Patents by Inventor Satsuki Kitajima
Satsuki Kitajima 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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Publication number: 20200362213Abstract: The present invention relates to an anti-fogging agent which is for preventing fogging even during exposure to vapor. The purpose of the present invention is to provide an ideal hydrolysis product of surface-active silane coupling agent and a transformed metal oxide sol which is transformed by means of a hydrolysis product of a surface-active silane coupling agent. A hydrolysis product of a surface-active silane coupling agent, according to the present invention, is a reaction product of a surfactant in formula (1) below and a silane coupling agent having the functional groups reactable with active hydrogen in formula (1). Formula (1): R1—X—(CH2CH2O)n—Y, wherein R1 is alkyl group having from 1 to 20 carbon atoms, X is —O—, —COO— or —CONH—, n is a natural number from 1 to 30, and Y is a hydrogen atom, —CH2COOH.Type: ApplicationFiled: August 3, 2020Publication date: November 19, 2020Inventors: Masahiro SATOH, Satsuki KITAJIMA
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Patent number: 10377777Abstract: A transformed metal oxide sol, according to the present invention, has as main components: a hydrolysis product of a surface-active silane coupling agent, a transformed metal oxide sol which has been transformed by means of a hydrolysis product of a surface-active silane coupling agent, or a mixture and/or a condensate of the hydrolysis product of the surface-active silane coupling agent and the transformed metal oxide sol which has been transformed by means of the hydrolysis product of the surface-active silane coupling agent; and a mixture of transformed metal oxide sols which have been transformed by means of sulfur-containing functional groups, wherein a raw metal oxide sol of the transformed metal oxide sol is preferably an organosilica sol.Type: GrantFiled: October 7, 2016Date of Patent: August 13, 2019Assignee: CEKO CO., LTD.Inventors: Masahiro Satoh, Satsuki Kitajima
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Publication number: 20180362552Abstract: There is provided a betaine-based silicon compound which exhibits the effect of hydrophilizating and defogging a surface. The betaine-based silicon compound is represented by formula (1). X13-m(CH3)mSi—R1—(Y1—R2)n}o—N+(R3)p(R4)q—Y2COO?(1) {In the formula: X1 represents an alkoxy group with 1 to 5 carbon atoms or a halogen atom which may be identical to or different from one another; m represents 0 or 1; R1 represents an alkylene group with 1 to 5 carbon atoms; Y1 represents —NHCOO—, —NHCONH—, —S—, or —SO2—; n represents 0 or 1; R2 represents an alkylene group with 1 to 10 carbon atoms or —CH2CH2N+(CH3)(Y2COO?)CH2CH2OCH2CH2—; o represents 1, 2 or 3; R3 and R4 represent an alkyl group with 1 to 5 carbon atoms which may be identical to or different from one another; Y2 represents —CH2— or the like; p and q represent 0 or 1; provided that o+p+q equals 3.Type: ApplicationFiled: March 25, 2016Publication date: December 20, 2018Applicant: KRI, Inc.Inventors: Masahiro Satoh, Satsuki Kitajima
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Publication number: 20180298258Abstract: The present invention relates to an anti-fogging agent which is for preventing fogging even during exposure to vapor. The purpose of the present invention is to provide an ideal hydrolysis product of surface-active silane coupling agent and a transformed metal oxide sol which is transformed by means of a hydrolysis product of a surface-active silane coupling agent. A hydrolysis product of a surface-active silane coupling agent, according to the present invention, is a reaction product of a surfactant in formula (1) below and a silane coupling agent having the functional groups reactable with active hydrogen in formula (1). Formula (1): R1—X—(CH2CH2O)n—Y, wherein R1 is alkyl group having from 1 to 20 carbon atoms, X is —O—, —COO— or —CONH—, n is a natural number from 1 to 30, and Y is a hydrogen atom, —CH2COOH.Type: ApplicationFiled: October 7, 2016Publication date: October 18, 2018Applicant: CEKO CO., LTD.Inventors: Masahiro SATOH, Satsuki KITAJIMA
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Publication number: 20180298039Abstract: A transformed metal oxide sol, according to the present invention, has as main components: a hydrolysis product of a surface-active silane coupling agent, a transformed metal oxide sol which has been transformed by means of a hydrolysis product of a surface-active silane coupling agent, or a mixture and/or a condensate of the hydrolysis product of the surface-active silane coupling agent and the transformed metal oxide sol which has been transformed by means of the hydrolysis product of the surface-active silane coupling agent; and a mixture of transformed metal oxide sols which have been transformed by means of sulfur-containing functional groups, wherein a raw metal oxide sol of the transformed metal oxide sol is preferably an organosilica sol.Type: ApplicationFiled: October 7, 2016Publication date: October 18, 2018Inventors: Masahiro SATOH, Satsuki KITAJIMA
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Patent number: 9017476Abstract: Disclosed is a modified metal oxide sol that has a large hydrophilizing effect and antistatic effect, can be produced at low cost and is capable of being a coating. Specifically disclosed is a modified metal oxide sol characterized by modification by a functional group represented by formula (1) at 0.55-5.5 mmol per 1 g of metal oxide sol. MOS(?O)2—R1—Si(CH3)n(—O—)3-n (1) {In the formula, M is a hydrogen ion, C1-4 alkyl group, metal ion or ammonium (NR24) group; Rl is a C1-10 alkylene group (may have urethane bonds or urea bonds in the main alkylene chain); R2 may be the same or different and is a C1-5 alkyl group or a hydrogen atom; and n represents 0 or 1}.Type: GrantFiled: May 11, 2011Date of Patent: April 28, 2015Assignee: KRI, Inc.Inventors: Masahiro Satoh, Satsuki Kitajima, Daisaku Shojo
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Publication number: 20130055927Abstract: Disclosed is a modified metal oxide sol that has a large hydrophilizing effect and antistatic effect, can be produced at low cost and is capable of being a coating. Specifically disclosed is a modified metal oxide sol characterized by modification by a functional group represented by formula (1) at 0.55-5.5 mmol per 1 g of metal oxide sol. MOS(?0)2—R1—Si(CH3)n(—O—)3-n (1) {In the formula, M is a hydrogen ion, C1-4 alkyl group, metal ion or ammonium (NR24) group; Rl is a C1-10 alkylene group (may have urethane bonds or urea bonds in the main alkylene chain); R2 may be the same or different and is a C1-5 alkyl group or a hydrogen atom; and n represents 0 or 1.Type: ApplicationFiled: May 11, 2011Publication date: March 7, 2013Applicant: KRI, INC.Inventors: Masahiro Satoh, Satsuki Kitajima, Daisaku Shojo
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Patent number: 7534547Abstract: A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A-[(J)m-(X-Pro)]n??(1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.Type: GrantFiled: March 29, 2002Date of Patent: May 19, 2009Assignee: Osaka Gas Company LimitedInventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima, Atsushi Niwa
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Patent number: 6921623Abstract: A photosensitive resin composition for using in combination with a photosensitizer comprises an active component selected from an active metal alkoxide represented by the formula (1) or a polycondensate thereof and a particle represented by the formula (2), (X)m-n-Mm-[(U1)p—(U2-Z)t]n??(1) P—[(Y)s—{(U1)p—(U2-Z)t}]k??(2) wherein, X shows a hydrogen, a halogen, an alkoxy group or an alkoxycarbonyl group, M shows a metal atom whose valence m is not less than 2, U1 shows a first connecting unit, U2 shows a second connecting unit and Z shows a group causing a difference in solubility by light exposure, P shows a fine particle carrier, Y shows a coupling residue, n shows an integer of not less than 1 and m>n, p shows 0 or 1, t shows 1 or 2, k shows an integer of not less than 1, and s shows 0 or 1).Type: GrantFiled: December 4, 2001Date of Patent: July 26, 2005Assignee: KRI, Inc.Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima
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Publication number: 20030211421Abstract: A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1):Type: ApplicationFiled: November 27, 2002Publication date: November 13, 2003Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima, Atsushi Niwa
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Publication number: 20030064320Abstract: A photosensitive resin composition for using in combination with a photosensitizer comprises an active component selected from an active metal alkoxide represented by the formula (1) or a polycondensate thereof and a particle represented by the formula (2),Type: ApplicationFiled: August 5, 2002Publication date: April 3, 2003Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima
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Patent number: 6310116Abstract: A molded polymer article comprises a main molded body having on the surface thereof a hydrophilic polymer layer, the article being obtained by polymerizing both a monomer having a hydrophilic group and coated on the surface of a hydrophilic mold, and a polymerizable composition consisting essentially of a monomer and/or oligomer and placed in the mold. The hydrophilic polymer layer has excellent adhesiveness to the main body of the molded polymer article and excellent durability, so that the high hydrophilic property can be maintained, even when the article is exposed to external forces such as friction, over a long period of time. The molded articles are therefore useful as, in particular, contact lenses.Type: GrantFiled: September 18, 1998Date of Patent: October 30, 2001Assignee: Kuraray Co., Ltd.Inventors: Tokugen Yasuda, Hitoshi Inoue, Satsuki Kitajima, Masahiro Sato, Wu Yang, Ikuo Omura