Method for manufacturing monocrystalline graphene
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United States of America Patent
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Dec 5, 2017
Issued Date -
N/A
app pub date -
Dec 26, 2014
filing date -
Dec 30, 2013
priority date (Note) -
In Force
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Abstract
The present invention provides a method for manufacturing a monocrystalline graphene layer, comprising the steps of: forming polycrystalline graphene on a substrate by using a hydrocarbon gas to grow a graphene layer aligned on a wafer-scale insulator substrate in one direction like a monocrystal; forming a catalyst on the polycrystalline graphene; and recrystallizing the polycrystalline graphene to monocrystalline graphene by heat-treating the polycrystalline graphene and the catalyst.
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 | |
---|---|---|
KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE | DAEJEON DAEJEON |
International Classification(s)

- 2014 Application Filing Year
- C23C Class
- 2649 Applications Filed
- 2034 Patents Issued To-Date
- 76.79 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hwang, Chanyong | Seoul, KR | 3 | 11 |
# of filed Patents : 3 Total Citations : 11 |
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Patent Citation Ranking
- 0 Citation Count
- C23C Class
- 0 % this patent is cited more than
- 8 Age
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Maintenance Fees
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 5, 2025 |
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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

Legal Events
Date | Code | Event | Description |
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Feb 22, 2010 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jan 27, 2010 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jan 27, 2010 |
Jan 27, 2010 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Aug 03, 2009 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jul 21, 2005 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jul 04, 2001 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 06, 1998 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jan 27, 1998 | I | Issuance | |
Apr 01, 1996 | F | Filing | |
Apr 01, 1996 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EKHOLM, ROLF;JANSSON, ULF;NYSTROM, PER;REEL/FRAME:007994/0323;SIGNING DATES FROM 19960307 TO 19960318 Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG, SWEDEN |
Oct 13, 1993 | PD | Priority Date |

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