Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Monitor/warranty system for electrostatographic reproducing machines using replaceable cartridges

Monitor/warranty system for electrostatographic reproducing machines using replaceable cartridges

US Patent 4961088 · Granted Oct 2, 1990

Estimated economic value: $2,150,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Printer with outsourcing capability for color copies2016
Emergency notification system utilizing digital signage and remote surveillance 2014
Updating authentication server lists for users accessing shared access devices2013
Machine post-launch configuration and option upgrade2008
Mail piece producing machine having a wide swath envelope printing module2003
Media transport assembly incorporating vacuum grooves to flatten sheet2001
Paper driven rotary encoder that compensates for nip-to-nip handoff error2001
Monitoring system with dual memory for electrophotographic printing machines usi1998
Printer toner usage indicator with image weighted calculation1994
Printer toner usage indicator with image weighted calculation1994
Monitoring system with dual memory for electrophotographic printing machines usi1994
Charge erase device for copying or reproduction machines and printers1985