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:
Mar. 23, 2004
Filed:
Oct. 11, 2001
Khaled Mahmud, Natick, MA (US);
Meng-Jiao Wang, Lexington, MA (US);
Yakov Kutsovsky, Arlington, MA (US);
Cabot Corporation, Boston, MA (US);
Abstract
An aggregate including a carbon phase and a silicon-containing species phase is described, wherein a difference between BET (N ) surface area and t-area of the aggregate is from about 2 to 10 m /g; a difference between BET (N ) surface area and t-area of from about 1 to 50 m /after HF treatment; a ratio of from about 0.1 to 10; a weight average aggregate size measured by DCP after HF treatment that is reduced by about 5% to 40%; a silica ash content in the aggregate of from about 0.05% to 1% based on the weight of the aggregate after HF treatment and based on ash resulting from silicon-containing compound; and a BET surface area of silica ash in the aggregate of from about 200 m /g to 700 m /g, wherein the silicon-containing species phase is present primarily at the surface of the aggregate.