John Y. Lee
40Patents
7h-index
26Co-inventors
69Inventor score
Filing activity: Aug 6, 1982 → May 19, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4745189A | Method of preparing N-halogenated organic heterocyclic compounds | Chemistry; Metallurgy | 29 | Expired |
| US4892700A | Process for making multilayered, formable laminates | Performing Operations; Transporting | 26 | Expired |
| US4612398A | Alkyl mercaptan process | Chemistry; Metallurgy | 9 | Expired |
| US5569746A | Process for preparing alkylsubstituted cyclopentadienyl metallocene compounds | Chemistry; Metallurgy | 9 | Expired |
| US5200537A | Process for preparing metallocenes | Chemistry; Metallurgy | 8 | Expired |
| US5145943A | Production of particulate amide/imide prepolymers | Chemistry; Metallurgy | 8 | Expired |
| US7288677B2 | Diimines and secondary diamines | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6162950A | Preparation of alkali metal tetrakis(.sup.F aryl)borates | Chemistry; Metallurgy | 7 | Expired |
| US6169208A | Process for producing a magnesium di[tetrakis(Faryl)borate] and products therefrom | Chemistry; Metallurgy | 7 | Expired |
| US9067306B1 | Cam activated clamp | Performing Operations; Transporting | 6 | Active |
| US7767858B2 | Diimines and secondary diamines | Emerging Cross-Sectional Technologies | 5 | Active |
| US6129863A | Clean generation of a perfluoroaryl grignard reagent | Chemistry; Metallurgy | 5 | Expired |
| US4507503A | Process for preparing tertiary phosphines | Chemistry; Metallurgy | 4 | Expired |
| US6248265A | Clean generation of a fluoroaryl grignard reagent | Chemistry; Metallurgy | 4 | Expired |
| US5959151A | Process for the purification of pentafluorophenyl boron compounds | Chemistry; Metallurgy | 4 | Expired |
| US4507504A | Process for preparing tertiary phosphines | Chemistry; Metallurgy | 4 | Expired |
| US6388138B1 | Process for producing a magnesium di[tetrakis(Faryl)borate] and products therefrom | Chemistry; Metallurgy | 3 | Expired |
| US5856255A | Preparation of supported auxiliary catalysts at elevated temperature and pressure in a closed vessel | Chemistry; Metallurgy | 3 | Expired |
| US4514575A | Process for preparing tertiary phosphines | Chemistry; Metallurgy | 3 | Expired |
| US5648308A | Process for upgrading metallocene catalysts | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7087780B2 | Process for producing tetrakis(Faryl)borate salts | Chemistry; Metallurgy | 2 | Expired |
| US7964695B2 | Chain extenders | Chemistry; Metallurgy | 2 | Active |
| US5276199A | Process for preparing cyclopentenones | Chemistry; Metallurgy | 2 | Expired |
| US5434324A | Preparation of alkylcyclopentadienes | Chemistry; Metallurgy | 2 | Expired |
| US4492798A | Process for preparing arylalkylpyruvic acids | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.