SUMITOMO CHEMICAL COMPANY, LIMITED
6,972Patents
2,673Active
6,972Granted
53Portfolio score
Filing activity: Aug 2, 1966 → Mar 28, 2024 · 867 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7161036B2 | Process for producing oxime | Chemistry; Metallurgy | 1,441 | Expired |
| US4247642A | Enzyme immobilization with pullulan gel | Chemistry; Metallurgy | 247 | Expired |
| US4818559A | Method for producing endosseous implants | Emerging Cross-Sectional Technologies | 188 | Expired |
| US5317169A | Organic electroluminescence device | Electricity | 187 | Expired |
| US4315086A | Resin compositions | Emerging Cross-Sectional Technologies | 176 | Expired |
| US5070134A | Vinyl acetate-ethylene copolymer emulsion and process for producing the same | Chemistry; Metallurgy | 169 | Expired |
| US5110856A | Vinyl acetate-ethylene copolymer emulsion and process for producing the same | Chemistry; Metallurgy | 167 | Expired |
| US5767935A | Light control sheet and liquid crystal display device comprising the same | Physics | 150 | Expired |
| US4317918A | Process for preparing alcohols | Chemistry; Metallurgy | 150 | Expired |
| US6376939B1 | Sensor apparatus and safety apparatus for protecting approach to machines | Electricity | 145 | Expired |
| US4438238A | Low density copolymer composition of two ethylene-.alpha.-olefin copolymers | Emerging Cross-Sectional Technologies | 142 | Expired |
| US4145764A | Endosseous implants | Human Necessities | 137 | Expired |
| US5699071A | Glass antenna system for automobile | Electricity | 111 | Expired |
| US6447958B1 | Non-aqueous electrolyte battery separator | Emerging Cross-Sectional Technologies | 99 | Expired |
| US7935984B2 | Compound semiconductor epitaxial substrate and method for producing the same | Electricity | 95 | Active |
| US5672554A | Alumina composition, alumina molded article, alumina ceramics, and process for producing ceramics | Chemistry; Metallurgy | 95 | Expired |
| US5218048A | Polyolefin resin composition | Chemistry; Metallurgy | 93 | Expired |
| US5224970A | Abrasive material | Chemistry; Metallurgy | 92 | Expired |
| US4146936A | Implants for bones, joints and tooth roots | Human Necessities | 92 | Expired |
| US5523074A | Process for preparaing polyhedral .alpha.-alumina particles | Chemistry; Metallurgy | 90 | Expired |
| US4435203A | Optical isomer of triazolylpentenols, and their production and use as fungicide, herbicide and/or plant growth regulant | Chemistry; Metallurgy | 85 | Expired |
| US5587014A | Method for manufacturing group III-V compound semiconductor crystals | Chemistry; Metallurgy | 84 | Expired |
| US6736941B2 | Process for purifying propylene oxide | Chemistry; Metallurgy | 83 | Expired |
| US6503610B2 | Group III-V compound semiconductor and method of producing the same | Emerging Cross-Sectional Technologies | 82 | Expired |
| US4367323A | Production of hydrogels | Chemistry; Metallurgy | 82 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.