Inventor

Sadao Kakeno

Inventor

Yokohama, JP

Overview

1981–2005

Patent span

Performing operations

Primary field (CPC B)

Patents· 10 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B41Jprimary

B41JTypewriters62%

F16HGearing15%

G01DMeasuring not specially adapted for a specific variable15%

B43LArticles for writing or drawing upon8%

PatentTitleYear

6,878,090'Planetary differential gear type reduction device, driving device with a reduction mechanism and image forming apparatus'2005 6,705,970'Planetary differential gear type reduction device, driving device with a reduction mechanism and image forming apparatus'2004 4,847,631'Charge and deflection control type ink jet printer'1989 4,800,398'Ink-jet printer with an encased printer head unit'1989 4,524,365'Receptacle for waste ink collection in ink jet recording apparatus'1985 4,429,317'Ink ejection head'1984 4,322,732'Ink jet recording method'1982 4,321,608'Deflection plate array'1982 4,291,316'System for driving ink drop generator of ink-jet printer'1981 4,284,993'Multi-nozzle head for ink jet printer with ink supply pipe in ink chamber'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2005Patents assigned to RICOH KK (10)· patent assignee history

1981–1985Based in Yokohama, JP· patent location history

1989Based in Fujisawa, JP· patent location history

2004–2005Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	10	1981–2005

Locations

Location	Patents	Span
Yokohama, JP	6	1981–1985
Kanagawa, JP	2	2004–2005
Fujisawa, JP	2	1989