Inventor · Daejeon, KR

Won Choon Choi

35Patents
5h-index
57Co-inventors
72Inventor score

Filing activity: Dec 29, 1993 → Dec 4, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US5371306A Modified magnesium oxide catalyst Chemistry; Metallurgy 77 Expired
US7771687B2 Method for preparing granular polycrystalline silicon using fluidized bed reactor Chemistry; Metallurgy 15 Active
US7972562B2 High-pressure fluidized bed reactor for preparing granular polycrystalline silicon Performing Operations; Transporting 10 Active
US8017024B2 Method for continual preparation of polycrystalline silicon using a fluidized bed reactor Performing Operations; Transporting 7 Active
US8821827B2 Method and apparatus for preparation of granular polysilicon Chemistry; Metallurgy 6 Active
US8114352B2 High-pressure fluidized bed reactor for preparing granular polycrystalline silicon Performing Operations; Transporting 4 Active
US8894753B2 Carbon dioxide capture systems Emerging Cross-Sectional Technologies 4 Active
US7718840B2 Process for production of light olefins from hydrocarbon feedstock Chemistry; Metallurgy 3 Active
US9321039B2 Catalyst for decomposition of perfluorinated compound containing halogen acid gas, and preparation method thereof Emerging Cross-Sectional Technologies 3 Active
US7488700B2 Hydrothermally stable microporous molecular sieve catalyst and preparation method thereof Emerging Cross-Sectional Technologies 3 Active
US7601663B2 Solid acid catalyst for producing light olefins and process using the same Emerging Cross-Sectional Technologies 3 Active
US8431032B2 Method for continual preparation of polycrystalline silicon using a fluidized bed reactor Performing Operations; Transporting 3 Active
US7663013B2 Solid acid catalyst for producing light olefins and process using the same Emerging Cross-Sectional Technologies 2 Active
US7923358B2 Methods for preparation of high-purity polysilicon rods using a metallic core means Emerging Cross-Sectional Technologies 2 Active
US8216643B2 Methods for preparation of high-purity polysilicon rods using a metallic core means Emerging Cross-Sectional Technologies 2 Active
US9056308B2 Catalyst for catalytic cracking of hydrocarbon, which is used in production of light olefin and production method thereof Emerging Cross-Sectional Technologies 2 Active
US9694312B2 Carbon dioxide capture apparatus Emerging Cross-Sectional Technologies 2 Active
US11148123B2 Catalyst for producing olefin, and continuous reaction-regeneration olefin producing method using the catalyst Emerging Cross-Sectional Technologies 1 Active
US8747757B2 Method and apparatus for preparation of granular polysilicon Chemistry; Metallurgy 1 Active
US11141712B2 Catalyst for producing olefin having enhanced stability, conversion rate and selectivity, and preparation method thereof Performing Operations; Transporting 1 Active
US8840864B2 Method of preparing ZSM-5 zeolite using nanocrystalline ZSM-5 seeds Performing Operations; Transporting 1 Active
US8430959B2 Apparatus and methods for preparation of high-purity silicon rods using mixed core means Emerging Cross-Sectional Technologies 1 Active
US8673802B2 Catalyst for catalytic cracking of hydrocarbon, which is used in production of light olefin and production method thereof Emerging Cross-Sectional Technologies 0 Active
US11865514B2 Catalyst for producing olefin, including oxygen carrier material and dehydrogenation catalyst Emerging Cross-Sectional Technologies 0 Active
US10226757B2 Method for surface-modifying metal silicide, and method and apparatus for preparing trichlorosilane using surface-modified metal silicide Performing Operations; Transporting 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.