NIKKISO CO., LTD.
356Patents
267Active
356Granted
56Portfolio score
Filing activity: Aug 21, 1975 → Dec 21, 2023 · 19 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4572813A | Process for preparing fine carbon fibers in a gaseous phase reaction | Textiles; Paper | 148 | Expired |
| US5071558A | Sodium bicarbonate dialysate | Human Necessities | 86 | Expired |
| US4876078A | Process for preparing carbon fibers in gas phase growth | Textiles; Paper | 83 | Expired |
| US6733676B2 | Dialyzing system and method of operating the same | Human Necessities | 78 | Expired |
| US5993174A | Pulsation free pump | Mechanical Engineering; Lighting; Heating | 69 | Expired |
| US7537688B2 | Blood purification device | Human Necessities | 65 | Active |
| US4731057A | Transfusion apparatus | Human Necessities | 64 | Expired |
| US4820268A | Transfusion apparatus | Human Necessities | 55 | Expired |
| US7618531B2 | Hemodialysis treatment apparatus and method for hemodialysis treatment | Human Necessities | 53 | Active |
| US6626857B1 | Extracorporeal circulation device and method for isolation temperature control method | Human Necessities | 52 | Expired |
| US6209311A | Turbofan engine including fans with reduced speed | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5147187A | Blood pump and extracorporeal blood circulating apparatus | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4652218A | Canned motor pump for use at high temperatures | Electricity | 37 | Expired |
| US7758532B2 | Blood purification device | Human Necessities | 37 | Expired |
| US7537687B2 | Hemodialysis device | Human Necessities | 33 | Active |
| US5198763A | Apparatus for monitoring the axial and radial wear on a bearing of a rotary shaft | Physics | 33 | Expired |
| US5399145A | Blood pump | Human Necessities | 32 | Expired |
| US8905962B2 | Artificial blood vessel and access port of artificial blood vessel | Human Necessities | 32 | Active |
| US7575562B2 | Blood purification device | Human Necessities | 32 | Expired |
| US5591016A | Multistage canned motor pump having a thrust balancing disk | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US5856043A | Non-aqueous electrolyte secondary battery | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6790426B1 | Carbonaceous nanotube, nanotube aggregate, method for manufacturing a carbonaceous nanotube | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6855122B1 | Bloodless treating device | Human Necessities | 30 | Expired |
| US4640445A | Portable and wearable injector of mini size | Human Necessities | 28 | Expired |
| US7170591B2 | Blood treatment device and method for blood treatment | Human Necessities | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.