NIPPON CHEMICAL INDUSTRIAL CO., LTD.
170Patents
92Active
170Granted
51Portfolio score
Filing activity: Mar 31, 1975 → Feb 24, 2023 · 41 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5346876A | Air purifying agent and a process for producing same | Performing Operations; Transporting | 58 | Expired |
| US5435846A | Cement-additive for inhibiting concrete-deterioration | Chemistry; Metallurgy | 47 | Expired |
| US4049556A | Foam fire extinguishing agent | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4375373A | Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica | Chemistry; Metallurgy | 43 | Expired |
| US6770369B1 | Conductive electrolessly plated powder, its producing method, and conductive material containing the plated powder | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5520910A | Antimicrobial polymer, contact lens and contact lens-care articles | Physics | 27 | Expired |
| US6613298B2 | Trivalent and tetravalent mixed vanadium compound producing method and vanadium electrolyte producing method | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6872376B2 | Modified vanadium compound, producing method thereof, redox flow battery electrolyte composite and redox flow battery electrolyte producing method | Emerging Cross-Sectional Technologies | 25 | Expired |
| US8003256B2 | Positive electrode active material having magnesium atoms and sulfate groups, method for manufacturing the same, and lithium secondary battery having the same | Emerging Cross-Sectional Technologies | 23 | Active |
| US4371656A | Metal substituted zeolites as stabilizers for halogen-containing resins | Chemistry; Metallurgy | 22 | Expired |
| US9227850B2 | Positive electrode active material for lithium secondary battery, method for producing the same, and lithium secondary battery | Emerging Cross-Sectional Technologies | 22 | Active |
| US6139616A | Rust-preventive pigment composition and rust-preventive paints containing the same | Chemistry; Metallurgy | 22 | Expired |
| US5695528A | Treating agent for cellulosic textile material and process for treating cellulosic textile material | Textiles; Paper | 19 | Expired |
| US6475679B1 | Non-aqueous electrolyte secondary battery | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4334933A | Process for preparing stable inorganic pigment | Chemistry; Metallurgy | 17 | Expired |
| US4741779A | Additives for resins and their composition | Chemistry; Metallurgy | 16 | Expired |
| US4340426A | Additives for continuous casting of steel | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7547492B2 | Lithium cobalt oxide, method for manufacturing the same, and nonaqueous electrolyte secondary battery | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5830414A | Air cleaning filter | Performing Operations; Transporting | 12 | Expired |
| US8137844B2 | Cathode active material for lithium rechargeable battery, manufacturing method thereof and lithium rechargeable battery | Emerging Cross-Sectional Technologies | 11 | Active |
| US6159437A | Method for manufacturing an aptatite slurry | Chemistry; Metallurgy | 10 | Expired |
| US4374897A | Chromium oxide-based sintered bodies and process for production thereof | Chemistry; Metallurgy | 10 | Expired |
| US5885544A | Lithium cobaltate based positive electrode-active material for lithium secondary cell and method of manufacturing same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5891416A | Lithium cobaltate based positive electrode-active material for lithium secondary cell and method of manufacturing same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6395807B1 | Fine spherical silica and liquid sealing resin composition containing same | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.