Masaaki Kasai
28Patents
14h-index
33Co-inventors
81Inventor score
Filing activity: Jul 27, 1982 → Feb 28, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5033476A | Blood collecting tube | Human Necessities | 83 | Expired |
| US4444330A | Medical container stopper | Chemistry; Metallurgy | 78 | Expired |
| US4682703A | Stopper for medical container | Human Necessities | 76 | Expired |
| US4664275A | Medical container stopper | Chemistry; Metallurgy | 69 | Expired |
| US4991601A | Holder for blood sample tube | Human Necessities | 38 | Expired |
| US5213765A | Blood collection tube | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5637399A | Synthetic resin needle | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4776959A | Hydrophilic porous membrane and method for manufacturing thereof | Performing Operations; Transporting | 28 | Expired |
| USD323710S | Blood collecting tube holder | General | 28 | Expired |
| US4936314A | Method of evacuating and preserving a blood collecting device | Human Necessities | 22 | Expired |
| US8016791B2 | Valve body and medical tool | Human Necessities | 21 | Active |
| US5201794A | Method for sampling blood specimen | Physics | 16 | Expired |
| USD311249S | Blood collecting tube | General | 16 | Expired |
| US5020220A | Device for opening film-like closure | Performing Operations; Transporting | 14 | Expired |
| US4985026A | Blood collecting tube | Performing Operations; Transporting | 14 | Expired |
| US7081107B2 | Syringe and prefilled syringe | Human Necessities | 14 | Expired |
| US4507415A | Medical articles | Chemistry; Metallurgy | 13 | Expired |
| US8096976B2 | Valve body and medical tool | Human Necessities | 11 | Active |
| US11363961B2 | Biological information analysis device, system, and program | Human Necessities | 1 | Active |
| US11324454B2 | Blood pressure measurement apparatus, method of controlling blood pressure measurement apparatus, and program | Human Necessities | 0 | Active |
| US11129944B2 | Method for producing needle-equipped outer tube and needle-equipped outer tube | Human Necessities | 0 | Active |
| US11246501B2 | Biological information analysis device, system, and program | Human Necessities | 0 | Active |
| US9167352B2 | Microphone | Electricity | 0 | Active |
| US11219722B2 | Needle-equipped outer tube | Performing Operations; Transporting | 0 | Active |
| US10258747B2 | Method for manufacturing needle-equipped outer tube, and needle-equipped outer tube | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.