The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
Jul. 08, 2010
James M. Tour, Bellaire, TX (US);
Howard K. Schmidt, Cypress, TX (US);
Jay R. Lomeda, Houston, TX (US);
Dmitry V. Kosynkin, Houston, TX (US);
Condell D. Doyle, Nocona, TX (US);
James M. Tour, Bellaire, TX (US);
Howard K. Schmidt, Cypress, TX (US);
Jay R. Lomeda, Houston, TX (US);
Dmitry V. Kosynkin, Houston, TX (US);
Condell D. Doyle, Nocona, TX (US);
William Marsh Rice University, Houston, TX (US);
Abstract
Drilling fluids comprising graphenes and nanoplatelet additives and methods for production thereof are disclosed. Graphene includes graphite oxide, graphene oxide, chemically-converted graphene, and functionalized chemically-converted graphene. Derivatized graphenes and methods for production thereof are disclosed. The derivatized graphenes are prepared from a chemically-converted graphene through derivatization with a plurality of functional groups. Derivatization can be accomplished, for example, by reaction of a chemically-converted graphene with a diazonium species. Methods for preparation of graphite oxide are also disclosed.