DAI-ICHI SEIKO CO., LTD.
332Patents
299Active
332Granted
59Portfolio score
Filing activity: Mar 7, 1977 → Dec 27, 2022 · 66 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4823234A | Semiconductor device and its manufacture | Emerging Cross-Sectional Technologies | 170 | Expired |
| USD748588S1 | Housing for an electric connector | General | 49 | Active |
| USD748580S1 | Electric connector | General | 38 | Active |
| US5750423A | Method for encapsulation of semiconductor devices with resin and leadframe therefor | Electricity | 35 | Expired |
| US4599062A | Encapsulation molding apparatus | Performing Operations; Transporting | 32 | Expired |
| US4691975A | Integrated circuit tester socket | Electricity | 29 | Expired |
| USD742321S1 | Electric connector | General | 29 | Active |
| USD748589S1 | Electric connector | General | 28 | Active |
| USD719098S1 | Electric connector housing | General | 28 | Active |
| USD742322S1 | Electric connector | General | 27 | Active |
| USD773998S1 | Electric connector | General | 26 | Active |
| USD852753S1 | Electrical connector housing | General | 23 | Active |
| USD729173S1 | Electrical connector | General | 23 | Active |
| USD760659S1 | Electrical connector | General | 23 | Active |
| USD826166S1 | Electrical connector | General | 22 | Active |
| US4289282A | Tape reel | Performing Operations; Transporting | 22 | Expired |
| US4473194A | Tape reel | Physics | 20 | Expired |
| US5204122A | Mold for use in resin encapsulation molding | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4701024A | Liquid crystal material including magnetic particles and method of producing the same | Physics | 19 | Expired |
| US8337230B1 | Electrical connector | Electricity | 19 | Active |
| USD748586S1 | Electric connector | General | 19 | Active |
| US8678844B2 | Electrical connector with one action automatic mechanism | Electricity | 18 | Active |
| USD742323S1 | Housing for an electric connector | General | 18 | Active |
| US5186537A | Illumination device | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4226381A | Tape reel | Performing Operations; Transporting | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.