Patents Examined by Rachel Kahn
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Patent number: 11866551Abstract: The present invention provides a composition containing an electron-donating polymer (D) and an electron-withdrawing polymer (A), wherein the electron-donating polymer (D) has a constitutional unit represented by the following formula (1a), Y1a in the following formula (1a) is a divalent group represented by the following formula (3a), and the electron-withdrawing polymer (A) has a constitutional unit represented by the following formula (4a): wherein the symbols in the formulas are as described in the DESCRIPTION.Type: GrantFiled: February 8, 2019Date of Patent: January 9, 2024Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masamichi Nishihara, Shiyan Feng, Byungchan Hwang, Liana Christiani, Kazunari Sasaki, Shoichi Kondo, Taichi Nakazawa, Takamasa Kikuchi
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Patent number: 11840607Abstract: The invention relates to cross-linkable thermoplastics, processes of making such cross-linkable thermoplastics and products comprising such cross-linkable thermoplastics. Such cross-linkable thermoplastics provide articles made by the additive manufacturing (AM) process with increased strength, the desired in use temperature stability and the desired thermo-oxidative stability.Type: GrantFiled: January 27, 2020Date of Patent: December 12, 2023Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, David H. Wang, Zhenning Yu, Hilmar Koerner
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Patent number: 11807715Abstract: Techniques regarding the synthesis of one or more polymers through one or more ring-opening polymerizations conducted within a flow reactor and facilitated by one or more anionic catalysts are provided. For example, one or more embodiments can comprise a method, which can comprise polymerizing, via a ring-opening polymerization within a flow reactor, a cyclic monomer in the presence of one or more anionic organocatalysts.Type: GrantFiled: August 11, 2021Date of Patent: November 7, 2023Assignees: International Business Machines Corporation, THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOInventors: Nathaniel H. Park, James L. Hedrick, Victoria A. Piunova, Dmitry Zubarev, Gavin O. Jones, Robert M. Waymouth, Binhong Lin
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Patent number: 11739628Abstract: Methods of determining the integrity of a well are provided. The methods include mixing conductive materials into a fluid, introducing the fluid into the well, and allowing the conductive materials to coat a surface of a subsurface formation, thereby forming an electrically conductive data conduit coating. The methods further include transmitting data through the electrically conductive data conduit coating to determine the integrity of the well.Type: GrantFiled: July 21, 2020Date of Patent: August 29, 2023Assignee: Saudi Arabian Oil CompanyInventors: Peter J. Boul, Ashok Santra
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Patent number: 11718715Abstract: The invention relates to a method for preparing polybenzimidazoles of formula (1) or (2) below, wherein n is ?2: by polycondensation of corresponding dicarboxylic acids or dialdehydes and tetraamines by jointly heating the reactants, characterized in that the preparation of polybenzimidazoles of formula (1) or (2) is carried out by using the dialdehydes as starting material and substantially without the formation of any intermediates, wherein a) first, the dialdehyde and the tetraamine are mixed in water at room temperature, which results in the formation of a polyimine by-product; whereafter b) polycondensation is carried out under hydrothermal conditions by heating, in water as a solvent and under pressure, to temperatures above 100° C.Type: GrantFiled: September 5, 2018Date of Patent: August 8, 2023Assignee: TECHNISCHE UNIVERSITÄT WIENInventors: Miriam Margarethe Unterlass, Michael J. Taublaender, Sophia Thiele
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Patent number: 11643502Abstract: A method for preparing a high molecular weight furan polyamide includes the following steps: 1) charging dimethyl furan dicarboxylate and aliphatic diamine into a reaction container at equal molar weight, and increasing the temperature to 60-120° C. under inert gas; 2) adding a catalyst when the reaction system becomes transparent liquid, increasing the temperature to 140-150° C., and keeping at an atmospheric pressure or a pressure of 41-61 kPa for 0-1 h; and then increasing the temperature to 190-200° C. and reacting for 1-3 h; and 3) depressurizing the system to 3-16 kPa for 0-3 h; and finally, reducing the pressure to 0.003-0.100 KPa for 1-3 h to obtain the high molecular weight furan polyamide.Type: GrantFiled: June 15, 2022Date of Patent: May 9, 2023Assignee: SICHUAN UNIVERSITYInventors: Jie Yang, Shuang Xie, Meilin Zhang, Zhimei Wei, Xiaojun Wang
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Patent number: 11626038Abstract: The present application provides a flexible substrate and a method of manufacturing the same. The flexible substrate includes a base substrate, the flexible substrate is a polyimide film, wherein the polyimide film comprises polyimide having a structural formula of and the polyimide has a rigid segment and a flexible segment. The polyimide film is divided into rigid regions and a flexible region, wherein the rigid region is mainly constituted by the rigid segment, and the flexible region is mainly constituted by the flexible segment. Because the polyimide has the rigid segment and the flexible segment, it is used in flexible substrates.Type: GrantFiled: February 19, 2020Date of Patent: April 11, 2023Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Linshuang Li
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Patent number: 11535709Abstract: Embodiments in accordance with the present invention encompass polyamic acid or polyimide polymers containing a reactive maleimide end group as well as photosensitive compositions made therefrom which are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. In some embodiments the compositions of this invention are shown to feature excellent hitherto unachievable mechanical properties. The negative images formed therefrom exhibit improved thermo-mechanical properties, among other property enhancements.Type: GrantFiled: March 5, 2020Date of Patent: December 27, 2022Assignee: PROMERUS, LLCInventors: Pramod Kandanarachchi, Cheryl Burns, Brian Knapp, Larry F Rhodes
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Patent number: 11525035Abstract: The present disclosure provides a leaching process and resulting composition which prevents or substantially reduces agglomeration of polyamide 6/66 copolymers. The leaching process includes applying hot water in the presence of an agglomeration inhibitor to the polyamide 6/66 copolymers in order to separate unreacted caprolactam and small molecular weight oligomers from the copolymers while preventing or substantially reducing agglomeration of the copolymers.Type: GrantFiled: April 18, 2018Date of Patent: December 13, 2022Assignee: AdvanSix Resins & Chemicals LLCInventor: Veera Nelliappan
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Patent number: 11525037Abstract: A tetracarboxylic dianhydride represented by the following general formula (1): [in the formula (1), R1, R2, and R3 each independently represent a hydrogen atom and the like, and n represents an integer of 0 to 12], wherein a ratio of a summed amount of a specific stereoisomer (A) and a specific stereoisomer (B) is 50% by mole or more relative to a total amount of stereoisomers based on three-dimensional configurations of two norbornane rings in the general formula (1), and a content ratio of the stereoisomer (A) is 30% by mole or more relative to the total amount of the stereoisomers.Type: GrantFiled: April 23, 2018Date of Patent: December 13, 2022Assignee: ENEOS CORPORATIONInventors: Shinichi Komatsu, Asako Kyobu
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Patent number: 11505652Abstract: A polyetherimide of improved color and processes for preparing the polyetherimide are disclosed.Type: GrantFiled: November 18, 2019Date of Patent: November 22, 2022Assignee: SHPP GLOBAL TECHNOLOGIES B.V.Inventors: Thomas Guggenheim, Jose Roman Galdamez, Javier Nieves Remacha, Juan J. Rodriguez Ordonez, Maria Patricia Forcen Jimenez, Hareesh Shamrao Deshpande, Surya Prakasa Rao Daliparthi, Sunil S. Dhumal, Sivakumar Periyasamy, Srinivas Mahesh Kumar, Siva Kumar Sreeramagiri, Bernabe Quevedo Sanchez
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Patent number: 11499011Abstract: A polyimide oligomer of formula (1a), (1b), a copolymer thereof, or a combination thereof wherein each G1 is independently the same or different, and is a cation group; each G2 is independently the same or different, and is an anion group; each D is independently the same or different, and is a single bond or C1-20 divalent hydrocarbon group; each V is independently the same or different, and is a tetravalent C4-40 hydrocarbon group; each R is independently the same or different, and is a C1-20 divalent hydrocarbon group; each n is independently the same or different, and is 1 to 1000, provided that the total of all values of n is greater than 4; and t is 2 to 1000.Type: GrantFiled: December 30, 2019Date of Patent: November 15, 2022Assignee: SHPP GLOBAL TECHNOLOGIES B.V.Inventors: Roy Ray Odle, Ke Cao, Guoliang Liu, Timothy Edward Long
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Patent number: 11479632Abstract: The present disclosure provides a polymer film, a method of preparing the same, and a flexible folded panel. The polymer film includes a substrate and a strengthening layer, wherein the strengthening layer includes a polymer, side chains of the polymer include a plurality of rigid segments and a plurality of flexible segments, which modify and strengthen the side chains of the polymer. The monomer of the polymer is subjected to a series of reactions, to synthesize the polymer, and the polymer film enhance hardness of a cover plate of a panel and improve the anti-friction properties and bendability.Type: GrantFiled: November 4, 2019Date of Patent: October 25, 2022Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Yuan Zhao
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Patent number: 11421079Abstract: A method for controlling a polyimide backbone structure, including: in preparation of a polyimide through reaction of a diamine component and (1S,2R,4S,5R)-cyclohexanetetracarboxylic dianhydride in an organic solvent containing an aprotic amide solvent and a lactone solvent, adjusting one or more of reaction conditions of a mass ratio of the aprotic amide solvent and the lactone solvent, a reaction temperature, a reaction time, and an amount of the aprotic amide solvent, so as to convert a cis-structure derived from the (1S,2R,4S,5R)-cyclohexanetetracarboxylic dianhydride in the formed polyimide to a trans-structure derived from (1R,2S,4S,5R)-cyclohexanetetracarboxylic dianhydride corresponding to the reaction conditions, thereby controlling a proportion of the trans-structure.Type: GrantFiled: February 24, 2017Date of Patent: August 23, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Teruhisa Matsumaru, Yohei Abiko, Shuya Suenaga
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Patent number: 11407857Abstract: A method for producing an aqueous polyimide precursor solution composition includes forming a polyamic acid by the reaction of a tetracarboxylic acid component and a diamine component in an aqueous solvent together with an imidazole in an amount of 1.6 mole or more per mole of the tetracarboxylic acid component of the polyamic acid.Type: GrantFiled: March 27, 2020Date of Patent: August 9, 2022Assignee: Ube Industries, Ltd.Inventors: Takeshige Nakayama, Susumu Takasaki, Tomonori Nakayama, Kensuke Hiroshige
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Patent number: 11407868Abstract: A method for producing an aqueous polyimide precursor solution includes forming a polyamic acid by the reaction of a tetracarboxylic acid component and a diamine component in water without organic solvent together with an imidazole in an amount of 1.6 mole or more per mole of the tetracarboxylic acid component of the polyamic acid.Type: GrantFiled: March 27, 2020Date of Patent: August 9, 2022Assignee: Ube Industries, Ltd.Inventors: Takeshige Nakayama, Susumu Takasaki, Tomonori Nakayama, Kensuke Hiroshige
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Patent number: 11401418Abstract: A method for producing an aqueous polyimide precursor solution composition includes reacting a tetracarboxylic dianhydride and a diamine in the presence of an imidazole, using water as a reaction solvent to provide an aqueous polyimide precursor solution composition. The polyamic acid and the imidazole are dissolved in the water. A concentration of the polyamic acid is 5 to 45 wt %, The imidazole is an imidazole having two or more alkyl groups as substituents. An amount of the imidazole is 1.6 moles or more per mole of the tetracarboxylic dianhydride, and a concentration of the imidazole compound based on a sum of the imidazole compound and the water is 9.47 wt % or less. The diamine component includes a diamine having a solubility in water at 25° C. of 0.1 g/L or more.Type: GrantFiled: March 26, 2020Date of Patent: August 2, 2022Assignee: Ube Industries, Ltd.Inventors: Takeshige Nakayama, Tomonori Nakayama, Susumu Takasaki, Akira Kawabata, Kenji Sonoyama
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Patent number: 11384205Abstract: Methods of making sequence-defined polymers and sequence-defined polymers. The methods are based on the orthogonal reactivity of monomers having at least two different functional groups. The sequence-defined polymers can be used in various applications. For example, the SDPs (e.g., pH sensitive SDPs) are used in cell lysis methods or as molecular vehicles to transport drug cargo into cells.Type: GrantFiled: December 10, 2019Date of Patent: July 12, 2022Assignee: CORNELL UNIVERSITYInventors: Christopher Akinleye Alabi, Mintu Porel
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Patent number: 11345782Abstract: A polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent including the same, a liquid crystal alignment film formed from the liquid crystal alignment agent, and a liquid crystal display device including the liquid crystal alignment film are provided.Type: GrantFiled: September 20, 2018Date of Patent: May 31, 2022Assignee: LG CHEM, LTD.Inventors: Soon Ho Kwon, Seongku Kim, Sung Joon Min, Hang Ah Park, Jun Young Yoon, Jung Ho Jo
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Patent number: 11339289Abstract: A polyimide precursor solution contains a polyimide precursor, wherein in the case where the polyimide precursor is analyzed by gel permeation chromatography, the elution curve of the polyimide precursor has a region A including a higher-molecular-weight peak and a region B including a lower-molecular-weight peak; a weight average molecular weight determined from the region A in terms of polystyrene is approximately 10,000 or more, and a weight average molecular weight determined from the region B in terms of polystyrene is approximately less than 10,000; and when the area of the region A is a and the area of the region B is b, the polyimide precursor satisfies Equation (1) a/(a+b)=approximately from 0.70 to 0.98.Type: GrantFiled: March 9, 2018Date of Patent: May 24, 2022Assignee: FUJIFILM Business Innovation Corp.Inventors: Kenji Kajiwara, Wataru Yamada