Patents by Inventor Neetu Chopra
Neetu Chopra 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).
-
Patent number: 10217938Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: GrantFiled: January 19, 2017Date of Patent: February 26, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Christopher T. Brown, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Patent number: 9978473Abstract: A method including combining at least one first compound in a neutral form with at least one ionic dopant in a first solvent system to provide a first doped reaction product, isolating the first doped reaction product in solid form, and combining the isolated first doped reaction product with at least one conjugated polymer in neutral form in a second solvent system to form a second doped reaction product including an oxidized form of the conjugated polymer a neutral form of the first compound is described. Advantages include better stability, ease of use, and lower metal content. Applications include organic electronic devices including OLEDs.Type: GrantFiled: October 3, 2012Date of Patent: May 22, 2018Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Venkataramanan Seshadri, Neetu Chopra
-
Publication number: 20170186953Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: ApplicationFiled: January 19, 2017Publication date: June 29, 2017Inventors: Christopher T. BROWN, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Patent number: 9577194Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: GrantFiled: July 1, 2011Date of Patent: February 21, 2017Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Christopher T. Brown, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Patent number: 9397294Abstract: Improved OLED devices and methods of making the same using vertical phase separation to simplify processing. Vertically phase separated material can include at least one lower first layer disposed on the electrode, and at least one upper second layer different from the first layer and disposed away from the electrode or optionally on one layer comprising at least one semiconducting organic material. The first layer can be enriched with at least one first semiconducting organic material (SOM 1) and the second layer can be enriched with at least one second semiconducting organic material (SOM 2) different from the SOM 1. The ink composition can be adapted so that the film vertically phase separates into the first and second layers. Compositions and devices are also embodied herein.Type: GrantFiled: June 29, 2012Date of Patent: July 19, 2016Assignee: SOLVAY USA, INC.Inventors: Christopher T. Brown, Neetu Chopra, Venkataramanan Seshadri, Jing Wang
-
Patent number: 8815639Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: GrantFiled: April 23, 2013Date of Patent: August 26, 2014Assignee: Solvay USA, Inc.Inventors: Christopher T. Brown, Neetu Chopra, Christopher Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Patent number: 8535974Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: GrantFiled: July 1, 2011Date of Patent: September 17, 2013Assignee: Plextronics, Inc.Inventors: Christopher T. Brown, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Publication number: 20130009137Abstract: Improved OLED devices and methods of making the same using vertical phase separation to simplify processing. Vertically phase separated material can include at least one lower first layer disposed on the electrode, and at least one upper second layer different from the first layer and disposed away from the electrode or optionally on one layer comprising at least one semiconducting organic material. The first layer can be enriched with at least one first semiconducting organic material (SOM 1) and the second layer can be enriched with at least one second semiconducting organic material (SOM 2) different from the SOM 1. The ink composition can be adapted so that the film vertically phase separates into the first and second layers. Compositions and devices are also embodied herein.Type: ApplicationFiled: June 29, 2012Publication date: January 10, 2013Inventors: Christopher T. Brown, Neetu Chopra, Venkataramanan Seshadri, Jing Wang
-
Publication number: 20120003790Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: ApplicationFiled: July 1, 2011Publication date: January 5, 2012Inventors: Christopher T. Brown, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth
-
Publication number: 20120001127Abstract: A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.Type: ApplicationFiled: July 1, 2011Publication date: January 5, 2012Inventors: Christopher T. Brown, Neetu Chopra, Christopher R. Knittel, Mathew Mathai, Venkataramanan Seshadri, Jing Wang, Brian Woodworth