Low to medium pressure high temperature all-ceramic air to air indirect heat exchangers with novel ball joints and assemblies
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United States of America Patent
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Nov 9, 1999
Issued Date -
N/A
app pub date -
Dec 28, 1997
filing date -
Oct 26, 1995
priority date (Note) -
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Abstract
What is disclosed herein deals with low to medium pressure, high temperature, all ceramic, air-to-air, indirect heat exchangers, novel ball joints; connecting slip ring collars for ceramic tubes, that are useful in such heat exchangers, systems comprising several heat exchangers or systems comprising heat exchangers that are fabricated such that they provide more efficient heat exchangers than has been possible heretofore.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NEXTERRA SYSTEMS CORP | 1300 - 650 WEST GEORGIA STREET P O BOX 11582 VANCOUVER V6B 4N8 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Graham, Robert G | 6027 E. Grand Lake Rd., Presque Isle, MI 49777 | 65 | 1483 |
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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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