Inventor
Teruyuki Ohnuma
Inventor
Yokohama, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography35%
H05BElectric heating15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
C09KMaterials for miscellaneous applications, not provided for elsewhere12%
H10KOrganic electric solid-state devices12%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%
G06FElectric digital data processing4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
5,153,073'Electroluminescent device'19925,118,986'Electroluminescent device'19925,093,210'Electroluminescent device'19925,077,142'Electroluminescent devices'19914,707,570'Manual information input device'19874,382,420'Development apparatus'19834,350,749'Reverse development method'19824,286,543'Apparatus for developing electrostatic image'19814,201,465'Drum cleaning process and apparatus for electrophotography'19804,194,830'Development apparatus'19804,193,679'Electrophotographic apparatus comprising improved imaging system'19804,165,393'Magnetic brush developing process for electrostatic images'19794,119,060'Toner charging apparatus'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1992Patents assigned to RICOH KK (13)· patent assignee history
1978–1983Based in Yokohama, JP· patent location history
1980Based in Tokyo, JP· patent location history
1987–1992Based in Shizuoka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 13 | 1978–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 6 | 1978–1983 |
| Shizuoka, JP | 5 | 1987–1992 |
| Tokyo, JP | 2 | 1980 |