Patents Examined by Blaine G Doletski
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Patent number: 11970438Abstract: There is provided a compound having a structure represented by the following Formula (1), in Formula (1), R1 and R2 each independently represent a phenyl group having a substituent or an unsubstituted phenyl group, R3 and R4 each independently represent a C2-C12 alkyl group having a substituent or an unsubstituted C2-C12 alkyl group, a cyano group, a trifluoromethyl group, or a halogen atom, R5 and R6 each independently represent a hydrogen atom or an alkyl group, R7 represents a phenyl group having a substituent, an unsubstituted phenyl group, or a heteroaromatic group having a specific structure, and X? represents an anion, and in a case where at least one anionic substituent is included in a molecule, X? may not be present.Type: GrantFiled: April 15, 2021Date of Patent: April 30, 2024Assignee: Canon Kabushiki KaishaInventors: Ai Hayakawa, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
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Patent number: 11958800Abstract: The invention relates to a method for preparation of (meth)acrylic acid esters from (meth)acrylic acid anhydrides. Wherein the method for preparation of the (meth)acrylic acid ester, comprises at least step (a) as follows: (a) reacting a (meth)acrylic acid anhydride of Formula (I): wherein R1 is a hydrogen atom or a methyl group; with a substrate in the presence of a first catalyst to form a product mixture comprising the (meth)acrylic acid ester; and wherein: the substrate is selected from the group consisting of: primary alcohols; secondary alcohols; tertiary alcohols; and phenols; and the first catalyst comprises a salt of magnesium or of a rare earth element.Type: GrantFiled: July 31, 2019Date of Patent: April 16, 2024Assignee: Evonik Operations GmbHInventors: Marcel Treskow, Silvia Beyer, Thorben Schutz, Steffen Krill
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Patent number: 11958798Abstract: The present invention relates to a process for the preparation of iloprost of formula I through new intermediates, isolation of iloprost of formula I in solid form, as well as preparation of the 16(S)-iloprost and 16(R)-iloprost isomers of formulae (S)-I and (R)-I and isolation of iloprost of formula I and 16(S)-iloprost of formula (S)-I in solid, crystalline form.Type: GrantFiled: October 25, 2022Date of Patent: April 16, 2024Assignee: EUROAPI HUNGARY LIMITED LIABILITY COMPANYInventors: Imre Rozsumberszki, Zsuzsanna Kardos, Irén Hortobágyi, Tibor Szabó, Csaba Váradi, Tamás Bán
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Patent number: 11958801Abstract: A process for process for preparing 6-isopropenyl-3-methyl-9-decenyl acetate of the following formula (3), wherein Ac represents an acetyl group, the process comprising steps of: preparing a nucleophilic reagent, 5-isopropenyl-2-methyl-8-nonenyl compound, of the following general formula (1): wherein M1 represents Li, MgZ1, ZnZ1, Cu, CuZ1, or CuLiZ1, wherein Z1 represents a halogen atom or a 5-isopropenyl-2-methyl-8-nonenyl group, from a 5-isopropenyl-2-methyl-8-nonenyl halide compound of the following general formula (4): wherein X1 represents a halogen atom; subjecting the nucleophilic reagent (1), 5-isopropenyl-2-methyl-8-nonenyl compound, to an addition reaction with at least one electrophilic reagent selected from the group consisting of formaldehyde, paraformaldehyde, and 1,3,5-trioxane, followed by a hydrolysis reaction to form 6-isopropenyl-3-methyl-9-decenol of the following formula (2); and acetylating 6-isopropenyl-3-methyl-9-decenol (2) to form 6-isopropenyl-3-methyl-9-decenyl acetate (3).Type: GrantFiled: January 13, 2023Date of Patent: April 16, 2024Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Akihiro Baba, Takeshi Kinsho, Yusuke Nagae
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Patent number: 11945909Abstract: The invention relates to a method for producing a polycarbonate and the reaction of one or more diaryl carbonates with one or more aromatic compounds, wherein a catalyst combination is used in the process. The invention further relates to a catalyst combination and to the use thereof in a process for producing a polycarbonate.Type: GrantFiled: October 12, 2017Date of Patent: April 2, 2024Assignee: EPC Engineering & Technologies GMBHInventor: Michael Streng
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Patent number: 11939288Abstract: A process for producing alkyl methacrylates, in particular methyl methacrylate (MMA), includes production of methacrolein (MAL) in a first reaction stage; direct oxidative esterification (DOE) of the methacrolein with an alcohol, preferably methanol, to afford an alkyl methacrylate in a second reaction stage; and workup of the alkyl methacrylate crude product from the second reaction stage. An optimized workup of the reactor output from the oxidative esterification of methacrolein involves minimizing the amount of employed water, the amount of employed acid, and/or the amount of aqueous waste streams, through an optimized recycling of the generated process water streams.Type: GrantFiled: November 23, 2022Date of Patent: March 26, 2024Assignee: Röhm GmbHInventors: Florian Zschunke, Belaid Ait Aissa, Andreas Rühling, Gerhard Kölbl, Steffen Krill, Daniel Helmut König
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Patent number: 11939287Abstract: The present disclosure provides methods and processes for the recovery of compounds (e.g., pendant groups) from polymeric materials, as well as methods for recycling and reusing such compounds by synthetically converting a recovered compound to building blocks that can be used in, e.g., curable resins for the fabrication of new devices, such as medical devices (e.g., orthodontic appliances).Type: GrantFiled: June 24, 2022Date of Patent: March 26, 2024Assignee: Align Technology, Inc.Inventor: Umesh Upendra Choudhary
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Patent number: 11932598Abstract: The present invention addresses the problem of providing a novel compound which readily dissolves in liquid epoxy resins and which can be a hardener for epoxy resins to give cured objects excellent in terms of heat resistance and chemical resistance. Provided as a means for solving the problem is a polyacyloxymethyl-4,4?-acyloxybiphenyl compound represented by formula (1).Type: GrantFiled: July 3, 2019Date of Patent: March 19, 2024Assignee: HONSHU CHEMICAL INDUSTRY CO., LTD.Inventor: Akihito Nasu
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Patent number: 11932662Abstract: The present invention relates to a method for preparing glufosinate or an analogue and an intermediate thereof. The method comprises: a) reacting a compound of formula (II), an alcohol of formula (III) and a compound of formula (V); and b) hydrolyzing the product of the reaction above to obtain glufosinate of formula (IV) or an analogue thereof.Type: GrantFiled: May 1, 2023Date of Patent: March 19, 2024Assignee: LIER CHEMICAL CO., LTD.Inventors: Yongjiang Liu, Min Xu, Lei Zhou, Wei Zeng, Ke Cheng
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Patent number: 11932591Abstract: In the embodiments, an aqueous hydrochloric acid solution instead of hydrogen chloride gas and solid triphosgene instead of phosgene gas may be used in the process of preparing a diisocyanate from a diamine through a diamine hydrochloride. In addition, the embodiments provide processes for preparing a diisocyanate composition and an optical lens of higher quality by controlling the water content in the diamine hydrochloride composition for preparing a diisocyanate within a specific range.Type: GrantFiled: January 27, 2022Date of Patent: March 19, 2024Assignees: SKC CO., LTD., WOORI FINE CHEM CO., LTD.Inventors: Jaeyoung Pai, Jeongmoo Kim, Hyuk Hee Han, Jung Hwan Myung, Jooyoung Jung, Myung-Ok Kyun
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Patent number: 11926588Abstract: The invention relates to the production of (meth)acrylic esters according to a process by direct esterification, and in particular to the purification of a crude reaction mixture comprising a C4-C12 (meth)acrylic ester using a dividing wall column employed in a particular configuration. The dividing wall column is equipped with a separating wall creating separation zones in the column, the wall not being joined to the upper dome of the column in the top part and being joined to the bottom of the column in the bottom part. The process according to the invention guarantees a product of very high purity, independently of the back-cracking reactions of the heavy by-products liable to arise during the purification of the product sought.Type: GrantFiled: January 21, 2020Date of Patent: March 12, 2024Assignee: Arkema FranceInventors: Serge Tretjak, Yves Cabon, Andre Levray, Camille Hilpert, Anne Moreliere
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Patent number: 11905239Abstract: A process can be used for producing methacrylic acid or a methacrylic acid ester. The process involves producing acrolein, reacting the produced acrolein with hydrogen to produce propanal, reacting the propanal with formaldehyde to produce methacrolein, and oxidizing the methacrolein in the presence of an oxygen containing gas and optionally an alcohol, to obtain methacrylic acid or methacrylic acid ester.Type: GrantFiled: November 17, 2022Date of Patent: February 20, 2024Assignee: Röhm GmbHInventors: Alexander May, Steffen Krill, Marcel Treskow, Diego Carambia, Gabriel Avella
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Patent number: 11897841Abstract: Provided is an isomerization method of cyclohexane dicarboxylic acid using zirconia or titania as an isomerization catalyst.Type: GrantFiled: May 21, 2019Date of Patent: February 13, 2024Assignee: HANWHA SOLUTIONS CORPORATIONInventors: Jong Kwon Lee, Eun Jeong Kim, Sun Uk Lee, Nam Jin Jang
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Patent number: 11884617Abstract: Provided is an acetic acid production method that enables smooth reduction and/or increase of acetic acid production with easy operation and can industrially efficiently, stably produce acetic acid with maintained quality even when the acetic acid production volume is changed. The acetic acid production method includes a carbonylation step in which methanol is reacted with carbon monoxide in a continuous system in the presence of a catalytic system, acetic acid, methyl acetate, and water, where the catalytic system includes a metal catalyst and methyl iodide. The carbonylation step employs two or more reactors disposed in parallel.Type: GrantFiled: July 2, 2018Date of Patent: January 30, 2024Assignee: DAICEL CORPORATIONInventor: Masahiko Shimizu
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Patent number: 11884618Abstract: The invention relates to a method for preparation of (meth)acrylic acid esters from (meth)acrylic acid anhydrides. The method involves: reacting a (meth)acrylic acid anhydride of Formula (I): wherein R1 is a hydrogen atom or a methyl group; with a substrate in the presence of a first catalyst to form a product mixture comprising the (meth)acrylic acid ester; and wherein: the substrate is selected from the group consisting of: primary alcohols; secondary alcohols; tertiary alcohols; and phenols; and the first catalyst comprises a salt of magnesium or of a rare earth element.Type: GrantFiled: May 20, 2022Date of Patent: January 30, 2024Assignee: Evonik Operations GmbHInventors: Marcel Treskow, Silvia Beyer, Thorben Schütz, Steffen Krill
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Patent number: 11873273Abstract: A method of producing an organic peroxide includes introducing an organic solution and a peroxide solution into a mixing tank to form a mixture. The method further includes circulating the mixture over a fixed catalyst bed to form the organic peroxide and measuring a concentration of the organic peroxide in the mixture. Further, the method includes removing at least a portion of the mixture when the concentration reaches a set value.Type: GrantFiled: March 28, 2019Date of Patent: January 16, 2024Assignee: SAFE FOODS CORPORATIONInventors: Todd Coleman, Tim Yeaman, Slaton Fry
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Patent number: 11873278Abstract: A method for preparing a low migration plasticizer of di-2-ethylhexyl terephthalate is provided. The method includes a step of adding a short chain alcohol component having 4 to 6 carbon atoms and a long chain alcohol component having 9 to 13 carbon atoms in an esterification reaction between terephthalic acid and 2-ethylhexanol, so as to obtain a modified di-2-ethylhexyl terephthalate including residues derived from the short chain alcohol component and the long chain alcohol component. The esterification reaction is carried out under a temperature from 30° C. to 225° C. and a pressure from 80 mbar to 1033 mbar.Type: GrantFiled: August 10, 2021Date of Patent: January 16, 2024Assignee: NAN YA PLASTICS CORPORATIONInventors: Te-Chao Liao, Jung-Jen Chuang, Chung-Yu Chen, Hsun-Min Lin
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Patent number: 11866387Abstract: A process for producing methacrylic acid or a methacrylic acid ester including, producing acrolein, reacting the produced acrolein with hydrogen to produce propanal, reacting the propanal with formaldehyde to produce methacrolein, and oxidizing the methacrolein in the presence of an oxygen containing gas and optionally an alcohol, to methacrylic acid or a methacrylic acid ester.Type: GrantFiled: July 11, 2019Date of Patent: January 9, 2024Assignee: Röhm GmbHInventors: Alexander May, Steffen Krill, Marcel Treskow, Diego Carambia, Gabriel Avella
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Patent number: 11866398Abstract: This invention relates generally to the synthesis of ?12-Prostaglandin J product using stereoretentive ruthenium olefin metathesis catalysts supported by dithiolate ligands. ?12-Prostaglandin J products were generated with excellent selectivity (>99% Z) and in moderate to high/good yields (47% to 80% yield; 58% to 80% yield).Type: GrantFiled: May 14, 2019Date of Patent: January 9, 2024Assignee: California Institute of TechnologyInventors: Jiaming Li, Xu Chen, Tonia S. Ahmed, Brian M. Stoltz, Robert H. Grubbs
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Patent number: 11852970Abstract: A material for lithography containing a tellurium-containing compound or a tellurium-containing resin, a production method therefor, a composition for lithography, a pattern formation method, a compound, a resin, and a method for purifying the compound or the resin are provided. The compounds and materials can provide for high solubility in a safe solvent.Type: GrantFiled: August 23, 2016Date of Patent: December 26, 2023Assignees: Mitsubishi Gas Chemical Company, Inc., A School Corporation Kansai UniversityInventors: Hiroto Kudo, Masatoshi Echigo, Takumi Toida, Takashi Sato