Patents by Inventor Haruki OKAWA
Haruki OKAWA 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: 11613702Abstract: A liquid crystal composition is provided containing a first liquid crystal compound represented by formula (1): and a second liquid crystal compound represented by formula (2): Also provided is a method for producing the liquid crystal composition having a desired wavelength dispersion characteristic.Type: GrantFiled: May 28, 2019Date of Patent: March 28, 2023Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 11193065Abstract: A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).Type: GrantFiled: April 20, 2017Date of Patent: December 7, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Daichi Fujimoto, Haruki Okawa, Shinnosuke Yoshioka, Tatsuaki Kasai
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Patent number: 10961456Abstract: A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound represented by formula (1), R1 represents a hydrogen atom or the like; R2 represents an acyl group having 1 to 20 carbon atoms or the like; R3 represents a hydrogen atom or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; P1 and P2 each independently represent —S— or the like; and Q1 and Q2 each independently represent ?N— or the like.Type: GrantFiled: October 14, 2015Date of Patent: March 30, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 10731078Abstract: A composition is provided which contains a compound represented by Formula (1) below and a polymerizable smectic liquid crystal compound: In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 each independently represent a C1-C4 alkyl group; n, p, and q are each independently an integer of 0 to 2; and R5 is (i) a nitrogen-containing saturated heterocyclic group which is a 6-membered ring and in which N is bonded to a phenylene group, or (ii) a group in which N is bonded to at least one C1-C10 alkyl group.Type: GrantFiled: February 17, 2016Date of Patent: August 4, 2020Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 10557978Abstract: The present invention provides, as a composition containing a smectic liquid crystal compound which can be used for production of a homogeneous optical film at a temperature around room temperature, a composition containing a smectic liquid crystal compound having a 1,4-cyclohexyl group, which smectic liquid crystal compound having the 1,4-cyclohexyl group contains (i) 100 parts by mass of a smectic liquid crystal compound having a trans-1,4-cyclohexyl group and (ii) 0.1 parts by mass to 10 parts by mass of a smectic liquid crystal compound having a cis-1,4-cyclohexyl group.Type: GrantFiled: July 21, 2016Date of Patent: February 11, 2020Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Nobuyuki Hatanaka, Haruki Okawa
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Patent number: 10513612Abstract: A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; m, p, and q are each independently an integer of 0 to 2; and R5 is (i) a C1-C10 alkyl group in which a hydrogen atom is substituted by at least one hydroxy group or (ii) a C1-C10 alkyl group which has carbon atoms and in which at least one —O— is inserted between the carbon atoms.Type: GrantFiled: February 17, 2016Date of Patent: December 24, 2019Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 10514484Abstract: A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound of formula (1), R1 represents a hydrogen atom or the like; R2 represents a hydrogen atom or the like; R3 represents a hydrogen atom or the like; Z represents —CO— or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; P1 and P2 each independently represent —S— or the like; and Q1 and Q2 each independently represent ?N— or the like.Type: GrantFiled: October 14, 2015Date of Patent: December 24, 2019Assignee: Sumitomo Chemical Company, LimitedInventors: Noriyuki Hida, Haruki Okawa
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Publication number: 20190276744Abstract: A liquid crystal composition is provided containing a first liquid crystal compound represented by formula (1): and a second liquid crystal compound represented by formula (2): Also provided is a method for producing the liquid crystal composition having a desired wavelength dispersion characteristic.Type: ApplicationFiled: May 28, 2019Publication date: September 12, 2019Inventors: Noriyuki HIDA, Haruki OKAWA
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Patent number: 10336938Abstract: A liquid crystal composition containing a polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain and a polymer (B) of the polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain, which inhibits occurrence of an orientation defect of a liquid crystal compound and exhibits excellent storage stability when dissolved in a solvent is provided.Type: GrantFiled: March 27, 2017Date of Patent: July 2, 2019Assignee: Sumitomo Chemical Company, LimitedInventors: Shinnosuke Yoshioka, Haruki Okawa, Daichi Fujimoto, Tatsuaki Kasai
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Patent number: 10160734Abstract: A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound of formula (1), R1 represents an alkyl group having 1 to 20 carbon atoms or the like; R2 represents an acyl group having 1 to 20 carbon atoms or the like; R3 represents a hydrogen atom or the like; and Y represents a group of formula (Y1). In the formula (Y1), * represents a bonding site with N, or a group of formula (Y2). In the formula (Y2), * represents a bonding site with N; P1 and P2 each independently represent —S— or the like; and Q1 and Q2 each independently represent ?N— or the like.Type: GrantFiled: October 14, 2015Date of Patent: December 25, 2018Assignee: Sumitomo Chemical Company, LimitedInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 10029982Abstract: The object of the present invention is to provide a light absorptive compound which is capable of selectively absorbing light around a wavelength of 400 nm, and is excellent in solubility in various solvents and/or affinity with hydrophobic substances. Also, the object of the present invention is to provide an optical film containing such a light absorptive compound, and a cured layer.Type: GrantFiled: December 27, 2016Date of Patent: July 24, 2018Assignee: Sumitomo Chemical Company, LimitedInventors: Katsuaki Miyazaki, Haruki Okawa, Daichi Fujimoto, Shinnosuke Yoshioka
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Patent number: 10023743Abstract: A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; n, m, and p are each independently an integer of 0 to 2; and Ar1 represents a nitrogen-containing saturated heterocyclic group which is a 5 to 8-membered ring and in which (i) N is bonded to a phenylene group and (ii) at least one ?-position is an oxygen atom or a sulfur atom.Type: GrantFiled: February 17, 2016Date of Patent: July 17, 2018Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Noriyuki Hida, Haruki Okawa
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Patent number: 10005960Abstract: Provided is a composition which is to be a raw material of a polarizing film having excellent light fastness. The composition includes a polymerizable liquid crystal compound and a compound represented by the following formula (1): wherein E represents an electron attractive group having at least 3 carbon atoms or the following group: wherein R represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms; Ar represents a group selected from the following groups: and A represents a group selected from the following groups: wherein R2, R3 and R4, and l, m, n, p, and q are defined in the specification.Type: GrantFiled: October 27, 2016Date of Patent: June 26, 2018Assignee: Sumitomo Chemical Company, LimitedInventors: Noriyuki Hida, Haruki Okawa
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Publication number: 20180072890Abstract: A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; m, p, and q are each independently an integer of 0 to 2; and R5 is (i) a C1-C10 alkyl group in which a hydrogen atom is substituted by at least one hydroxy group or (ii) a C1-C10 alkyl group which has carbon atoms and in which at least one —O— is inserted between the carbon atoms.Type: ApplicationFiled: February 17, 2016Publication date: March 15, 2018Inventors: Noriyuki HIDA, Haruki OKAWA
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Publication number: 20180037739Abstract: A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1): In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; n, m, and p are each independently an integer of 0 to 2; and Ar1 represents a nitrogen-containing saturated heterocyclic group which is a 5 to 8-membered ring and in which (i) N is bonded to a phenylene group and (ii) at least one ?-position is an oxygen atom or a sulfur atom.Type: ApplicationFiled: February 17, 2016Publication date: February 8, 2018Inventors: Noriyuki HIDA, Haruki OKAWA
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Publication number: 20180030354Abstract: A composition is provided which contains a compound represented by Formula (1) below and a polymerizable smectic liquid crystal compound: In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 each independently represent a C1-C4 alkyl group; n, p, and q are each independently an integer of 0 to 2; and R5 is (i) a nitrogen-containing saturated heterocyclic group which is a 6-membered ring and in which N is bonded to a phenylene group, or (ii) a group in which N is bonded to at least one C1-C10 alkyl group.Type: ApplicationFiled: February 17, 2016Publication date: February 1, 2018Inventors: Noriyuki HIDA, Haruki OKAWA
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Publication number: 20170306234Abstract: A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).Type: ApplicationFiled: April 20, 2017Publication date: October 26, 2017Inventors: Daichi FUJIMOTO, Haruki OKAWA, Shinnosuke YOSHIOKA, Tatsuaki KASAI
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Publication number: 20170283700Abstract: A liquid crystal composition containing a polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain and a polymer (B) of the polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain, which inhibits occurrence of an orientation defect of a liquid crystal compound and exhibits excellent storage stability when dissolved in a solvent is provided.Type: ApplicationFiled: March 27, 2017Publication date: October 5, 2017Inventors: Shinnosuke YOSHIOKA, Haruki OKAWA, Daichi FUJIMOTO, Tatsuaki KASAI
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Publication number: 20170242169Abstract: A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound of formula (1), R1 represents a hydrogen atom or the like; R2 represents a hydrogen atom or the like; R3 represents a hydrogen atom or the like; Z represents —CO— or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; P1 and P2 each independently represent —S— or the like; and Q1 and Q2 each independently represent ?N— or the like.Type: ApplicationFiled: October 14, 2015Publication date: August 24, 2017Inventors: Noriyuki HIDA, Haruki OKAWA
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Publication number: 20170240810Abstract: A compound having a maximum absorption in a wavelength range of 350 nm to 550 nm that functions as a dichroic dye is provided. In particular, a compound represented by formula (1) is provided. In the compound represented by formula (1), R1 represents a hydrogen atom or the like; R2 represents an acyl group having 1 to 20 carbon atoms or the like; R3 represents a hydrogen atom or the like; and Y represents a group of formula (Y1). In the group of formula (Y1), * represents a bonding site with N, or a group of formula (Y2); and in the group of formula (Y2), * represents a bonding site with N; P1 and P2 each independently represent —S— or the like; and Q1 and Q2 each independently represent ?N— or the like.Type: ApplicationFiled: October 14, 2015Publication date: August 24, 2017Applicant: Sumitomo Chemical Company, LimitedInventors: Noriyuki HIDA, Haruki OKAWA