Inventor
Shuho Yokokawa
Inventor
Ibaraki, JP
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography65%
B41JTypewriters9%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables9%
LOC166%
G02BOptical elements, systems or apparatus3%
G06KGraphical data reading3%
H04NPictorial communication, e.g. television3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
7,450,883'Film loader for an image forming apparatus'20087,336,917'Film loader for an image forming apparatus'20087,295,794'Film loader for an image forming apparatus'20076,947,698'Fixing apparatus of electrophotographic printer'20056,927,875'Printing system and printing method'20056,650,864'Printing system'20036,601,951'Printers and printing method'2003D0469462'Heater lamp unit for fixing toner in an image forming apparatus'20036,496,672'Image production apparatus'20026,442,360'Lamp holder, and lamp cartridge using the same and fixing unit using the same'20026,393,248'Fixing device of image forming apparatus and fixing roller'20026,285,854'Image recording apparatus'20016,130,408'Recording apparatus with conveyed recording sheet heated by movable heater'20006,104,907'Image recording apparatus which prevents variation in speed of a recording medium and reduces shift values thereof'2000D0420042'Cleaning member for fixing roller in an image forming apparatus'20005,995,130'Laser beam scanning apparatus and method providing controllable print density'19995,881,348'Release agent supplying member, release agent supplying apparatus and fixing apparatus using the same'19995,862,436'Fixing apparatus and method for electrophotographic apparatus including temperature detecting mechanism for heat roller'19995,842,098'Fixing apparatus and fixing method for electrophotographic apparatus'19985,805,953'Method and apparatus for indicating time for exchanging toner recovery container of electrographic apparatus'19985,802,444'Electrophotographic apparatus for a continuous strip of paper sheets fixed by a heat fixing unit'19985,774,777'Continuous recording medium friction-conveying mechanism in image forming apparatus'19985,745,817'Electrophotographic apparatus and paper detector thereof and paper detecting method thereof'19985,652,949'Preheating controller for a two-stage electrophotographic printing system'19975,606,403'Toner supply control system for an electrophotographic apparatus'19975,557,386'Toner recovering device for electrophotographic apparatus and toner recovering filter for said toner recovering device'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2005Patents assigned to HITACHI KOKI KK (20)· patent assignee history
1996–2008Based in Ibaraki, JP· patent location history
1997–2002Based in Mito, JP· patent location history
1998–2002Patents assigned to HITACHI LTD (5)· patent assignee history
1999Based in Ibarakai, JP· patent location history
2002Patents assigned to HITACHI KOKI CO INC (1)· patent assignee history
2003Based in Hitachinaka, JP· patent location history
2005–2008Patents assigned to RICOH PRINTING SYS LTD (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI KOKI KK | 20 | 1996–2005 |
| HITACHI LTD | 5 | 1998–2002 |
| RICOH PRINTING SYS LTD | 4 | 2005–2008 |
| HITACHI KOKI CO INC | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 12 | 1996–2008 |
| Mito, JP | 11 | 1997–2002 |
| Hitachinaka, JP | 2 | 2003 |
| Ibarakai, JP | 1 | 1999 |