Inventor
Katsuhiro Sakaizawa
Inventor
Numazu, JP
Overview
Patents· 41 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography80%
B41JTypewriters10%
G01DMeasuring not specially adapted for a specific variable2%
G05DSystems for controlling or regulating non-electric variables2%
H04NPictorial communication, e.g. television2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
Y10TTechnical subjects covered by former us classification2%
PatentTitleYear
8,489,011'Image forming apparatus and image forming system'20138,437,678'Image forming apparatus and image forming system'20138,019,260'Image forming apparatus'20118,019,258'Developing apparatus'20117,962,076'Image forming apparatus'20117,890,032'Developing apparatus having a scraping member'20117,840,168'Developing apparatus'20107,773,923'Developing apparatus and image forming apparatus'20107,734,205'Image forming apparatus'20107,668,490'Developing apparatus having developer supplying member in spaced apart relationship with developer carrying member'20107,068,956'Image forming apparatus and control method for the image forming apparatus'20067,020,419'Image formation apparatus, and control method for image formation apparatus'20066,954,595'Image forming apparatus featuring a developer carrying member with a controlled operation time and related control method'20056,915,094'Composition for accessing a memory in image formation apparatus and method for accessing a memory in image formation apparatus'20056,751,423'Developing apparatus and image forming apparatus'20046,714,754'Developing roller for electrophotography, developing apparatus, apparatus unit and image forming apparatus'20046,647,229'Image forming apparatus with flexible charging member for use with spherical toner'20036,611,669'Image forming apparatus with superposed direct current and alternating current charging voltage'20036,603,935'Image forming apparatus featuring application of superimposed DC and AC voltages and DC voltage'20036,564,027'Image forming apparatus'20036,560,426'Image forming apparatus'20036,484,007'Image forming apparatus featuring a conductive developing roller including a mandrel, an elastic layer, an intermediate layer, and a charge-providing layer formed thereon'20026,438,331'Image forming apparatus with cleaning sequence of contact charging members'20026,397,032'Image forming apparatus including a developer bearing member having multiple layers'20026,389,253'Image forming apparatus featuring a regulating member for regulating a number of layers of a developer carried by a developer carrying member'20026,376,087'Developing agent carrier, developing unit, and image forming apparatus'20026,345,166'Developer scraping member and developing apparatus'20026,229,980'Developing apparatus featuring first and second developer chambers and guide member for directing stripped-off developer'20016,185,387'Image forming apparatus'20015,970,279'Image forming apparatus'19995,809,379'Electrophotography having photosensitive member with charge blocking overlayer'19985,734,390'Image forming apparatus'19985,729,785'Image forming apparatus with ink jet and electrophotographic image forming means'19985,587,773'Electrophotographic apparatus for performing image exposure and development simultaneously'19965,570,451'Image forming apparatus including plural image forming means and plural recording medium transport passages'19965,570,166'Developing apparatus that applies voltage to developer layer thickness regulating member'19965,561,500'Image forming apparatus with plural types of image forming devices'19965,534,982'Developing apparatus'19965,519,472'Developing apparatus using elastic blade'19965,436,709'Fixing device which controls an energizing condition of a heater after fixing operation'19955,311,268'Fixing device using fuzzy inference'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2013Patents assigned to CANON KK (41)· patent assignee history
1994–1998Based in Tokyo, JP· patent location history
1996–1998Based in Kawasaki, JP· patent location history
1999–2013Based in Numazu, JP· patent location history
2002–2006Based in Shizuoka, JP· patent location history
2013Patents assigned to ENDO RIE (1)· patent assignee history
2013Patents assigned to HAGIWARA KAZUNARI (1)· patent assignee history
2013Patents assigned to SAKAIZAWA KATSUHIRO (1)· patent assignee history
2013Patents assigned to TAKAHASHI NORIO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CANON KK | 41 | 1994–2013 |
| ENDO RIE | 1 | 2013 |
| HAGIWARA KAZUNARI | 1 | 2013 |
| SAKAIZAWA KATSUHIROself | 1 | 2013 |
| TAKAHASHI NORIO | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Numazu, JP | 20 | 1999–2013 |
| Shizuoka, JP | 10 | 2002–2006 |
| Tokyo, JP | 6 | 1994–1998 |
| Kawasaki, JP | 5 | 1996–1998 |