Micro-multiport tubing and method for making said tubing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Sep 12, 2002
app pub date -
Jan 11, 2001
filing date -
Jan 11, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention is a process for making improved micro-multiport tubing for use in heat exchangers. A multivoid heat exchanger tube is extruded from aluminum alloy billet. The alloy is a composition of cooperative elements which act with the aluminum to prevent recrystallization and grain growth which result in the necessary strength and duality of characteristics in the tubes. The composition of the alloy that is added to aluminum is some or all of the following: silicon, iron, copper, magnesium, manganese, zinc and titanium. The cold work during processing of the heat exchanger is limited to further retain the small grains.
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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BRAZEWAY INC | A MICHIGAN CORPORATION 2711 EAST MAUMEE STREET ADRIAN MI 49221 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Kraft, Frank F | Adrian, MI | 8 | 32 |
# of filed Patents : 8 Total Citations : 32 |
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Patent Citation Ranking
- 5 Citation Count
- F16L Class
- 1.64 % this patent is cited more than
- 23 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 |
---|---|---|---|
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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