Ji-Yong Ryu
23Patents
7h-index
8Co-inventors
62Inventor score
Filing activity: Dec 29, 1975 → Feb 3, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6942784B2 | Structurally enhanced cracking catalysts | Performing Operations; Transporting | 13 | Expired |
| US4275052A | Process for preparing high surface area aluminas | Chemistry; Metallurgy | 13 | Expired |
| US4061689A | Process for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5177290A | Isoprene process | Chemistry; Metallurgy | 10 | Expired |
| US4048109A | Oligomerization process and catalysts therefor | Chemistry; Metallurgy | 10 | Expired |
| US4560790A | Process for synthesizing .alpha.,.beta.-ethylenically unsaturated products using a multicomponent acidic catalyst composition | Chemistry; Metallurgy | 9 | Expired |
| US4430252A | Process for synthesizing a multicomponent acidic catalyst composition by an organic solution method | Chemistry; Metallurgy | 7 | Expired |
| US4444904A | Process for synthesizing a multicomponent acidic catalyst composition containing zirconium by an organic solution method | Chemistry; Metallurgy | 7 | Expired |
| US4048248A | Process and catalyst for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4108920A | Oligomerization of olefins | Chemistry; Metallurgy | 6 | Expired |
| US4110410A | Oligomerization of olefins | Chemistry; Metallurgy | 5 | Expired |
| US4048247A | Process for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4321402A | Carbamate process | Chemistry; Metallurgy | 3 | Expired |
| US4048108A | Oligomerization process and catalyst therefor | Chemistry; Metallurgy | 3 | Expired |
| US4739111A | Alpha, beta-ethylenically unsaturated acids and derivatives thereof using a multicomponent acidic catalyst composition containing zirconium | Chemistry; Metallurgy | 3 | Expired |
| US4415745A | Process for the preparation of aromatic carbamates and isocyanates | Chemistry; Metallurgy | 2 | Expired |
| US4313021A | Process for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4243827A | Process for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4119675A | Process for transalkylation of alkylaromatic hydrocarbons using a catalyst comprising TiF.sub.4 and a metal oxide | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4119676A | Process for isomerization of alkylaromatic hydrocarbon | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4312785A | Process for the conversion of aromatic hydrocarbons | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4123468A | Titanium tetrachloride as heterogeneous catalyst for isomerization of alkylaromatic hydrocarbon | Emerging Cross-Sectional Technologies | 0 | Expired |
| US4119677A | Titanium tetrachloride as heterogeneous catalyst for transalkylation of alkylaromatic hydrocarbons | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.