John E. Letcher — 7 Patents at Chrysler Group

John E. Letcher has been granted 7 US patents while listed as an inventor at Chrysler Group. The first was granted in 1993 and the most recent in February 1998. John E. Letcher ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list John E. Letcher in Chelsea, MI, US.

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Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5715799	Method of leak detection during low engine vacuum for an evaporative emission control system	William B. Blomquist, Gary Dawson, Roland T. Richardson, Glen E. Tallarek, Mark E. Hope	1998-02-10	$44,735,000
5651349	Purge system flow monitor and method	Gregory J. Dykstra, Mark E. Hope, Kim M. Person, James M. Witalec	1997-07-29	$23,102,000
5651350	Method of leak detection for an evaporative emission control system	William B. Blomquist, Gary Dawson, Roland T. Richardson, Glen E. Tallarek, Mark E. Hope	1997-07-29	$23,102,000
5606121	Method of testing an evaporative emission control system	William B. Blomquist, Gary Dawson, Roland T. Richardson, Glen E. Tallarek, Mark E. Hope	1997-02-25	$70,743,000
5520162	Boiloff for a flexible fuel compensation system	William D. Rotramel, Joseph B. Adams, Robert J. Nankee, II	1996-05-28	$48,122,000
5415145	Start fuel decay for a flexible fuel compensation system	Stuart M. Davis	1995-05-16	$26,668,000
5255661	Method for determining fuel composition using oxygen sensor feedback control	Robert J. Nankee, II	1993-10-26	$151,732,000

John E. Letcher — 7 Patents

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