemoto, Wataru Saka
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Patent number: 7258910Abstract: A topsheet for an absorbent article which has an uneven profile formed on a surface thereof to be brought into contact with a wearer's skin, the uneven profile being flexibly deformable in conformity to the contour of the wearer's body and to the wearer's movement, and depressions of the uneven profile being capable of trapping high-viscosity excreta thereby separating the high-viscosity excreta from the wearer's skin while an absorbent article having the topsheet is worn.Type: GrantFiled: March 4, 2005Date of Patent: August 21, 2007Assignee: Kao CorporationInventors: Yasuo Toyoshima, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi
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Patent number: 7131171Abstract: A method for restoring bulkiness of nonwoven fabric which contains crimped thermoplastic fiber and is in a roll form is disclosed. The method comprises unwinding the nonwoven fabric from the stock roll, and blowing hot air to the unwound nonwoven fabric by a through-air technique to make the nonwoven fabric increase in bulkiness. The hot air is heated at a temperature lower than the melting point of the thermoplastic fiber and not lower than a temperature lower than that melting point by about 50° C., and is blown for about 0.05 to 3 seconds.Type: GrantFiled: September 24, 2003Date of Patent: November 7, 2006Assignee: Kao CorporationInventors: Takanobu Miyamoto, Wataru Saka, Yasuhiro Komori, Koji Asano, Manabu Kaneta
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Patent number: 6926948Abstract: A topsheet for an absorbent article which has an uneven profile formed on a surface thereof to be brought into contact with a wearer's skin, the uneven profile being flexibly deformable in conformity to the contour of the wearer's body and to the wearer's movement, and depressions of the uneven profile being capable of trapping high-viscosity excreta thereby separating the high-viscosity excreta from the wearer's skin while an absorbent article having the topsheet is worn.Type: GrantFiled: September 21, 2001Date of Patent: August 9, 2005Assignee: Kao CorporationInventors: Yasuo Toyoshima, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi
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Publication number: 20050147798Abstract: A topsheet for an absorbent article which has an uneven profile formed on a surface thereof to be brought into contact with a wearer's skin, the uneven profile being flexibly deformable in conformity to the contour of the wearer's body and to the wearer's movement, and depressions of the uneven profile being capable of trapping high-viscosity excreta thereby separating the high-viscosity excreta from the wearer's skin while an absorbent article having the topsheet is worn.Type: ApplicationFiled: March 4, 2005Publication date: July 7, 2005Inventors: Yasuo Toyoshima, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi
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Patent number: 6888046Abstract: A topsheet 10 for an absorbent article comprising a first fiber layer 1 disposed on the side of a wearer and a second fiber layer 2 disposed on the side of an absorbent member, the first fiber layer 1 and the second fiber layer 2 being partially bonded together at joints 3 in a prescribed pattern, the first fiber layer 1 having protrusions 4 on the wearer's side in portions other than the joints 3, and the second fiber layer 2 being a fiber aggregate containing heat shrinkable fiber and having heat shrunken parts 5 that have shrunken and densified parts 6 that have been inhibited from heat shrinkage.Type: GrantFiled: February 10, 2003Date of Patent: May 3, 2005Assignee: Kao CorporationInventors: Yasuo Toyoshima, Noriko Sakamoto, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi
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Publication number: 20040142151Abstract: A topsheet 10 of an absorbent article is a nonwoven fabric having a plurality of heat fusion joints 3 formed by embossing. Fibers constituting the nonwoven fabric protrude in the thickness direction of the nonwoven fabric between the joints 3 to form a plurality of protrusions 4a and 4b on both the upper and the lower sides of the nonwoven fabric. The base of the individual protrusions 4b formed on the lower side projects in the planar direction of the nonwoven fabric.Type: ApplicationFiled: November 19, 2003Publication date: July 22, 2004Inventors: Yasuo Toyoshima, Ken Nemoto, Wataru Saka
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Publication number: 20040111848Abstract: A method for restoring bulkiness of nonwoven fabric which contains crimped thermoplastic fiber and is in a roll form is disclosed. The method comprises unwinding the nonwoven fabric from the stock roll, and blowing hot air to the unwound nonwoven fabric by a through-air technique to make the nonwoven fabric increase in bulkiness. The hot air is heated at a temperature lower than the melting point of the thermoplastic fiber and not lower than a temperature lower than that melting point by about 50° C., and is blown for about 0.05 to 3 seconds.Type: ApplicationFiled: September 24, 2003Publication date: June 17, 2004Inventors: Takanobu Miyamoto, Wataru Saka, Yasuhiro Komori, Koji Asano, Manabu Kaneta
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Publication number: 20030167044Abstract: A topsheet 10 for an absorbent article comprising a first fiber layer 1 disposed on the side of a wearer and a second fiber layer 2 disposed on the side of an absorbent member, the first fiber layer 1 and the second fiber layer 2 being partially bonded together at joints 3 in a prescribed pattern, the first fiber layer 1 having protrusions 4 on the wearer's side in portions other than the joints 3, and the second fiber layer 2 being a fiber aggregate containing heat shrinkable fiber and having heat shrunken parts 5 that have shrunken and densified parts 6 that have been inhibited from heat shrinkage.Type: ApplicationFiled: February 10, 2003Publication date: September 4, 2003Inventors: Yasuo Toyoshima, Noriko Sakamoto, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi
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Publication number: 20030162460Abstract: A bulky sheet material having three-dimensional protrusions comprises a first fiber layer and a second fiber layer provided on at least one side of the first fiber layer. The first fiber layer contains thermally shrunken heat-shrinkable fibers. The second fiber layer comprises heat non-shrinkable fibers. The first fiber layer and the second fiber layer are partly joined together at a large number of joints formed by fusion bonding. The joints are formed by melting and solidification of a heat fusible resin having a higher melting point than the shrinkage starting temperature of the heat shrinkable fiber. The second fiber layer forms a large number of protrusions between the joints by the heat shrinkage of the first fiber layer while leaving the joints as depressions.Type: ApplicationFiled: February 25, 2003Publication date: August 28, 2003Inventors: Wataru Saka, Shoichi Taneichi, Takanobu Miyamoto
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Publication number: 20030050615Abstract: A topsheet for absorbent articles is disclosed. The topsheet is used on the side of an absorbent article to be brought into contact with a wearer's body. The topsheet has an air permeability of 10 ml/cm2·sec or more in the horizontal direction under a pressure of 10 cN/cm2. The topsheet also has an air permeability of 10 to 500 ml/cm2·sec in the horizontal direction under a pressure of 50 cN/cm2.Type: ApplicationFiled: August 9, 2002Publication date: March 13, 2003Inventors: Noriko Sakamoto, Hiroko Sugiura, Yasuo Toyoshima, Shoichi Taneichi, Wataru Saka
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Publication number: 20020068150Abstract: A bulky sheet material having three-dimensional protrusions 10 is disclosed. The sheet material comprises a first layer 1 and a second layer 2 adjacent to the first layer 1. The first layer 1 and the second layer 2 is partly joined together at joints 3 in a prescribed pattern. The first layer 1 has a number of raised portions which are located among the joints 3. The second layer 2 comprises a material which exhibits elastomeric behavior. The bulky sheet material 10 exhibits elastomeric behavior as a whole and breathability.Type: ApplicationFiled: October 11, 2001Publication date: June 6, 2002Inventors: Shoichi Taneichi, Manabu Kaneta, Yasuhiro Komori, Takanobu Miyamoto, Wataru Saka, Yoshihiro Sakai
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Publication number: 20020058128Abstract: A topsheet for an absorbent article which has an uneven profile formed on a surface thereof to be brought into contact with a wearer's skin, the uneven profile being flexibly deformable in conformity to the contour of the wearer's body and to the wearer's movement, and depressions of the uneven profile being capable of trapping high-viscosity excreta thereby separating the high-viscosity excreta from the wearer's skin while an absorbent article having the topsheet is worn.Type: ApplicationFiled: September 21, 2001Publication date: May 16, 2002Inventors: Yasuo Toyoshima, Hiroko Sugiura, Takanobu Miyamoto, Wataru Saka, Shoichi Taneichi