Enplas Corporation
776Patents
500Active
776Granted
56Portfolio score
Filing activity: Oct 3, 1990 → Aug 28, 2024 · 111 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5134549A | Surface light source device | Physics | 228 | Expired |
| US5584556A | Surface light source device | Emerging Cross-Sectional Technologies | 189 | Expired |
| US6222689A | Surface light source device and asymmetrical prism sheet | Physics | 162 | Expired |
| US5971559A | Surface light source device | Physics | 145 | Expired |
| US5518410A | Contact pin device for IC sockets | Electricity | 140 | Expired |
| US7348723B2 | Emission device, surface light source device, display and light flux control member | Electricity | 119 | Expired |
| US5600455A | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface | Physics | 116 | Expired |
| US5982540A | Surface light source device with polarization function | Emerging Cross-Sectional Technologies | 110 | Expired |
| US5997148A | Surface light source device of side light type | Emerging Cross-Sectional Technologies | 107 | Expired |
| US5659410A | Surface light source device and liquid crystal display | Physics | 106 | Expired |
| US6805563B2 | Socket for electrical parts | Electricity | 96 | Expired |
| US5779338A | Surface light source device | Physics | 93 | Expired |
| US5575549A | Surface light source device | Physics | 91 | Expired |
| US5718497A | Surface light source device | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6663254B2 | Light guide plate, surface light source device and display | Emerging Cross-Sectional Technologies | 84 | Expired |
| US6070484A | Mold type plastic gear | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5899552A | Surface light source device | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6280043A | Surface light source device of side light type | Physics | 64 | Expired |
| US7626655B2 | Surface light source device of side light type, liquid crystal display and guide plate | Physics | 62 | Expired |
| US5967637A | Tapered light guide plate for surface light source device and method of making by injection molding via supplementary cavity | Emerging Cross-Sectional Technologies | 61 | Expired |
| US6485157B2 | Light guide plate, surface light source device and liquid crystal display | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5599194A | IC socket and its contact pin | Electricity | 56 | Expired |
| US6172809A | Surface light source device with polarization function | Emerging Cross-Sectional Technologies | 56 | Expired |
| US6883397B2 | Gear made of resin, and mold structure | Emerging Cross-Sectional Technologies | 54 | Expired |
| US5572411A | Surface light source device | Physics | 53 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.