SK Chemicals CO., Ltd.
202Patents
175Active
202Granted
57Portfolio score
Filing activity: Jun 16, 1998 → Jul 16, 2024 · 46 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6559272B1 | Method for preparing copolyester resins using titanium dioxide/silicon dioxide coprecipitate catalyst in the form of suspension in glycol | Chemistry; Metallurgy | 65 | Expired |
| US8697127B2 | Method for preparing microspheres and microspheres produced thereby | Human Necessities | 62 | Active |
| US7951967B2 | Method and apparatus for preparing fatty acid alkyl ester using fatty acid | Emerging Cross-Sectional Technologies | 17 | Active |
| US9622986B2 | Percutaneous absorption preparation containing donepezil, and method for preparing same | Human Necessities | 14 | Active |
| US7772400B2 | Optical resolution method of amlodipine | Chemistry; Metallurgy | 13 | Active |
| US10034949B2 | Polyvalent pneumococcal polysaccharide-protein conjugate composition | Human Necessities | 12 | Active |
| US10058607B2 | Polyvalent pneumococcal polysaccharide-protein conjugate composition | Human Necessities | 12 | Active |
| US7495022B2 | α,β-unsaturated hydroxamic acid derivatives and their use as histone deacetylase inhibitors | Chemistry; Metallurgy | 9 | Expired |
| US9074048B2 | Polyarylene sulfide and preparation method thereof | Emerging Cross-Sectional Technologies | 9 | Active |
| US7314644B2 | Extraction and purification method of active constituents from stem of Lonicera japonica thunb., its usage for anti-inflammatory and analgesic drug | Human Necessities | 8 | Expired |
| US6924349B2 | Copolyester resin and articles using the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8242233B2 | Manufacturing process for poly (arylene sulphide) | Chemistry; Metallurgy | 7 | Active |
| US7734501B2 | Method of selling commodities and sharing sales profits using internet | Physics | 7 | Active |
| US8492502B2 | Method for production of polyarylene sulfide resin with excellent luminosity and the polyarylene sulfide resin | Chemistry; Metallurgy | 7 | Active |
| US9981029B2 | Multivalent pneumococcal polysaccharide-protein conjugate composition | Human Necessities | 7 | Active |
| US9028635B2 | Fiber reinforced plastic bolt and method for producing the same | Performing Operations; Transporting | 6 | Active |
| US10100193B2 | Polymer resin composition and molded article thereof | Chemistry; Metallurgy | 5 | Active |
| US11396579B2 | Polyester film and manufacturing method thereof | Chemistry; Metallurgy | 5 | Active |
| US7407958B2 | 2-pyridyl substituted imidazoles as ALK5 and/or ALK4 inhibitors | Chemistry; Metallurgy | 5 | Expired |
| US8759478B2 | Method for preparing polyarylene sulfide having reduced iodine content | Chemistry; Metallurgy | 5 | Active |
| US7078476B2 | Copolyester resin for solventborne coating and coating composition comprising the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9441030B2 | Process for producing and purifying factor VIII and its derivatives | Chemistry; Metallurgy | 5 | Active |
| US8957182B2 | Polyarylene sulfide resin with excellent luminosity and preparation method thereof | Chemistry; Metallurgy | 5 | Active |
| US9636392B2 | Production method for capsular polysaccharide having pneumococcal serotype | Chemistry; Metallurgy | 5 | Active |
| US9650515B2 | Polyarylene sulfide resin composition and a preparation method thereof | Chemistry; Metallurgy | 4 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.