Epitaxial wafer of gallium arsenide phosphide
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 12, 1998
Issued Date -
N/A
app pub date -
Feb 18, 1997
filing date -
Jul 28, 1992
priority date (Note) -
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Abstract
In an epitaxial wafer of gallium arsenide phosphide, a single crystal substrate is provided thereon with a gallium arsenide phosphide layer with a varying mixed crystal ratio, a gallium arsenide phosphide layer with a constant mixed crystal ratio, and a nitrogen-doped gallium arsenide phosphide layer with a constant mixed crystal ratio. The nitrogen-doped gallium arsenide phosphide layer with a constant mixed crystal ratio has a carrier concentration of 3.times.10.sup.15 cm.sup.-3 or less.
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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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MITSUBISHI KASEI CORPORATION | TOKYO |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Imai, Megumi | Ushiku, JP | 9 | 43 |
# of filed Patents : 9 Total Citations : 43 | |||
Sato, Tadashige | Ushiku, JP | 8 | 34 |
# of filed Patents : 8 Total Citations : 34 | |||
Takahashi, Tsuneteru | Ushiku, JP | 1 | 4 |
# of filed Patents : 1 Total Citations : 4 |
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Patent Citation Ranking
- 4 Citation Count
- H01L Class
- 1.19 % this patent is cited more than
- 27 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 |
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