Patents by Inventor Ryuichi Kamiyama
Ryuichi Kamiyama 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: 9289333Abstract: A disposable diaper using elastic sheet materials so that a contact surface pressure may be locally enhanced and thereby the diaper may be prevented from being noticeably displaced on the wearer's body during used thereof is provided. Of first and second waist regions at least the first waist region is contractible. The first waist region includes waist auxiliary elastic sheets extending in a direction of a transverse axis between opposite side edges of the first waist region and leg auxiliary elastic sheets extending along front peripheral edges of leg-openings. The waist auxiliary elastic sheets and the leg auxiliary elastic sheets overlap one another in areas of the opposite side edges of the first waist region adjacent to the leg-openings respectively. With the diaper put on the wearer's body, these areas come in contact with upper lateral regions of the wearer's iliac bones inclusive of the vicinity thereof.Type: GrantFiled: March 30, 2010Date of Patent: March 22, 2016Assignee: UNICHARM CORPORATIONInventors: Kaiyo Nakajima, Toshimitsu Baba, Ryuichi Kamiyama
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Patent number: 9011401Abstract: Disposable diapers improved so that waist regions are effectively elastic to assure high fitness are provided. In a first waist region, bonding region coated with adhesive lines includes a first bonding region coated with first adhesive lines extending from a peripheral edge of a waist-opening toward a crotch region and a second bonding region coated with second adhesive lines extending from the first adhesive lines into the crotch region wherein the first adhesive lines are noncontiguous to the second adhesive lines in the direction of the longitudinal axis so that, with the diaper put on the wearer's body, a region defined in the vicinity of a boundary between the first bonding region and the second bonding region folded inward.Type: GrantFiled: March 29, 2010Date of Patent: April 21, 2015Assignee: Unicharm CorporationInventors: Ryuichi Kamiyama, Toshimitsu Baba, Kaiyo Nakajima, Reiko Nitta
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Publication number: 20120278975Abstract: A pants-type disposable wearing article wherein each of the side seams has a desired joint strength and the joint should not unintentionally be released particularly in the bottom segment during use of the wearing article. Respective side seams are formed of a plurality of sealing spots arranged in a direction along a longitudinal axis. Each of the seam arrays includes a top segment lying in the vicinity of a peripheral edge of each waist-opening and a bottom segment lying in the vicinity of a crotch region wherein each of the sealing spots has a substantially uniform area and a dimension of the bottom segment in a direction along a transverse axis is larger than a dimension of the top segment in the direction along the transverse axis.Type: ApplicationFiled: January 17, 2011Publication date: November 8, 2012Applicant: UNICHARM CORPORATIONInventors: Mariko Yamashita, Toshifumi Otsubo, Tatsuya Hashimoto, Ryuichi Kamiyama
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Publication number: 20120041407Abstract: Disposable diapers improved so that waist regions are effectively elastic to assure high fitness are provided. In a first waist region, bonding region coated with adhesive lines includes a first bonding region coated with first adhesive lines extending from a peripheral edge of a waist-opening toward a crotch region and a second bonding region coated with second adhesive lines extending from the first adhesive lines into the crotch region wherein the first adhesive lines are noncontiguous to the second adhesive lines in the direction of the longitudinal axis so that, with the diaper put on the wearer's body, a region defined in the vicinity of a boundary between the first bonding region and the second bonding region folded inward.Type: ApplicationFiled: March 29, 2010Publication date: February 16, 2012Applicant: UNI-CHARM CORPORATIONInventors: Ryuichi Kamiyama, Toshimitsu Baba, Kaiyo Nakajima, Reiko Nitta
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Publication number: 20120016334Abstract: A disposable diaper using elastic sheet materials so that a contact surface pressure may be locally enhanced and thereby the diaper may be prevented from being noticeably displaced on the wearer's body during used thereof is provided. Of first and second waist regions at least the first waist region is contractible. The first waist region includes waist auxiliary elastic sheets extending in a direction of a transverse axis between opposite side edges of the first waist region and leg auxiliary elastic sheets extending along front peripheral edges of leg-openings. The waist auxiliary elastic sheets and the leg auxiliary elastic sheets overlap one another in areas of the opposite side edges of the first waist region adjacent to the leg-openings respectively. With the diaper put on the wearer's body, these areas come in contact with upper lateral regions of the wearer's iliac bones inclusive of the vicinity thereof.Type: ApplicationFiled: March 30, 2010Publication date: January 19, 2012Applicant: UNI-CHARM CORPORATIONInventors: Kaiyo Nakajima, Toshimitsu Baba, Ryuichi Kamiyama
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Publication number: 20110098666Abstract: An absorbent article is improved to restrict a possibility that through-hole(s) formed in a separate sheet might have width dimension(s) narrowed as the separate sheet is spaced from a liquid-absorbent structure. The absorbent includes first front and rear elasticized regions outside of opposite lateral regions as viewed in a transverse direction of the separate sheet. Each of these first front and rear elasticized regions is paired and spaced apart from each other in the transverse direction and between respective pairs of first front and rear elasticized regions. Front and rear non-elasticized regions are free from any influence by the contractile force of the front and rear waist elastic members. The sub-regions of the front and rear waist regions unoccupied by a liquid-absorbent structure extend in the transverse direction between respective pairs of opposite side edges.Type: ApplicationFiled: May 29, 2009Publication date: April 28, 2011Applicant: UNI-CHARM CORPORATIONInventors: Kaiyo Nakajima, Hironao Minato, Ryuichi Kamiyama
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Publication number: 20110009842Abstract: The present invention aims to provide an absorbent article to prevent stuffiness generated between a barrier sheet and a wearer's skin and thereby to prevent eczema due to such stuffiness. An absorbent article including a chassis and a barrier sheet. The barrier sheet has a pair of lateral zones opposed to each other in a transverse direction and a middle zone connecting the lateral zones and the middle zones lies on a crotch region. Front and rear through-holes, are defined by the lateral zones and the middle zone. The lateral zones lying outside the middle zone as viewed in the transverse direction are partially cutaway to form notches. The notches are formed by the lateral zones.Type: ApplicationFiled: August 18, 2008Publication date: January 13, 2011Applicant: UNI-CHARM CORPORATIONInventors: Hironao Minato, Kaiyo Nakajima, Ryuichi Kamiyama, Reiko Nitta
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Publication number: 20100262101Abstract: A liquid-absorbent chassis includes front and rear passage openings defined by lateral portions and a middle portion, and barrier sheet elastic members functioning to space a barrier sheet upwardly from the liquid-absorbent chassis. The barrier sheet includes first adhesion sites at which front and rear end portions are bonded to the barrier sheet, second adhesion sites at which convex segments of the barrier sheet elastic members are bonded to the barrier sheet and third adhesion sites defined between respective pairs of first adhesion sites and a pair of the second adhesion sites and at which segments of the barrier sheet elastic members occupying these sites are bonded to the barrier sheet. The adhesive forming the second and third adhesion sites has a basis weight lower than the basis weight of the adhesive forming the first adhesion sites.Type: ApplicationFiled: July 11, 2008Publication date: October 14, 2010Applicant: Uni-Charm CorporationInventors: Hironao Minato, Kaiyo Nakajima, Ryuichi Kamiyama
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Patent number: 7547815Abstract: A disposable absorbent pad includes an absorbent fibrous structure having a longitudinal axis, a transverse axis, and front and rear regions aligned with each other in a direction along the longitudinal axis. The pad has a flexibility of the front region higher than in rear region.Type: GrantFiled: September 26, 2005Date of Patent: June 16, 2009Assignee: Uni-Charm CorporationInventors: Naoto Ohashi, Tomomi Oku, Hikari Kawakami, Ryuichi Kamiyama
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Publication number: 20060069371Abstract: A disposable absorbent pad includes an absorbent fibrous structure (10) having a longitudinal axis (11), a transverse axis (12), and front and rear regions (15a, 15b) aligned with each other in a direction along the longitudinal axis wherein a flexibility of the front region is higher than that of the rear region.Type: ApplicationFiled: September 26, 2005Publication date: March 30, 2006Applicant: UNI-CHARM CORPORATIONInventors: Naoto Ohashi, Tomomi Oku, Hikari Kawakami, Ryuichi Kamiyama