MEC COMPANY LTD.
59Patents
23Active
59Granted
43Portfolio score
Filing activity: Apr 6, 1982 → Jan 12, 2024 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5532094A | Composition for treating copper or copper alloy surfaces | Electricity | 54 | Expired |
| US5965036A | Microetching composition for copper or copper alloy | Electricity | 44 | Expired |
| US5807493A | Microetching method for copper or copper alloy | Electricity | 34 | Expired |
| US4374744A | Stripping solution for tin or tin alloys | Electricity | 30 | Expired |
| US5035749A | Process for removing tin and tin-lead alloy from copper substrates | Electricity | 27 | Expired |
| US6426020B1 | Etchant for copper or copper alloys | Electricity | 27 | Expired |
| US5700389A | Etching solution for copper or copper alloy | Electricity | 24 | Expired |
| US5496590A | Composition for treating copper and copper alloy surfaces and method for the surface treatment | Electricity | 19 | Expired |
| US5885476A | Composition for microetching copper or copper alloy | Electricity | 18 | Expired |
| US6430988B1 | Ultrasonic leakage inspection device of non-pressure type | Physics | 15 | Expired |
| US5435860A | Benzimidazole derivative and composition for treating copper and copper alloy surfaces comprising the same | Electricity | 14 | Expired |
| US6874675B2 | Method for manufacturing printed circuit board | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6746621B2 | Micro-etching composition for copper or copper alloy, micro-etching method, and method for manufacturing printed circuit board | Electricity | 13 | Expired |
| US5439783A | Composition for treating copper or copper alloys | Electricity | 12 | Expired |
| US5334261A | Soldering flux composition and solder paste composition | Performing Operations; Transporting | 12 | Expired |
| US5788830A | Electroplating process | Electricity | 12 | Expired |
| US5547558A | Process for electroplating nonconductive surface | Electricity | 11 | Expired |
| US6106899A | Method for surface treatment of copper or copper alloys | Electricity | 11 | Expired |
| US5476947A | Benzimidazole derivative and composition for treating copper and copper alloy surfaces comprising the same | Electricity | 9 | Expired |
| US5131962A | Low-residual type soldering flux | Performing Operations; Transporting | 7 | Expired |
| US7285229B2 | Etchant and replenishment solution therefor, and etching method and method for producing wiring board using the same | Electricity | 7 | Expired |
| US8317000B2 | Wheel stop made of metal pipe and capable of transmitting power to electric car while being parked | Emerging Cross-Sectional Technologies | 6 | Active |
| US8460604B2 | Nonmagnetic material for producing parts or coatings adapted for high wear and corrosion intensive applications, nonmagnetic drill string component, and method for the manufacture thereof | Performing Operations; Transporting | 4 | Active |
| US7431861B2 | Etchant, replenishment solution and method for producing copper wiring using the same | Electricity | 3 | Expired |
| US6733886B2 | Laminate and method of manufacturing the same | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.