Cheng; C. Raymond

Patent Applications and Registrations

Patent applications and USPTO patent grants for Cheng; C. Raymond.The latest application filed is for "infinitely variable aftertreatment systems and manufacturing process".

Company Profile

0.9.8

Cheng; C. Raymond - Madison WI

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Exhaust aftertreatment mixer with stamped muffler flange Grant 7,533,520 - Cheng , et al. May 19, 2	2009-05-19
Tubular acoustic silencer Grant 7,497,301 - Cheng , et al. March 3, 2	2009-03-03
Performance air filtration cartridge Grant 7,377,954 - Gunderson , et al. May 27, 2	2008-05-27
Infinitely variable aftertreatment systems and manufacturing process App 20080069742 - Toy; David ; et al.	2008-03-20
Exhaust aftertreatment mixer with stamped muffler flange App 20070245718 - Cheng; C. Raymond ; et al.	2007-10-25
Tubular acoustic silencer App 20060180389 - Cheng; C. Raymond ; et al.	2006-08-17
Performance air filtration cartridge App 20060162303 - Gunderson; Larry T. ; et al.	2006-07-27
Multi-frequency engine intake resonator Grant 6,814,041 - Cheng , et al. November 9, 2	2004-11-09
Exhaust aftertreatment device, including chemical mixing and acoustic effects Grant 6,722,123 - Liu , et al. April 20, 2	2004-04-20
Exhaust aftertreatment device with flow diffuser Grant 6,712,869 - Cheng , et al. March 30, 2	2004-03-30
Exhaust aftertreatment device with flow diffuser App 20030159414 - Cheng, C. Raymond ; et al.	2003-08-28
Multi-stage diesel particulate collector system with combined processes of inertial impaction, virtual impaction, and filtration Grant 6,576,045 - Liu , et al. June 10, 2	2003-06-10
Exhaust aftertreatment device, including chemical mixing and acoustic effects App 20030079467 - Liu, Z. Gerald ; et al.	2003-05-01
Regenerable filter with localized and efficient heating Grant 6,540,816 - Allie , et al. April 1, 2	2003-04-01
Multi-stage diesel particulate collector system with combined processes of inertial impaction, virtual impaction, and filtration App 20030047074 - Liu, Z. Gerald ; et al.	2003-03-13
Regenerable Filter With Localized And Efficient Heating App 20030037674 - Allie, Mark C. ; et al.	2003-02-27
Active exhaust silencer Grant 5,541,373 - Cheng July 30, 1	1996-07-30

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