Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7601194 | Asymmetric honeycomb wall-flow filter having improved structural strength | Douglas Munroe Beall, Weiguo Miao | 2009-10-13 |
| 7247184 | Asymmetric honeycomb wall-flow filter having improved structural strength | — | 2007-07-24 |
| 7162787 | Method for constructing a honeycomb extrusion die | — | 2007-01-16 |
| 7112050 | Extrusion die for making a double-skin honeycomb substrate | James Joseph Bernas, Thomas William Brew, Mark Lee Humphrey, Weiguo Miao, Kenneth Richard Miller +3 more | 2006-09-26 |
| 6089014 | Engine exhaust system with reduced hydrocarbon emissions | John P. Day, Louis S. Socha, Jr., Irwin M. Lachman, Mallanagouda Dyamanagouda Patil | 2000-07-18 |
| 5641332 | Filtraion device with variable thickness walls | Margaret K. Faber | 1997-06-24 |
| 5487863 | Extrusion die for protrusion and/or high cell density ceramic honeycomb structures | George M. Cunningham, Irwin M. Lachman | 1996-01-30 |
| 5314650 | Method for extruding honeycombs | Meryle D. W. Adler, Rodney D. Bagley, John G. Lanning, H. Gordon Shafer, Jr. | 1994-05-24 |
| 5275771 | Expansion reduction of cordierite | Edward A. Bush | 1994-01-04 |
| 5021204 | Method for selectively charging honeycomb structures | Robert J. Paisley | 1991-06-04 |
| 4979889 | Extrusion die for mini-monolith substrate | — | 1990-12-25 |
| 4902216 | Extrusion die for protrusion and/or high cell density ceramic honeycomb structures | George M. Cunningham, Irwin M. Lachman | 1990-02-20 |
| 4877766 | Mini-monolith substrate | — | 1989-10-31 |
| 4420316 | Filter apparatus and method of making it | Wayne H. Pitcher, Jr. | 1983-12-13 |
| 4419108 | Filter apparatus and method of filtering | Max R. Montierth | 1983-12-06 |
| 4415344 | Diesel particulate filters for use with smaller diesel engines | Max R. Montierth | 1983-11-15 |
| 4381815 | Thermal shock resistant honeycomb structures | Robert D. McBrayer, Vimal K. Pujari | 1983-05-03 |
| 4333518 | Method for improving thermal shock resistance of honeycombed structures formed from joined cellular segments | Robert D. McBrayer, Vimal K. Pujari | 1982-06-08 |
| 4298328 | Extrusion apparatus for preventing the distortion of peripheral cells in extruded honeycomb structures | — | 1981-11-03 |