Inventor
Takuro Isayama
Inventor
Tokyo, JP
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters55%
G01DMeasuring not specially adapted for a specific variable27%
H04NPictorial communication, e.g. television6%
B01DSeparation3%
H03HImpedance networks, e.g. resonant circuits3%
H03KPulse technique3%
H10NElectric solid-state devices not otherwise provided for3%
PatentTitleYear
4,673,955'Ink receptacle for ink jet printer'19874,591,883'Ink-jet printer head'19864,586,058'Ink jet printing apparatus'19864,559,544'Multi-nozzle head for ink on-demand type ink jet printer'19854,554,556'Color plotter'19854,518,974'Ink jet air removal system'19854,510,509'Ink ejection head'19854,301,459'Ink ejection apparatus comprising entrained air removal means'19814,300,144'Multiple-nozzle ink-jet recording apparatus'19814,296,418'Ink jet printing apparatus with reverse solvent flushing means'19814,293,867'Device for removing air bubbles formed and trapped in ink chamber of print head of ink-jet printer'19814,271,366'Analog signal delay circuit'19814,245,224'Drive circuit for ink jet discharging head'19814,222,060'Ink jet printing apparatus'19804,184,168'Ink-on-demand type ink jet head driving circuit'19804,183,029'Ink filter clogging sensor and indicator'19804,178,597'Color ink jet printing apparatus'19794,050,078'Automatic nozzle cleaning system for ink ejection printer'19774,045,802'Ink ejection printing apparatus comprising automatically actuated ejection orifice cap'19774,034,380'Ink ejection apparatus for printer'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1987Patents assigned to RICOH KK (20)· patent assignee history
1977–1987Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 20 | 1977–1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 20 | 1977–1987 |