HOYA CORPORATION
2,534Patents
1,708Active
2,534Granted
59Portfolio score
Filing activity: Dec 8, 1976 → Jun 26, 2024 · 869 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9332890B2 | Processor for electronic endoscope and electronic endoscope apparatus | Electricity | 1,086 | Active |
| US8469946B2 | Operation unit and treatment tool for endoscope provided with the same | Human Necessities | 983 | Active |
| US6214429A | Disc substrates for information recording discs and magnetic discs | Emerging Cross-Sectional Technologies | 169 | Expired |
| US8070760B2 | Clipping instrument for an endoscopic surgical device | Human Necessities | 154 | Active |
| US8062310B2 | Clipping instrument for an endoscopic surgical device | Human Necessities | 135 | Active |
| US6818576B2 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied | Physics | 131 | Expired |
| US7402162B2 | High frequency treatment instrument for endoscope | Performing Operations; Transporting | 125 | Expired |
| US8570668B2 | Imaging optical system and imaging apparatus | Physics | 118 | Active |
| US5654057A | Sheet glass flattening method, method of manufacturing glass substrate for an information recording disk using flattened glass, method of manufacturing a magnetic recording disk using glass substrate, and magnetic recording medium | Emerging Cross-Sectional Technologies | 115 | Expired |
| US4944837A | Method of processing an article in a supercritical atmosphere | Physics | 110 | Expired |
| US8718458B2 | Imaging unit | Physics | 108 | Active |
| US5695493A | Laser surgical unit | Human Necessities | 104 | Expired |
| US7749156B2 | Retractable treatment instrument for endoscope | Human Necessities | 99 | Active |
| USD925567S1 | Display screen with transitional graphical user interface | General | 90 | Active |
| US5348552A | Laser surgical unit | Human Necessities | 85 | Expired |
| US6339197B1 | Multilayer printed circuit board and the manufacturing method | Emerging Cross-Sectional Technologies | 85 | Expired |
| US7828725B2 | Bent state holding mechanism of an endoscope | Human Necessities | 83 | Active |
| US5374266A | Medical laser treatment device | Physics | 81 | Expired |
| US6759138B2 | Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer | Emerging Cross-Sectional Technologies | 80 | Expired |
| US5485399A | Spectacle lens supply method | Physics | 78 | Expired |
| US6287429A | Magnetic recording medium having an improved magnetic characteristic | Chemistry; Metallurgy | 77 | Expired |
| US7252897B2 | Magnetic recording disk and process for manufacture thereof | Physics | 76 | Expired |
| US4521524A | Contrast enhancement filter for color CRT display devices | Electricity | 76 | Expired |
| US6670055B2 | Magnetic recording medium and manufacturing method therefor | Emerging Cross-Sectional Technologies | 76 | Expired |
| US7383698B2 | Method of manufacturing glass melt and method of manufacturing molded glass material | Physics | 75 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.