Hot surface igniters and methods of making same
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United States of America Patent
Stats
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Oct 15, 2014
filing date -
Oct 15, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
First Claim
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International Classification(s)
- 2014 Application Filing Year
- C04B Class
- 1184 Applications Filed
- 1032 Patents Issued To-Date
- 87.17 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C04B Class
- 38.42 % this patent is cited more than
- 7 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 | Oct 24, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 24, 2029 |
