Patents by Inventor ANDRE GEIM
ANDRE GEIM 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: 10583407Abstract: This invention relates to barrier materials comprising reduced graphene oxide, methods of making said materials and their uses. The reduced graphene oxide is preferably formed from the reduction of graphene oxide by HI, HBr or ascorbic acid.Type: GrantFiled: March 26, 2015Date of Patent: March 10, 2020Assignee: The University of ManchesterInventors: Rahul Raveendran-Nair, Yang Su, Andre Geim
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Publication number: 20200061546Abstract: The invention relates to graphene oxide laminate membranes that are physically constrained. The physical constraint limits the size of the capillaries in the laminate, allowing them to be tailored to a particular application. This invention also relates to methods of purifying water using said membranes and methods of making said membranes.Type: ApplicationFiled: November 30, 2017Publication date: February 27, 2020Inventors: Rahul Raveendran-Nair, Jijp Abranbam, Andre Geim
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Publication number: 20180071692Abstract: This invention relates to uses of graphene oxide, and in particular graphene oxide on a porous support, and a membrane comprising these materials. This invention also relates to methods of dehydration, which include vapour phase separation and pervaporation. Pervaporation is a method of separating mixtures of liquids using a membrane. Pervaporation consists of two basic steps: permeation of the permeate through the membrane and evaporation of the permeate from the other side of the membrane. Pervaporation is a mild which can be used to separate components which would not survive the comparatively harsh conditions needed for distillation (high temp, and/or low pressure).Type: ApplicationFiled: November 15, 2017Publication date: March 15, 2018Inventors: Rahul Raveendran NAIR, Peter BUDD, Andre Geim
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Patent number: 9844758Abstract: This invention relates to uses of graphene oxide, and in particular graphene oxide on a porous support, and a membrane comprising these materials. This invention also relates to methods of dehydration, which include vapour phase separation and pervaporation. Pervaporation is a method of separating mixtures of liquids using a membrane. Pervaporation consists of two basic steps: permeation of the permeate through the membrane and evaporation of the permeate from the other side of the membrane. Pervaporation is a mild which can be used to separate components which would not survive the comparatively harsh conditions needed for distillation (high temp, and/or low pressure).Type: GrantFiled: August 14, 2013Date of Patent: December 19, 2017Assignee: The University of ManchesterInventors: Rahul Nair, Peter Budd, Andre Geim
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Publication number: 20170106342Abstract: This invention relates to barrier materials comprising reduced graphene oxide, methods of making said materials and their uses. The reduced graphene oxide is preferably formed from the reduction of graphene oxide by HI, HBr or ascorbic acid.Type: ApplicationFiled: March 26, 2015Publication date: April 20, 2017Inventors: Rahul RAVEENDRAN-NAIR, Yang SU, Andre GEIM
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Patent number: 9548364Abstract: This application relates to graphene based heterostructures and methods of making graphene based heterostructures. The graphene heterostructures comprise: i) a first encapsulation layer; ii) a second encapsulation layer; and iii) a graphene layer. The heterostructures find application in electronic devices.Type: GrantFiled: March 22, 2012Date of Patent: January 17, 2017Assignee: The University of ManchesterInventors: Andre Geim, Kostya Novoselov, Roman Gorbachev, Leonid Ponomarenko
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Publication number: 20160297693Abstract: This invention relates to methods of purifying water using forward osmosis, with a graphene oxide laminate acting as a semi-permeable membrane. The laminate is formed from stacks of individual graphene oxide flakes which may be predominantly monolayer thick. The methods of the invention find particular application in the desalination of salt water.Type: ApplicationFiled: November 20, 2014Publication date: October 13, 2016Applicant: THE UNIVERSITY OF MANCHESTERInventors: Rahul RAVEENDRAN-NAIR, Rakesh K. JOSHI, Andre GEIM
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Publication number: 20160280563Abstract: This invention relates to methods of purifying water using graphene oxide laminates which are formed from stacks of individual graphene oxide flakes which may be predominantly monolayer thick. The graphene oxide laminates may act as membrans which exclude large solutes i.e. with a hydration radius above about 4.5 ? or they may act as sorbents to absorb solutes having a hydration radius less than about 4.7 ?.Type: ApplicationFiled: November 20, 2014Publication date: September 29, 2016Inventors: Rahul RAVEENDRAN-NAIR, Rakesh K. JOSHI, Andre GEIM
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Patent number: 9318591Abstract: This application relates to graphene based heterostructures and transistor devices comprising graphene. The hetero-structures comprise i) a first graphene layer; ii) a spacer layer and iii) a third graphene. The transistors comprise (i) an electrode, the electrode comprising a graphene layer, and (ii) an insulating barrier layer.Type: GrantFiled: March 22, 2012Date of Patent: April 19, 2016Assignee: The University of ManchesterInventors: Andre Geim, Konstantin Novoselov, Roman Gorbachev, Leonid Ponomarenko, Liam Britnell
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Publication number: 20150231577Abstract: This invention relates to uses of graphene oxide, and in particular graphene oxide on a porous support, and a membrane comprising these materials. This invention also relates to methods of dehydration, which include vapour phase separation and pervaporation. Pervaporation is a method of separating mixtures of liquids using a membrane. Pervaporation consists of two basic steps: permeation of the permeate through the membrane and evaporation of the permeate from the other side of the membrane. Pervaporation is a mild which can be used to separate components which would not survive the comparatively harsh conditions needed for distillation (high temp, and/or low pressure).Type: ApplicationFiled: August 14, 2013Publication date: August 20, 2015Applicant: THE UNIVERSITY OF MANCHESTERInventors: Rahul Nair, Peter Budd, Andre Geim
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Patent number: 9017474Abstract: The present invention relates to the novel material fluorographene (FG), methods of making fluorographene, and its applications in electronics and related fields. The fluorographene also finds use in improving the properties of composite materials by incorporating the fluorographene of the invention with one or more materials such as fluoropolymers (FP) and the like. Conventionally, FP inter-chain interactions are very weak but spread over the area of FG, FG is able to act as a very effective and compatible reinforcement.Type: GrantFiled: June 10, 2011Date of Patent: April 28, 2015Assignee: The University of ManchesterInventors: Andre Geim, Rahul Raveendran-Nair, Kostya Novoselov
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Publication number: 20140008611Abstract: This application relates to graphene based heterostructures and methods of making graphene based heterostructures. The graphene heterostructures comprise: i) a first encapsulation layer; ii) a second encapsulation layer; and iii) a graphene layer. The heterostructures find application in electronic devices.Type: ApplicationFiled: March 22, 2012Publication date: January 9, 2014Applicant: THE UNIVERSITY OF MANCHESTERInventors: Andre Geim, Kostya Novoselov, Roman Gorbachev, Leonid Ponomarenko
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Publication number: 20140008616Abstract: This application relates to graphene based heterostructures and transistor devices comprising graphene. The hetero-structures comprise i) a first graphene layer; ii) a spacer layer and iii) a third graphene. The transistors comprise (i) an electrode, the electrode comprising a graphene layer, and (ii) an insulating barrier layer.Type: ApplicationFiled: March 22, 2012Publication date: January 9, 2014Applicant: THE UNIVERSITY OF MANCHESTERInventors: Andre Geim, Kostya Novoselov, Roman Gorbachev, Leonid Ponomarenko, L. Britnell
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Publication number: 20110303121Abstract: The present invention relates to the novel material fluorographene (FG), methods of making fluorographene, and its applications in electronics and related fields. The fluorographene also finds use in improving the properties of composite materials by incorporating the fluorographene of the invention with one or more materials such as fluoropolymers (FP) and the like. Conventionally, FP inter-chain interactions are very weak but spread over the area of FG, FG is able to act as a very effective and compatible reinforcement.Type: ApplicationFiled: June 10, 2011Publication date: December 15, 2011Applicant: The University of ManchesterInventors: ANDRE GEIM, Rahul Raveendran-Nair, Kostya Novoselov