Ricoh Technology Research, Inc.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Nov 13, 2012 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 158 Total Citation Count
- May 27, 1997 Earliest Filing
- 5 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
8310960 Communication apparatus, method for controlling communication apparatus, communication system, program and mediumJan 13, 06Nov 13, 12[H04L, H04B, G06F]
6319646 Carrier for electrophotographic developer, method for manufacturing, developer, container including the developer, and image forming apparatus using the developer wherein the carrier satisfies the relationship 1.0.ltoreq.C2/C1.ltoreq.1.3Sep 18, 00Nov 20, 01[G03G]
6136483 Electrophotographic photoconductor and electrophotographic image forming apparatus using the photoconductorAug 26, 99Oct 24, 00[G03G]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6696390 Image transfer sheet, method for forming image on the image transfer sheet and image transfer method using the image transfer sheetExpiredSep 20, 00Feb 24, 04[B41M]
6496214 Image forming elements array, and optical printing head and image forming apparatus using the arrayExpiredFeb 18, 00Dec 17, 02[B41J, G02B]
6038411 Image forming apparatus having an intermediate transfer belt with variable moving speedExpiredDec 23, 98Mar 14, 00[G03G]
5870649 Image forming apparatus having an intermediate transfer belt with variable moving speed immediately following toner developmentExpiredMay 27, 97Feb 09, 99[G03G]
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