
US Patent No: 7,807,478
Number of patents in Portfolio can not be more than 2000
Nonvolatile memory device and fabrication method thereof
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Oct 5, 2010
Issued date -
Jan 20, 2010
filing date -
12/690,831
serial no -
In Force
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Abstract
A nonvolatile memory device and its fabrication method of the present invention may ensure a margin of the threshold drive voltage during a design process of the device by forming a resistance layer determining phase of ReRAM along an upper edge of a lower electrode, and improve operating characteristics of the device
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,621,730 Magnetic random access memory having a vertical write line | 27 | 2002 | |
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| 7,619,237 Programmable resistive memory cell with self-forming gap | 2 | 2007 | |
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| 2006/0170,027 Nonvolatile memory device made of resistance material and method of fabricating the same | 22 | 2005 | |
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| 2006/0273,298 Rewriteable memory cell comprising a transistor and resistance-switching material in series | 74 | 2005 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Apr 5, 2014 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 5, 2018 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 5, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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