Method for preparing uniform single walled carbon nanotubes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 31, 2011
Grant Date -
Nov 13, 2008
app pub date -
Mar 29, 2007
filing date -
Mar 29, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of preparing single walled carbon nanotubes from a metal catalyst having deposited thereon fullerenes are provided. Fullerenes are deposited onto a metal catalyst precursor or metal catalyst. In the presence of a carbon containing gas, the metal catalyst precursor/fullerene composition is then exposed to conditions suitable for reducing the metal catalyst precursor, for subliming the fullerene and for growing single walled carbon nanotubes. The fullerenes form the end caps for the resulting single walled carbon nanotubes, which are uniform in diameter.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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HYPERION CATALYSIS INTERNATIONAL INC | 38 SMITH PLACE CAMBRIDGE MA 02138 |
International Classification(s)

- 2007 Application Filing Year
- D01C Class
- 13 Applications Filed
- 10 Patents Issued To-Date
- 76.93 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Ma, Jun | Lexington, US | 756 | 4916 |
# of filed Patents : 756 Total Citations : 4916 | |||
Tennent, Howard | Kennett Square, US | 32 | 1527 |
# of filed Patents : 32 Total Citations : 1527 |
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Patent Citation Ranking
- 31 Citation Count
- D01C Class
- 87.50 % this patent is cited more than
- 14 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Jan 17, 2013 | P | Published | |
Sep 27, 2012 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NISHIKUBO, YUICHI;OHNUMA, KENJI;MORITA, KIYOKAZU;AND OTHERS;SIGNING DATES FROM 20120912 TO 20120914;REEL/FRAME:029039/0032 Owner name: KONICA MINOLTA MEDICAL & GRAPHIC, INC., JAPAN |
Feb 23, 2011 | F | Filing | |
Mar 31, 2010 | PD | Priority Date |

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