Inventor

Keisuke Katoh

Inventor

Numazu, JP

Overview

6→

Patents

1979–2011

Patent span

Physics

Primary field (CPC G)

Patents· 6 as inventor

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

G03Gprimary

G03GElectrography44%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests22%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers11%

C02FTreatment of water, waste water, sewage, or sludge11%

C13BProduction of sucrose11%

PatentTitleYear

8,033,447'Container storage box for deformable container containing fine particles for image formation'2011 7,577,379'Toner container, toner supply device and image forming apparatus'2009 7,389,071'Apparatuses for image forming capable of effectively conveying developer therefrom and a method of effectively forming a reinforcing member adhering to the apparatuses'2008 7,184,691'Toner container, toner supply device and image forming apparatus'2007 4,362,571'Method for refining sugar solutions'1982 4,163,715'Method for treatment of waste water'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1982Patents assigned to AGENCY IND SCIENCE TECHN (2)· patent assignee history

1979Patents assigned to SUMITOMO JUKIKAI ENVIROTECH IN (1)· patent assignee history

1979Based in Hiratsuka, JP· patent location history

1982Based in Matsudo, JP· patent location history

2007–2009Patents assigned to RICOH KK (3)· patent assignee history

2007–2011Based in Numazu, JP· patent location history

2011Patents assigned to RICOH CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	3	2007–2009
AGENCY IND SCIENCE TECHN	2	1979–1982
RICOH CO LTD	1	2011
SUMITOMO JUKIKAI ENVIROTECH IN	1	1979

Locations

Location	Patents	Span
Numazu, JP	4	2007–2011
Matsudo, JP	1	1982
Hiratsuka, JP	1	1979