Patents by Inventor Nobuki Sakikawa
Nobuki Sakikawa 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: 11833321Abstract: An application member includes a stimuli-responsive polymer that reversibly changes to being hydrophilic and to being hydrophobic in response to an external stimulus to allow impregnation and release of an active ingredient to be applied to the skin.Type: GrantFiled: September 23, 2020Date of Patent: December 5, 2023Assignee: SHARP KABUSHIKI KAISHAInventor: Nobuki Sakikawa
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Publication number: 20230294040Abstract: A water collecting apparatus (100) includes a moisture-absorbing material (10) and a heat-conducting member (20). The moisture-absorbing material (10) includes a polymer compound having a property in which a degree of hydrophilicity changes with temperature. The heat-conducting member (20) is disposed facing a portion of an outer surface of the moisture-absorbing material (10) and has thermal conductivity. The heat-conducting member (20) is preferably disposed so that another portion of the outer surface of the moisture-absorbing material (10) is left exposed. The portion of the outer surface of the moisture-absorbing material (10) and the other portion of the outer surface of the moisture-absorbing material (10) are collinearly positioned.Type: ApplicationFiled: August 17, 2021Publication date: September 21, 2023Inventor: NOBUKI SAKIKAWA
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Patent number: 11618005Abstract: An excellent hygroscopic material containing a temperature responsive polymer, which can efficiently conduct heat, and hence has water release properties of absorbed water is realized. The hygroscopic material containing a polymer gel containing a temperature responsive polymer whose affinity with water reversibly changes in response to temperature stimulation and a thermally conductive filler is used.Type: GrantFiled: January 22, 2018Date of Patent: April 4, 2023Assignees: SHARP KABUSHIKI KAISHA, THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Nobuki Sakikawa, Takashi Miyata
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Publication number: 20220288368Abstract: An application member includes a stimuli-responsive polymer that reversibly changes to being hydrophilic and to being hydrophobic in response to an external stimulus to allow impregnation and release of an active ingredient to be applied to the skin.Type: ApplicationFiled: September 23, 2020Publication date: September 15, 2022Inventor: NOBUKI SAKIKAWA
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Patent number: 11383201Abstract: To reduce loss due to water evaporation and to efficiently release moisture from a moisture absorbing portion, in the humidity controller according to the present invention, a moisture absorbing portion (2) is formed to include at least two gel sections each with a different thermal conductivity and to release absorbed moisture from an exposed surface (31) that is a specific region exposed outside and that is disposed on the surface opposite to a heater (5) on the basis of heating by the heater (5).Type: GrantFiled: January 11, 2018Date of Patent: July 12, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Nobuki Sakikawa, Hiroaki Okano
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Patent number: 11007475Abstract: To provide a dehumidifying device and dehumidifying method each of which allows absorbed water to be efficiently extracted from a stimuli-responsive polymeric moisture absorbing material or a polymeric moisture absorbing material containing a stimuli-responsive polymeric moisture absorbing material, a dehumidifying device of an embodiment of the present invention includes (i) a stimulus providing section configured to provide an external stimulus to a stimuli-responsive polymeric moisture absorbing material or a polymeric moisture absorbing material containing a stimuli-responsive polymeric moisture absorbing material and (ii) a transfer section configured to transfer water released by the polymeric moisture absorbing material.Type: GrantFiled: February 16, 2016Date of Patent: May 18, 2021Assignees: SHARP KABUSHIKI KAISHA, THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Nobuki Sakikawa, Takashi Miyata, Kazuya Matsumoto
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Publication number: 20210129075Abstract: To reduce loss due to water evaporation and to efficiently release moisture from a moisture absorbing portion, in the humidity controller according to the present invention, a moisture absorbing portion (2) is formed to include at least two gel sections each with a different thermal conductivity and to release absorbed moisture from an exposed surface (31) that is a specific region exposed outside and that is disposed on the surface opposite to a heater (5) on the basis of heating by the heater (5).Type: ApplicationFiled: January 11, 2018Publication date: May 6, 2021Inventors: NOBUKI SAKIKAWA, HIROAKI OKANO
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Publication number: 20200171461Abstract: An excellent hygroscopic material containing a temperature responsive polymer, which can efficiently conduct heat, and hence has water release properties of absorbed water is realized. The hygroscopic material containing a polymer gel containing a temperature responsive polymer whose affinity with water reversibly changes in response to temperature stimulation and a thermally conductive filler is used.Type: ApplicationFiled: January 22, 2018Publication date: June 4, 2020Inventors: NOBUKI SAKIKAWA, TAKASHI MIYATA
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Patent number: 10539334Abstract: The present invention achieves a moisture absorbing material which enables efficient dehumidification without supercooling or large heat quantity; and a dehumidifier in which the moisture absorbing material is used. The moisture absorbing material can be a dried product of a polymer gel in which an interpenetrating polymer network structure or a semi-interpenetrating polymer network structure is formed by (a) a stimuli-responsive polymer whose affinity with water changes reversibly in response to an external stimulus and (b) a hydrophilic polymer.Type: GrantFiled: October 27, 2015Date of Patent: January 21, 2020Assignees: SHARP KABUSHIKI KAISHA, THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Nobuki Sakikawa, Takashi Miyata, Kazuya Matsumoto
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Patent number: 10265656Abstract: A moisture absorbing material (i) having has (a) a first state in which the moisture absorbing material is capable of absorbing moisture, and (b) a second state in which the moisture absorbing material releases the moisture absorbed in the first state, and (ii) has a property of changing from the first state to the second state in response to an external stimulus and returning from the second state to the first state when the external stimulus disappears, the moisture absorbing material includes: first through fourth moisture absorbing bodies which have respective different stimulus response levels and are provided in order of stimulus response level so as to be in contact with one another.Type: GrantFiled: August 27, 2015Date of Patent: April 23, 2019Assignees: SHARP KABUSHIKI KAISHA, THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Nobuki Sakikawa, Yoshihiro Uramoto, Takashi Miyata
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Patent number: 10252213Abstract: Provided is a dehumidification apparatus with good energy efficiency. A moisture absorbing material (polymeric moisture absorbing material 24), which absorbs moisture and swells at a temperature not higher than a predetermined temperature sensitive point, while shrinking and releasing condensed water at a temperature higher than the temperature sensitive point as a result of phase transition, is formed so as to be divided into a plurality of segments which are made apart from each other during dehydration. A rotation motor (21) is used to move the moisture absorbing material (polymeric moisture absorbing material 24) between a moisture absorption region (14a) and a dehydration region (14b). In the dehydration region (14b), the moisture absorbing material (polymeric moisture absorbing material 24) is heated by the heater (25).Type: GrantFiled: August 27, 2015Date of Patent: April 9, 2019Assignees: SHARP KABUSHIKI KAISHA, THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Yoshihiro Uramoto, Nobuki Sakikawa, Takashi Miyata
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Patent number: 10195563Abstract: A dehumidifying device configured such that a dehumidifying material having absorbed moisture can efficiently release moisture. The dehumidifying device carries out dehumidification with a polymeric moisture-absorbing material that (i) exhibits hydrophilicity in a temperature range equal to or lower than a temperature sensitive point which is a given temperature and (ii) exhibits hydrophobicity in a temperature range higher than the temperature sensitive point.Type: GrantFiled: August 13, 2015Date of Patent: February 5, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Yoshihiro Uramoto, Nobuki Sakikawa, Yasumasa Suzuki
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Patent number: 10099173Abstract: A humidity controlling apparatus comprising: a moisture absorption unit including a base material rotatable about a rotation shaft and a macromolecular moisture absorbent provided in a layer on an outer periphery of the base material; and a heat source partially heating the moisture absorption unit, the macromolecular moisture absorbent having a hydrophilic state capable of absorbing moisture in the air and a hydrophobic state which releases the moisture sorbed in the hydrophilic state, the macromolecular moisture absorbent having a nature such that when temperature rises, the macromolecular moisture absorbent changes from the hydrophilic state to the hydrophobic state, and when the temperature falls, the macromolecular moisture absorbent returns from the hydrophobic state to the hydrophilic state, requires small thermal energy and can efficiently control humidity.Type: GrantFiled: June 11, 2015Date of Patent: October 16, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Yasumasa Suzuki, Nobuki Sakikawa, Yoshihiro Uramoto
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Patent number: 10086328Abstract: A humidity controlling apparatus comprises: a moisture absorbent (1) made of a macromolecular gelated moisture absorbing material which takes a first state being capable of absorbing moisture and a second state releasing in a liquid state the moisture absorbed in the first state, and which has a nature to change from the first state to the second state when a definite level of temperature or higher is attained, and return to the first state when the definite level of temperature or higher is no longer attained; and an energy converting particle (2) which is disposed so as to be buried inside the moisture absorbent and has a nature to generate heat when it is exposed to an external stimulus factor which is at least one of light, electric waves and a high frequency magnetic field.Type: GrantFiled: June 5, 2015Date of Patent: October 2, 2018Assignees: SHARP KABUSHIKI KAISHA, A SCHOOL CORPORATION OF KANSAI UNIVERSITYInventors: Nobuki Sakikawa, Yoshihiro Uramoto, Yasumasa Suzuki, Akihiro Yamaguchi, Takashi Miyata, Kazuya Matsumoto
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Publication number: 20180071676Abstract: To provide a dehumidifying device and dehumidifying method each of which allows absorbed water to be efficiently extracted from a stimuli-responsive polymeric moisture absorbing material or a polymeric moisture absorbing material containing a stimuli-responsive polymeric moisture absorbing material, a dehumidifying device of an embodiment of the present invention includes (i) a stimulus providing section configured to provide an external stimulus to a stimuli-responsive polymeric moisture absorbing material or a polymeric moisture absorbing material containing a stimuli-responsive polymeric moisture absorbing material and (ii) a transfer section configured to transfer water released by the polymeric moisture absorbing material.Type: ApplicationFiled: February 16, 2016Publication date: March 15, 2018Inventors: NOBUKI SAKIKAWA, TAKASHI MIYATA, KAZUYA MATSUMOTO
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Publication number: 20180050298Abstract: An object of the present invention is to provide a water collecting device and a water collecting method each of which makes it possible to efficiently extract water absorbed as moisture in a polymeric moisture-absorbing material. The object is achieved by a water collecting device including: a stimulus applying section for applying an external stimulus which is intended to decrease the affinity with water of a polymeric moisture-absorbing material; and a vibration section for providing vibration to the polymeric moisture-absorbing material having a decreased affinity with water and thereby causing water to be released from the polymeric moisture-absorbing material.Type: ApplicationFiled: February 17, 2016Publication date: February 22, 2018Inventors: NOBUKI SAKIKAWA, YOSHIHIRO URAMOTO, TAKASHI MIYATA
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Publication number: 20170282120Abstract: Provided is a dehumidifying device configured such that a dehumidifying material which has absorbed moisture can efficiently release the moisture. The dehumidifying device (1A) carries out dehumidification with use of a polymeric moisture-absorbing material (23) that (i) exhibits hydrophilicity in a temperature range equal to or lower than a temperature sensitive point which is a given temperature and (ii) exhibits hydrophobicity in a temperature range higher than the temperature sensitive point.Type: ApplicationFiled: August 13, 2015Publication date: October 5, 2017Applicant: Sharp Kabushiki KaishaInventors: Yoshihiro URAMOTO, Nobuki SAKIKAWA, Yasumasa SUZUKI
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Publication number: 20170276380Abstract: The present invention achieves a moisture absorbing material which enables efficient dehumidification without supercooling or large heat quantity; and a dehumidifier in which the moisture absorbing material is used. The moisture absorbing material can be a dried product of a polymer gel in which an interpenetrating polymer network structure or a semi-interpenetrating polymer network structure is formed by (a) a stimuli-responsive polymer whose affinity with water changes reversibly in response to an external stimulus and (b) a hydrophilic polymer.Type: ApplicationFiled: October 27, 2015Publication date: September 28, 2017Inventors: Nobuki SAKIKAWA, Takashi MIYATA, Kazuya MATSUMOTO
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Publication number: 20170266605Abstract: Provided is a dehumidification apparatus with good energy efficiency. A moisture absorbing material (polymeric moisture absorbing material 24), which absorbs moisture and swells at a temperature not higher than a predetermined temperature sensitive point, while shrinking and releasing condensed water at a temperature higher than the temperature sensitive point as a result of phase transition, is formed so as to be divided into a plurality of segments which are made apart from each other during dehydration. A rotation motor (21) is used to move the moisture absorbing material (polymeric moisture absorbing material 24) between a moisture absorption region (14a) and a dehydration region (14b). In the dehydration region (14b), the moisture absorbing material (polymeric moisture absorbing material 24) is heated by the heater (25).Type: ApplicationFiled: August 27, 2015Publication date: September 21, 2017Inventors: Yoshihiro URAMOTO, Nobuki SAKIKAWA, Takashi MIYATA
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Publication number: 20170266610Abstract: Provided is a moisture absorbing material, a dehumidifying device, and a dehumidifying method each of which makes it possible to efficiently release absorbed moisture without use of a large quantity of heat. A moisture absorbing material (22) (i) having (a) a first state in which the moisture absorbing material (22) is capable of absorbing moisture and (b) a second state in which the moisture absorbing material (22) releases the moisture absorbed in the first state and (ii) having a property of changing from the first state to the second state in response to an external stimulus and returning from the second state to the first state when the external stimulus disappears, the moisture absorbing material (22) including: first through fourth moisture absorbing bodies (22a) through (22d) which have respective different stimulus response levels and are provided in order of stimulus response level so as to be in contact with one another.Type: ApplicationFiled: August 27, 2015Publication date: September 21, 2017Inventors: Nobuki SAKIKAWA, Yoshihiro URAMOTO, Takashi MIYATA