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:
Apr. 18, 2023
Filed:
Nov. 29, 2017
Applicant:
Bnnt, Llc, Newport News, VA (US);
Inventors:
Thomas G. Dushatinski, Chesapeake, VA (US);
Kevin C. Jordan, Newport News, VA (US);
Michael W. Smith, Newport News, VA (US);
R. Roy Whitney, Newport News, VA (US);
Jonathan C. Stevens, Williamsburg, VA (US);
Assignee:
BNNT, LLC, Newport News, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/02 (2006.01); C01B 21/064 (2006.01); C04B 35/583 (2006.01); C01B 35/08 (2006.01); C01B 35/14 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
C01B 21/0648 (2013.01); C01B 35/08 (2013.01); C01B 35/146 (2013.01); C04B 35/583 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2004/01 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/13 (2013.01);
Abstract
Disclosed herein are processes for purifying as-synthesized boron nitride nanotube (BNNT) material to remove impurities of boron, amorphous boron nitride (a-BN), hexagonal boron nitride (h-BN) nanocages, h-BN nanosheets, and carbon-containing compounds. The processes include heating the BNNT materials at different temperatures in the presence of inert gas and a hydrogen feedstock or in the presence of oxygen.