Spark plug

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United States of America Patent

PATENT NO 9178336
APP PUB NO 20140134912A1
SERIAL NO

14157251

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A spark plug is provided having a resistor. The resistor is made from resistor glass material containing an alkali free barium alumino-silicate glass mixed with mullite. In one embodiment, the resistor is a 15 to 30 wt % alkali free barium alumino-silicate glass and 10 to 25 wt % mullite. The resistor material provides for a greater processing kiln temperature range with reduced resistor variability and improved durability performance.

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Patent Owner(s)

Patent OwnerAddress
JEFFERIES FINANCE LLC520 MADISON AVENUE 16TH FLOOR NEW YORK NY 10022

International Classification(s)

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  • 2014 Application Filing Year
  • H01T Class
  • 202 Applications Filed
  • 183 Patents Issued To-Date
  • 90.60 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20142015201620172018201920200255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boehler, Jeffrey T Holland, US 26 125
Zheng, Jing Findlay, US 73 849

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  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges4369201 - 1011 - 2021 - 3001020302.557.512.51517.522.52527.532.53537.540

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