MITSUI MINING & SMELTING CO., LTD.
818Patents
383Active
818Granted
53Portfolio score
Filing activity: Sep 6, 1972 → Apr 4, 2023 · 124 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5011510A | Composite abrasive-articles and manufacturing method therefor | Chemistry; Metallurgy | 119 | Expired |
| US5019944A | Mounting substrate and its production method, and printed wiring board having connector function and its connection method | Electricity | 94 | Expired |
| US7255919B2 | Mold release layer transferring film and laminate film | Emerging Cross-Sectional Technologies | 87 | Expired |
| US7173322B2 | COF flexible printed wiring board and method of producing the wiring board | Electricity | 84 | Expired |
| US6149588A | Blood sugar value measuring method and apparatus | Human Necessities | 69 | Expired |
| US7513520B2 | Powered step device of motor vehicle | Performing Operations; Transporting | 63 | Active |
| US6681624B2 | Thermal flowmeter with fluid descriminant function | Physics | 50 | Expired |
| US5298963A | Apparatus for inspecting the surface of materials | Physics | 49 | Expired |
| US6240636A | Method for producing vias in the manufacture of printed circuit boards | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4551254A | Macroporous manganese dioxide water purifier | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4581219A | Method of making macroporous manganese dioxide | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5118386A | Printed circuit board having bumps and method of forming bumps | Electricity | 41 | Expired |
| US5500871A | Spread spectrum communication transmitter an LSI therefor | Electricity | 40 | Expired |
| US5938837A | Cerium oxide ultrafine particles and method for preparing the same | Chemistry; Metallurgy | 35 | Expired |
| US5492878A | Catalyst for cleaning exhaust gas with alumina, ceria, zirconia, nickel oxide, alkaline earth oxide, and noble metal catalyst, and method for preparing | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5424536A | Substrate internal defect and external particle detecting apparatus using s-polarized and p-polarized light | Physics | 33 | Expired |
| US6120576A | Method for preparing nickel fine powder | Performing Operations; Transporting | 30 | Expired |
| US6475638B1 | Electrodeposited copper foil with its surface prepared, process for producing the same and use thereof | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6270889A | Making and using an ultra-thin copper foil | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4735876A | Zinc-alkaline battery | Emerging Cross-Sectional Technologies | 28 | Expired |
| US7780207B2 | Automotive door latch system | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5471298A | Method and apparatus for measuring size of particle or defect | Physics | 27 | Expired |
| US4119533A | Method for separating mixed plastics | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5173369A | Tape carrier having connection function | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4861688A | Zinc-alkaline battery | Emerging Cross-Sectional Technologies | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.