TOPPAN PRINTING CO., LTD.
1,279Patents
984Active
1,279Granted
61Portfolio score
Filing activity: Dec 26, 1973 → Aug 9, 2023 · 237 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6378774B1 | IC module and smart card | Physics | 317 | Expired |
| US5861932A | Liquid crystal cell and its manufacturing method | Physics | 206 | Expired |
| US5652067A | Organic electroluminescent device | Emerging Cross-Sectional Technologies | 198 | Expired |
| US4748320A | IC card | Physics | 155 | Expired |
| US5769311A | Heat insulating cup and method of manufacturing the same | Performing Operations; Transporting | 121 | Expired |
| US5241059A | Cyclodextrin derivatives | Chemistry; Metallurgy | 114 | Expired |
| US4206844A | Package for a sterilized material | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5129091A | Integrated-circuit card with active mode and low power mode | Physics | 102 | Expired |
| US5301062A | Display having diffraction grating pattern | Physics | 100 | Expired |
| US4482585A | Container resistant to extremely low temperatures | Emerging Cross-Sectional Technologies | 94 | Expired |
| US5870224A | Lenticular sheet, rear-projection screen or TV using the same, and fabrication method for said lenticular sheet | Physics | 92 | Expired |
| US4411365A | Moisture proof container with an outer box and an inner bag opened simultaneously | Emerging Cross-Sectional Technologies | 91 | Expired |
| US5058992A | Method for producing a display with a diffraction grating pattern and a display produced by the method | Physics | 90 | Expired |
| US5667853A | Multilayered conductive film, and transparent electrode substrate and liquid crystal device using the same | Physics | 89 | Expired |
| US4384972A | Foodstuff freshness keeping agents | Human Necessities | 87 | Expired |
| US4483464A | Container with a pouring spout | Performing Operations; Transporting | 80 | Expired |
| US5700550A | Transparent hologram seal | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4808782A | Microwave irradiating sterilization process | Electricity | 77 | Expired |
| US4367110A | Decorative laminate and a manufacturing method therefor | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4047868A | Multilayer parison extrusion molding machine for blow molding | Performing Operations; Transporting | 75 | Expired |
| US4846556A | Color filter and method of manufacturing the same | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6438281B1 | Optical wiring layer, optoelectric wiring substrate, mounted substrate, and methods for manufacturing the same | Electricity | 74 | Expired |
| USD468638S1 | Box for packaging | General | 72 | Expired |
| US4717954A | Method and apparatus using a conversion table based on pre-printed color charts for determining half-tone dot percents required to reproduce the color of a color specimen | Performing Operations; Transporting | 70 | Expired |
| US4685139A | Inspecting device for print | Physics | 70 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.