Harwood; Jon W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harwood; Jon W..The latest application filed is for "equal length y-collector".
- Harwood; Jon W. - Toledo OH US
| Patent | Date |
|---|---|
| Equal length Y-collector Grant 8,402,756 - Luce , et al. March 26, 2 | 2013-03-26 |
| Equal Length Y-collector App 20090266066 - Luce; David R. ; et al. | 2009-10-29 |
| Muffler with internal heat shield Grant 7,273,129 - Harwood September 25, 2 | 2007-09-25 |
| Muffler with internal heat shield App 20050051383 - Harwood, Jon W. | 2005-03-10 |
| Method of manufacturing an exhaust muffler with stamp formed internal components Grant 5,907,904 - Gerber , et al. June 1, 1 | 1999-06-01 |
| Muffler with stamped internal plates defining tubes and separating chambers Grant 5,859,394 - Seehaus , et al. January 12, 1 | 1999-01-12 |
| Automotive bumper and muffler combination Grant 5,726,398 - Zahn , et al. March 10, 1 | 1998-03-10 |
| Exhaust mufflers with stamp formed internal components and method of manufacture Grant 5,717,173 - Gerber , et al. February 10, 1 | 1998-02-10 |
| Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell Grant 5,448,831 - Harwood September 12, 1 | 1995-09-12 |
| Stamp formed muffler with low back pressure Grant 5,173,577 - Clegg , et al. December 22, 1 | 1992-12-22 |
| Stamp formed muffler with compound reinforcement pattern for preventing shell ring Grant 5,164,551 - Harwood , et al. November 17, 1 | 1992-11-17 |
| Stamp formed muffler with transverse baffle tube Grant 5,004,069 - Van Blaircum , et al. April 2, 1 | 1991-04-02 |
| Process for manufacturing stamp formed mufflers Grant 4,928,372 - Harwood , et al. May 29, 1 | 1990-05-29 |
| Stamp formed muffler with reinforced outer shell Grant 4,924,968 - Moring, III , et al. May 15, 1 | 1990-05-15 |
| Stamp formed exhaust muffler with conformal outer shell Grant 4,909,348 - Harwood , et al. March 20, 1 | 1990-03-20 |
| Stamp formed muffler and catalytic converter assembly Grant 4,894,987 - Harwood , et al. January 23, 1 | 1990-01-23 |
| Method of manufacturing stamp formed mufflers Grant 4,847,965 - Harwood , et al. July 18, 1 | 1989-07-18 |
| Stamp formed exhaust muffler with conformal outer shell Grant 4,821,840 - Harwood , et al. April 18, 1 | 1989-04-18 |
| Apparatus for machining a bent elongated member of variable configuration Grant 4,806,726 - Rosa , et al. February 21, 1 | 1989-02-21 |
| Stamp formed muffler with multiple low frequency resonating chambers Grant 4,765,437 - Harwood , et al. * August 23, 1 | 1988-08-23 |
| Tube and chamber construction for an exhaust muffler Grant 4,759,423 - Harwood , et al. * July 26, 1 | 1988-07-26 |
| Precision bending apparatus and process Grant 4,732,025 - Marlinga , et al. March 22, 1 | 1988-03-22 |
| Clamp apparatus Grant 4,712,295 - Peele , et al. December 15, 1 | 1987-12-15 |
| Method for forming an air gap pipe Grant 4,656,713 - Rosa , et al. * April 14, 1 | 1987-04-14 |
| Air gap pipe Grant 4,619,292 - Harwood October 28, 1 | 1986-10-28 |
| Method for fabricating an air gap pipe Grant 4,590,652 - Harwood May 27, 1 | 1986-05-27 |
| Hybrid exhaust manifold Grant 4,537,027 - Harwood , et al. August 27, 1 | 1985-08-27 |
| Air gap pipe Grant 4,501,302 - Harwood February 26, 1 | 1985-02-26 |
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