SUMITOMO METAL MINING CO., LTD.
891Patents
607Active
891Granted
57Portfolio score
Filing activity: Aug 6, 1974 → Mar 21, 2024 · 88 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5421926A | Transparent conductive substrate and method of making the same | Emerging Cross-Sectional Technologies | 81 | Expired |
| US4470470A | Boring apparatus | Fixed Constructions | 61 | Expired |
| US4410457A | Conductive paste | Electricity | 60 | Expired |
| US4279682A | Apparatus for securing tape to leads of semiconductor lead frame | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5153560A | Apparatus for detecting presence of person inside room having door | Physics | 42 | Expired |
| US5528719A | Optical fiber guide structure and method of fabricating same | Physics | 39 | Expired |
| US5162281A | Method of preparing hydrotreating catalyst for hydrocarbon oil | Performing Operations; Transporting | 33 | Expired |
| US5095048A | Method of manufacturing a composition for use in injection molding powder metallurgy | Performing Operations; Transporting | 31 | Expired |
| US6110571A | Duplex coated steel composite products and method of manufacturing them | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5267078A | Optical isolator | Physics | 28 | Expired |
| US5411792A | Transparent conductive substrate | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5442367A | Printed antenna with strip and slot radiators | Electricity | 28 | Expired |
| US5288950A | Flexible wiring board and method of preparing the same | Electricity | 27 | Expired |
| US5468709A | Catalysts for hydrotreating hydrocarbon oils and method of preparing the same | Performing Operations; Transporting | 26 | Expired |
| US6319613A | Coating solution for forming a film for cutting off solar radiation and the film formed therefrom | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5785897A | Coating solution for forming a transparent and electrically conductive film, a transparent and electrically conductive film formed therefrom and a process for forming the same | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6911163B2 | TRANSPARENT CONDUCTIVE THIN FILM, PROCESS FOR PRODUCING THE SAME, SINTERED TARGET FOR PRODUCING THE SAME, AND TRANSPARENT, ELECTROCONDUCTIVE SUBSTRATE FOR DISPLAY PANEL, AND ORGANIC ELECTROLUMINESCENE DEVICE | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4731207A | Method for manufacture of high-frequency dielectric ceramics | Electricity | 24 | Expired |
| US6617073B1 | Active material of positive electrode for non-aqueous electrode secondary battery and method for preparing the same and non-aqueous electrode secondary battery using the same | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4992403A | Catalysts for hydrotreating hydrocarbons and methods of preparing the same | Chemistry; Metallurgy | 24 | Expired |
| US5232888A | Method of preparing catalyst for hydrogenation of hydrocarbon oil | Performing Operations; Transporting | 23 | Expired |
| US6261479A | Transparent electro-conductive structure, process for its production, transparent electro-conductive layer forming coating fluid used for its production, and process for preparing the coating fluid | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4622663A | Optical wavelength demultiplexer | Physics | 22 | Expired |
| US5200381A | Method of preparing catalyst for hydrogenation of hydrocarbon oil | Performing Operations; Transporting | 21 | Expired |
| US4640436A | Hermetic sealing cover and a method of producing the same | Emerging Cross-Sectional Technologies | 21 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.