Keio University
338Patents
286Active
338Granted
57Portfolio score
Filing activity: Mar 30, 2000 → May 2, 2023 · 108 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9040062B2 | Preparation for treatment of spinal cord injury | Human Necessities | 520 | Active |
| US7289645B2 | Hand pattern switch device | Performing Operations; Transporting | 197 | Expired |
| US7002839B2 | Magnetic ring unit and magnetic memory device | Physics | 116 | Expired |
| US7431700B2 | Body movement and respiration monitor | Human Necessities | 66 | Expired |
| US7428468B2 | Monitoring apparatus | Physics | 59 | Expired |
| US8145286B2 | Noninvasive measuring device for substance in blood via nail and a nail evaporation device | Human Necessities | 55 | Active |
| US6295030A | Antenna apparatus and portable radio communication apparatus | Electricity | 52 | Expired |
| US7717904B2 | Manipulator | Human Necessities | 50 | Active |
| US7499569B2 | Hand pattern switching apparatus | Physics | 50 | Active |
| US7498031B2 | Therapeutic agents for inner ear disorders containing an IL-6 antagonist as an active ingredient | Human Necessities | 39 | Expired |
| US7965871B2 | Moving-state determining device | Physics | 39 | Active |
| US7768790B2 | Electronic circuit | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7586781B2 | Magneto-resistance effect element and magnetic memory device | Electricity | 24 | Expired |
| US8801772B2 | Stent to be used in tubular organ in vivo | Human Necessities | 21 | Active |
| US7116852B2 | Optical signal processing circuit and method of producing same | Physics | 18 | Expired |
| US9347042B2 | Method for producing corneal endothelial cell | Chemistry; Metallurgy | 15 | Active |
| US7673334B2 | Communication system and security assurance device | Electricity | 15 | Active |
| US8513379B2 | Depolymerization method for polymer containing ester bond in main chain and method for producing polymer containing ester bond in main chain from depolymerization product | Emerging Cross-Sectional Technologies | 13 | Active |
| US10054816B2 | Method for improving visibility of liquid crystal display device, and liquid crystal display device using same | Physics | 12 | Active |
| US7860358B2 | Multimode interference waveguide type optical switch | Physics | 12 | Expired |
| US8704627B2 | Inductor element, integrated circuit device, and three-dimensional circuit device | Electricity | 12 | Active |
| US10188767B2 | Scent presentation method, scent presentation apparatus, and olfaction improving apparatus | Human Necessities | 11 | Active |
| US8744349B2 | Multi-stack semiconductor integrated circuit device | Electricity | 10 | Active |
| US7630537B2 | Three-dimensional shape-measuring device | Human Necessities | 10 | Expired |
| US8185321B2 | Method for predicting interaction between protein and chemical | Physics | 9 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.