Spark plug with improved seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 13, 2018
Issued Date -
N/A
app pub date -
Aug 1, 2016
filing date -
Aug 10, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electrically conductive glass seal for providing a hermetic bond between an electrically conductive component and an insulator of a spark plug is provided. The glass seal is formed by mixing glass frits, binder, expansion agent, and electrically conductive metal particles. The glass frits can include silica (SiO2), boron oxide (B2O3), aluminum oxide (Al2O3), bismuth oxide (Bi2O3), and zinc oxide (ZnO); the binder can include sodium bentonite or magnesium aluminum silicate, polyethylene glycol (PEG), and dextrin; the expansion agent can include lithium carbonate; and the electrically conductive particles can include copper. The finished glass seal includes the glass in a total amount of 50.0 to 90.0 weight (wt. %), and electrically conductive metal particles in an amount of 10.0 to 50.0 wt. %, based on the total weight of the glass seal.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- C03C Class
- 1063 Applications Filed
- 726 Patents Issued To-Date
- 68.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C03C Class
- 0 % 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 | Aug 13, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 13, 2029 |
