Jeffry A. Helmick — 5 Patents at General Motors

Jeffry A. Helmick has been granted 5 US patents while listed as an inventor at General Motors. The first was granted in 2003 and the most recent in November 2015. Jeffry A. Helmick ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Jeffry A. Helmick in Oakland Charter Township, MI, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
9181844	Diagnostic system and method for an oxygen sensor positioned downstream from a catalytic converter	Stephen Paul Levijoki, Michael John Dokter, John W. Siekkinen	2015-11-10	$14,726,000
8583349	Systems and methods for diagnosing oxygen sensors and catalytic converters of exhaust systems	Igor Anilovich, John W. Siekkinen, Wesley W. Wald, Robert J. Genslak, John F. Van Gilder	2013-11-12	$9,193,000
8086392	Post oxygen sensor performance diagnostic with minimum air flow	Igor Anilovich, Richard B. Jess, John W. Siekkinen, Christopher E. Whitney, Robert C. Simon, Jr.	2011-12-27	$11,936,000
7900439	Exhaust system monitoring methods and systems	Robert J. Genslak, Igor Anilovich, Justin F. Adams, Edward Stuteville, Wesley W. Wald +1 more	2011-03-08	$10,094,000
6586711	Current control method for an oxygen sensor heater	Christopher E. Whitney, Yonas Nebiyeloul-Kifle, Bradley E. De Pottey	2003-07-01

Jeffry A. Helmick — 5 Patents

Issued Patents All Time

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