Douglas Munroe Beall
81Patents
17h-index
63Co-inventors
87Inventor score
Filing activity: Feb 13, 1991 → Jul 6, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6506336B1 | Fabrication of ultra-thinwall cordierite structures | Chemistry; Metallurgy | 76 | Expired |
| US6541407B2 | Cordierite body | Emerging Cross-Sectional Technologies | 65 | Expired |
| US6696132B2 | Honeycomb with varying channel size and die for manufacturing | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6843822B2 | Filter with varying cell channels | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6319870A | Fabrication of low thermal expansion, high strength cordierite structures | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6432856B1 | Low expansion, high porosity, high strength cordierite body and method | Emerging Cross-Sectional Technologies | 33 | Expired |
| USRE38888E1 | Cordierite body | General | 32 | Expired |
| US7141089B2 | Magnesium aluminum silicate structures for DPF applications | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5114644A | Fabrication of cordierite bodies | Performing Operations; Transporting | 28 | Expired |
| US6566290B2 | Lithium aluminosilicate ceramic | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7601194B2 | Asymmetric honeycomb wall-flow filter having improved structural strength | Emerging Cross-Sectional Technologies | 22 | Active |
| US5114643A | Fabrication of cordierite bodies | Performing Operations; Transporting | 21 | Expired |
| US6773657B2 | Method for making cordierite honeycomb | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6368992B1 | Binder system for honeycomb ceramic bodies and a method for producing honeycomb bodies | Chemistry; Metallurgy | 20 | Expired |
| US7485170B2 | Narrow pore size distribution cordierite ceramic honeycomb articles and methods for manufacturing same | Emerging Cross-Sectional Technologies | 19 | Active |
| US7520911B2 | Porous cordierite ceramic honeycomb article with improved strength and method of manufacturing same | Emerging Cross-Sectional Technologies | 18 | Active |
| US7618699B2 | Low-microcracked, porous ceramic honeycombs and methods of manufacturing same | Emerging Cross-Sectional Technologies | 17 | Active |
| US7575793B2 | Radial cell ceramic honeycomb structure | Emerging Cross-Sectional Technologies | 17 | Active |
| US6214471A | Glasses compatible with aluminum | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6214437A | Low-expansion cordierite honeycomb bodies and method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7927682B2 | Low-microcracked, porous ceramic honeycombs and methods of manufacturing same | Emerging Cross-Sectional Technologies | 15 | Active |
| US6207101A | Method of making fired bodies | Chemistry; Metallurgy | 15 | Expired |
| US6300266A | Cordierite structures | Chemistry; Metallurgy | 14 | Expired |
| US8444752B2 | Particulate filters and methods of filtering particulate matter | Performing Operations; Transporting | 14 | Active |
| US6284693A | Fabrication of ultra low thermal expansion cordierite structures | Emerging Cross-Sectional Technologies | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.