HITACHI CHEMICAL COMPANY, LTD.
1,665Patents
789Active
1,665Granted
56Portfolio score
Filing activity: Jan 6, 1971 → Nov 8, 2018 · 369 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9171244B2 | RFID tag | Electricity | 619 | Active |
| US5976912A | Fabrication process of semiconductor package and semiconductor package | Electricity | 389 | Expired |
| US5449480A | Method of producing boards for printed wiring | Electricity | 160 | Expired |
| US7258976B2 | Method of preparing cell lysate | Chemistry; Metallurgy | 145 | Expired |
| US6281450A | Substrate for mounting semiconductor chips | Electricity | 143 | Expired |
| US4983488A | Process for producing toner for electrophotography | Physics | 140 | Expired |
| US5001542A | Composition for circuit connection, method for connection using the same, and connected structure of semiconductor chips | Electricity | 136 | Expired |
| US4740657A | Anisotropic-electroconductive adhesive composition, method for connecting circuits using the same, and connected circuit structure thus obtained | Emerging Cross-Sectional Technologies | 131 | Expired |
| US5120665A | Method of using an anisotropically electroconductive adhesive having pressure-deformable electroconductive particles to electrically connect circuits | Electricity | 119 | Expired |
| US6121553A | Circuit boards using heat resistant resin for adhesive layers | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6223429A | Method of production of semiconductor device | Emerging Cross-Sectional Technologies | 82 | Expired |
| US4731282A | Anisotropic-electroconductive adhesive film | Emerging Cross-Sectional Technologies | 79 | Expired |
| US5997829A | Environment purifying material | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5804882A | Semiconductor device having a semiconductor chip electrically connected to a wiring substrate | Electricity | 78 | Expired |
| US5003457A | Simultaneous data and electric power transmitting/receiving system | Emerging Cross-Sectional Technologies | 75 | Expired |
| US4902551A | Process for treating copper surface | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6001277A | Liquid-crystal alignment film | Chemistry; Metallurgy | 71 | Expired |
| US5915757A | Electrostatic protective device and method for fabricating same | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5843251A | Process for connecting circuits and adhesive film used therefor | Emerging Cross-Sectional Technologies | 66 | Expired |
| US5153987A | Process for producing printed wiring boards | Emerging Cross-Sectional Technologies | 62 | Expired |
| US6221118A | Cerium oxide abrasive and method of polishing substrates | Chemistry; Metallurgy | 62 | Expired |
| US4758875A | Resin encapsulated semiconductor device | Electricity | 60 | Expired |
| US4698291A | Photosensitive composition with 4-azido-2'-methoxychalcone | Physics | 59 | Expired |
| USD692578S1 | Component for a cell-collecting cartridge | General | 58 | Active |
| US3989610A | Photosensitive epoxy-acrylate resin compositions | Physics | 57 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.