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:
Dec. 05, 2000
Filed:
Aug. 23, 1993
John M Branan, Jr, Amarillo, TX (US);
Bin Chung, Nashua, NH (US);
Frank J Hrach, Jr, Parkersberg, WV (US);
Ronald C Hurst, Pampa, TX (US);
David J Kaul, Pampa, TX (US);
Sergio A Montes, Nashua, NH (US);
William L Sifleet, Acton, MA (US);
Daniel W Weaver, Amarillo, TX (US);
Jay Zimmer, Pampa, TX (US);
Cabot Corporation, Boston, MA (US);
Abstract
A process for producing carbon blacks comprised of mixing an oxidant, primary fuel, and carbon black feedstock to form carbon black particles and aggregates, passing the mixture through a reactor, cooling, separating, and recovering the carbon black product. The improvement comprises the addition of a secondary oxidant-containing stream to the reactor such that the secondary oxidant stream does not interfere with the formation of the carbon black particles and aggregates in the reactor. Also disclosed are new carbon black products defined by the following parameters: