Inventor
Junji Kurokawa
Inventor
Yokohama, JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography50%
Y10TTechnical subjects covered by former us classification23%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%
C01BNon-metallic elements4%
C04BLime, magnesia4%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
PatentTitleYear
7,943,241'Composite ceramic body'20115,881,344'Image forming apparatus and charging device thereof'19995,792,533'Electrostatic charging roller'19985,786,091'Charge roller for an image forming apparatus'19985,689,770'Image forming apparatus which maintains a temperature of a charge roller'19975,619,311'Roller charging apparatus and image forming apparatus using the same'19975,602,627'Electrifying roller, roller electrifying apparatus using the same, and image forming apparatus using the same'19975,499,078'Charge roller and image forming apparatus using the same'19965,497,219'Charge rollers having improved layer structure and/or surface characteristics in an image forming apparatus'19965,479,243'Image forming apparatus and charging device thereof'19955,155,533'Bias application control device for image forming equipment'19924,965,871'Continuous plural page copying method for a copier'19904,578,331'Color image forming method'19864,278,343'Inversion developing method for electrophotography and relevant apparatuses'19813,992,089'Reader-printer apparatus with multiple supply rolls and charging devices'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1999Patents assigned to RICOH KK (14)· patent assignee history
1976–1999Based in Yokohama, JP· patent location history
1981Based in Tokyo, JP· patent location history
2011Patents assigned to KYOCERA CORP (1)· patent assignee history
2011Based in Higashiomi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 14 | 1976–1999 |
| KYOCERA CORP | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 13 | 1976–1999 |
| Higashiomi, JP | 1 | 2011 |
| Tokyo, JP | 1 | 1981 |