Kyuhachiro Iwasaki
36Patents
19h-index
21Co-inventors
81Inventor score
Filing activity: May 26, 1976 → Jan 25, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4045802A | Ink ejection printing apparatus comprising automatically actuated ejection orifice cap | Physics | 136 | Expired |
| US4990939A | Bubble jet printer head with improved operational speed | Performing Operations; Transporting | 126 | Expired |
| US5610637A | Ink jet recording method | Performing Operations; Transporting | 92 | Expired |
| US4673955A | Ink receptacle for ink jet printer | Performing Operations; Transporting | 67 | Expired |
| US4178595A | Ink jet printing apparatus with ink replenishing | Performing Operations; Transporting | 58 | Expired |
| US5657060A | Ink jet recording head having means for controlling ink droplets | Performing Operations; Transporting | 56 | Expired |
| US4293865A | Ink-jet recording apparatus | Physics | 53 | Expired |
| US5877786A | Ink jet recording method and head | Performing Operations; Transporting | 47 | Expired |
| US6039425A | Ink jet recording method and head | Performing Operations; Transporting | 45 | Expired |
| US4228440A | Ink jet printing apparatus | Performing Operations; Transporting | 45 | Expired |
| US5729257A | Ink jet recording head with improved ink jetting | Performing Operations; Transporting | 41 | Expired |
| US4588998A | Ink jet head having curved ink | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6193348A | On demand type ink jet recording apparatus and method | Performing Operations; Transporting | 28 | Expired |
| US6227639A | Ink jet recording method and head | Performing Operations; Transporting | 24 | Expired |
| US4700203A | Ink jet head for compressing ink to eject drops of ink | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4231047A | Ink-jet printing method and device therefor | Performing Operations; Transporting | 21 | Expired |
| US6568778B1 | Liquid jet recording apparatus and method | Performing Operations; Transporting | 20 | Expired |
| US4800398A | Ink-jet printer with an encased printer head unit | Performing Operations; Transporting | 19 | Expired |
| US4364060A | Nozzle position deviation compensation arrangement for ink jet printing device | Performing Operations; Transporting | 19 | Expired |
| US4527170A | Ink jet waste and replenish ink system | Performing Operations; Transporting | 18 | Expired |
| US4045801A | Ink ejection head for printer | Performing Operations; Transporting | 13 | Expired |
| US4520367A | Ink jet head assembly | Performing Operations; Transporting | 13 | Expired |
| US4312005A | Ink jet printing apparatus | Performing Operations; Transporting | 12 | Expired |
| US4231048A | Ink jet recording apparatus | Performing Operations; Transporting | 11 | Expired |
| US4437101A | Ink jet printing apparatus | Performing Operations; Transporting | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.