Ralph T. Yang
34Patents
11h-index
32Co-inventors
75Inventor score
Filing activity: Feb 2, 1976 → Apr 20, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD415479S | PC card | General | 31 | Expired |
| US4696680A | Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4191115A | Carbonaceous fuel combustion with improved desulfurization | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6215037A | Method for selective adsorption of dienes | Chemistry; Metallurgy | 23 | Expired |
| US4197285A | Regeneration of lime from sulfates for fluidized-bed combustion | Chemistry; Metallurgy | 17 | Expired |
| US4134737A | Process for producing high-purity coal | Chemistry; Metallurgy | 16 | Expired |
| US7094333B2 | Selective sorbents for purification of hydrocarbons | Chemistry; Metallurgy | 16 | Expired |
| US6780806B1 | Lithium-based zeolites containing silver and copper and use thereof for selective absorption | Performing Operations; Transporting | 14 | Expired |
| US6033461A | Selective nitrogen oxides adsorption from hot gas mixtures and thermal release by adsorbent | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6423881B1 | Selective adsorption of alkenes using supported metal compounds | Chemistry; Metallurgy | 12 | Expired |
| US7148389B2 | Selective sorbents for purification of hydrocartons | Chemistry; Metallurgy | 12 | Expired |
| US6511527B2 | Method of treating exhaust gas | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5456892A | Nitrogen oxide decomposition | Performing Operations; Transporting | 10 | Expired |
| US4314980A | Preparation of reactive beta-dicalcium silicate | Chemistry; Metallurgy | 10 | Expired |
| US4250015A | Mechanochemical hydrogenation of coal | Chemistry; Metallurgy | 9 | Expired |
| US6521559B1 | Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6867166B2 | Selective adsorption of alkenes using supported metal compounds | Chemistry; Metallurgy | 9 | Expired |
| US5248321A | Process of removing sulfur oxides from gaseous mixtures | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5415850A | Pillared interlayered clay catalysts for the selective reduction of nitrogen oxides with ammonia | Performing Operations; Transporting | 7 | Expired |
| US5523068A | Nitrogen oxide decomposition | Performing Operations; Transporting | 7 | Expired |
| US7951749B2 | Enhancing hydrogen spillover and storage | Emerging Cross-Sectional Technologies | 7 | Active |
| US7029574B2 | Selective sorbents for purification of hydrocarbons | Chemistry; Metallurgy | 6 | Expired |
| US6279491A | Method of treating exhaust gas | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6406521B1 | Process for purifying propylene | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7053256B2 | Selective sorbents for purification of hydrocarbons | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.