Gas separation membrane, gas separation module, gas separation apparatus, and gas separation method
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United States of America Patent
Stats
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Nov 19, 2019
Grant Date -
Jan 25, 2018
app pub date -
Aug 17, 2017
filing date -
Feb 27, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A gas separation membrane has a gas separation layer containing a poly(benzoxazole-imide) compound in which the poly(benzoxazole-imide) compound having structural units represented by General formulae (I) and (II), or structural units represented by General formulae (I), (II) and (III) satisfies a specific molar quantity condition.
First Claim
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP6521052 | Feb 03, 2016 |
| WO | A1 | WO2016136404 | Feb 03, 2016 |
International Classification(s)
- 2017 Application Filing Year
- C01B Class
- 2099 Applications Filed
- 1477 Patents Issued To-Date
- 70.37 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C01B Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 19, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 19, 2031 |
