Daniel J Dreyer

US Patent:

20120111791, May 10, 2012

Filed:

Nov 4, 2010

Appl. No.:

12/939764

Inventors:

Benny D. Freeman - Austin TX, US
Daniel J. Miller - Austin TX, US
Bryan D. McCloskey - Campbell CA, US
Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

B01D 65/08
B05D 5/00
B01D 71/06

US Classification:

21050034, 21050033, 427244

Abstract:

The present invention includes methods and compositions for liquid separation and water purification. The present invention includes a purification membrane having a polymer matrix purification membrane that has been treated with hydroquinone, catechol, and/or dopamine coated membrane with a high water flux.

US Patent:

20130123514, May 16, 2013

Filed:

May 27, 2011

Appl. No.:

13/700430

Inventors:

Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US
Hong-Peng Jia - Villeurbanne Cedex, FR

Assignee:

GRAPHEA, INC. - Austin TX

International Classification:

C07C 315/02
C07C 45/28
C07C 319/24
C07D 333/22
C07C 45/29
C07C 45/30
C07C 201/12

US Classification:

549 72, 25218311, 568323, 568322, 568306, 568361, 549 70, 568 26, 568 22, 568 25, 564430, 568 23, 568 24, 568 27, 568 37

Abstract:

The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in a variety of chemical transformations. In one embodiment, it relates to a method of catalyzing a chemical reaction of an organic molecule by reacting the organic molecule in the presence of a sufficient amount of graphene oxide or graphite oxide for a time and at a temperature sufficient to allow catalysis of a chemical reaction. According to other embodiments, the reaction may be an oxidation reaction, a hydration reaction, a dehydrogenation reaction, a condensation reaction, or a polymerization reaction. Some reactions may include auto-tandem reactions. The disclosure further provides reaction mixtures containing an organic molecule and graphene oxide or graphite oxide in an amount sufficient to catalyze a reaction of the organic molecule.

US Patent:

20130149211, Jun 13, 2013

Filed:

May 27, 2011

Appl. No.:

13/700432

Inventors:

Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US

Assignee:

GRAPHEA, INC. - Austin TX

International Classification:

B01J 31/04
B01J 19/00

US Classification:

422198, 549543, 422211, 422223

Abstract:

A carbocatalyst for use in oxidation and polymerization reactions includes particles having a carbon and oxygen-containing material, such as catalytically-active graphene oxide and/or catalytically-active graphite oxide. In some cases, the particles are disposed on a solid support formed of a carbon-containing material, such as graphene or graphite, or a non-carbon containing material, such as a metallic or insulating material.

US Patent:

20140011972, Jan 9, 2014

Filed:

Feb 7, 2012

Appl. No.:

13/984010

Inventors:

Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US

Assignee:

GRAPHEA, INC. - Austin TX

International Classification:

C08F 4/32
C08G 61/10
C08G 63/82
C08G 69/04

US Classification:

526204, 528336, 528214, 528397, 528355, 528317

Abstract:

Provided herein are novel processes for synthesis of polymers and/or polymer composites.

US Patent:

20110080689, Apr 7, 2011

Filed:

Sep 3, 2010

Appl. No.:

12/875880

Inventors:

Christopher W. Bielawski - Austin TX, US
Rodney S. Ruoff - Austin TX, US
Dileep K. Agnihotri - Round Rock TX, US
Daniel R. Dreyer - Austin TX, US
Meryl D. Stoller - Austin TX, US
Yanwu Zhu - Austin TX, US

International Classification:

H01G 9/155
C01B 31/00

US Classification:

361502, 4234151

Abstract:

One embodiment of the current disclosure provides an ultracapacitor including at least one graphene-based electrode, an electrolyte containing an ionic liquid, and a dielectric separator dividing the ultracapacitor into two chambers, each chamber containing an electrode and a portion of the electrolyte. In another embodiment, the graphene has been expanded by exposure to microwave radiation then chemically activated. Another embodiment of the current disclosure provides an electrochemical energy storage device containing such an ultracapacitor. Still other embodiments of the disclosure relate to ionic liquids, some of which may be suitable for use in an ultracapacitor, methods of synthesizing such liquids, and methods of designing such liquids. Further embodiments relate to methods of using ultracapacitors, for example in automobiles, power grids, high-temperature applications, and other applications.

US Patent:

20150025289, Jan 22, 2015

Filed:

May 23, 2012

Appl. No.:

14/119809

Inventors:

Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US
Richard Miller - Portola Valley CA, US

Assignee:

Graphea, Inc. - Austin TX

International Classification:

C07C 5/333
B01J 27/20

US Classification:

585654

Abstract:

The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in production of propene.

US Patent:

20140275684, Sep 18, 2014

Filed:

May 23, 2012

Appl. No.:

14/119808

Inventors:

Christopher W. Bielawski - Austin TX, US
Daniel R. Dreyer - Austin TX, US
Richard Miller - Portola Valley CA, US

Assignee:

Graphea, Inc. - Austin TX

International Classification:

C07C 6/10
C07C 2/76
C07C 4/06
C07C 5/333

US Classification:

585653, 585654, 585700, 585708, 585752

Abstract:

The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in a variety of high value chemical transformations.