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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
DONGGUAN SHENGLITAI PACKAGING PRODUCTS CO LTD	DONGGUAN

International Classification(s)

• 1901:WRITING PAPER, CARDS FOR CORRESPONDENCE AND ANNOUN....

• 2023 Application Filing Year
• 1901 Class
• 17 Applications Filed
• 17 Patents Issued To-Date
• 100 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Li, Jianping	Dongguan, CN	80	301
# of filed Patents : 80 Total Citations : 301

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Patent Citation Ranking

• 1 Citation Count
• 1901 Class

• 54.55 % this patent is cited more than
• 2 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Feb 28, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Feb 28, 2031
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Full Text

US Patent No: 9825229

Purification of carbon nanotubes via selective heating

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Abstract

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The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.

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Description

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Claims

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Legal Events

 

• MAFP2021
• I2017
• AS2017
• STCF2017
• AS2016
• P2016
• F2014

Date	Code	Event	Description
May 21, 2021	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4
Nov 21, 2017	I	Issuance
Nov 21, 2017	AS	ASSIGNMENT	free format text: CONFIRMATORY LICENSE;ASSIGNOR:UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN;REEL/FRAME:045739/0875 Owner name: UNITED STATES DEPARTMENT OF ENERGY, DISTRICT OF CO Effective Date: Nov 21, 2017
Nov 01, 2017	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Nov 17, 2016	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ROGERS, JOHN A.;WILSON, WILLIAM L.;JIN, SUNG HUN;AND OTHERS;SIGNING DATES FROM 20140421 TO 20161116;REEL/FRAME:040645/0251 Owner name: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOI free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ROGERS, JOHN A.;WILSON, WILLIAM L.;JIN, SUNG HUN;AND OTHERS;SIGNING DATES FROM 20140421 TO 20161116;REEL/FRAME:040645/0251 Owner name: UNIVERSITY OF MIAMI, FLORIDA free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ROGERS, JOHN A.;WILSON, WILLIAM L.;JIN, SUNG HUN;AND OTHERS;SIGNING DATES FROM 20140421 TO 20161116;REEL/FRAME:040645/0251 Owner name: NORTHWESTERN UNIVERSITY, ILLINOIS
May 12, 2016	P	Published
Apr 03, 2014	F	Filing