Inventor
Tadashi Izawa
Inventor
Hachioji, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography36%
H04NPictorial communication, e.g. television27%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials9%
G02BOptical elements, systems or apparatus9%
PatentTitleYear
5,481,378'Image forming apparatus with an unapproved copy preventing means'19965,440,409'Image forming apparatus with an unapproved copy preventing means'19955,440,377'Apparatus for controlling speed of a developing roller as it engages a photoreceptor'19954,926,249'Color image reader having a lens and prism incorporated into a single unit'19904,746,951'Color image forming apparatus having an improved arrangement for mounting developing devices thereon'19884,472,242'Method of pipe line washing'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Patents assigned to MITSUBISHI HEAVY IND LTD (1)· patent assignee history
1984Patents assigned to MITSUBISHI PAPER MILLS LTD (1)· patent assignee history
1984Based in Kitagami, JP· patent location history
1988–1996Patents assigned to KONISHIROKU PHOTO IND (5)· patent assignee history
1988Based in Tokyo, JP· patent location history
1990–1996Based in Hachioji, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KONISHIROKU PHOTO IND | 5 | 1988–1996 |
| MITSUBISHI HEAVY IND LTD | 1 | 1984 |
| MITSUBISHI PAPER MILLS LTD | 1 | 1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hachioji, JP | 4 | 1990–1996 |
| Tokyo, JP | 1 | 1988 |
| Kitagami, JP | 1 | 1984 |