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:
Oct. 04, 2016
Filed:
Dec. 26, 2013
Changjun Zhou, Naperville, IL (US);
Richard D. Nelson, Littleton, CO (US);
Changjun Zhou, Naperville, IL (US);
Richard D. Nelson, Littleton, CO (US);
Superior Graphite Co., Chicago, IL (US);
Abstract
A carbonaceous particulate material is provided that is characterized by having a reversible volumetric expansion/contraction in fluid media ('V') of greater than or equal to (≧)3% between 4,000 psi and 10,000 psi. The porous carbonaceous particulate material of the present disclosure is also characterized by having a true density, ('P'), of 1.2 g/cc≦P≦2.0 g/cc, when milled to −200 mesh and has a dparticle size distribution of about 15 μm. This is the consequence of the instant material exhibiting a high level of closed porosity with very small pores, in contrast with prior art materials that would have a wider range pore sizes for the closed pores.