Inventor

Yoshio Sakata

Inventor

Tokyo, JP

Overview

15→

Patents

1980–2005

Patent span

Physics

Primary field (CPC G)

Patents· 15 as inventor

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

G03Gprimary

G03GElectrography27%

B29CShaping or joining of plastics8%

G06FElectric digital data processing8%

H01FMagnets8%

H04MTelephonic communication8%

B29DProducing particular articles from plastics or from substances in a plastic state4%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts4%

B29LIndexing scheme associated with subclass b29c, relating to particular articles4%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%

G01RMeasuring electric variables4%

PatentTitleYear

6,916,393'Multi-layered endless belt, medium conveying belt made of the same, production method thereof, and forming apparatus thereof'2005 6,901,141'Echo canceller'2005 6,839,426'Echo cancellor'2005 6,289,469'Semiconductor integrated circuit having a plurality of processing circuits respectively executing necessary processes and a plurality of data holding circuits corresponding to the processing circuits'2001 5,420,392'Fixing device and heat roller therefor'1995 5,416,746'Memory circuit for alternately accessing data within a period of address data'1995 5,384,957'Method for producing a magnet roll'1995 5,362,943'Fixing device and heat roller therefor'1994 5,337,409'Parallel/serial data conversion system'1994 5,286,950'Fixing device and heat roller therefor'1994 5,158,852'Electrophotographic development process'1992 4,922,437'Image information processing apparatus'1990 4,517,539'Megnetic device'1985 4,509,031'Magnetic roller device'1985 4,197,434'Telephone exchange apparatus'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to HITACHI LTD (1)· patent assignee history

1980–2005Based in Tokyo, JP· patent location history

1985–1995Patents assigned to KANEGAFUCHI CHEMICAL IND (6)· patent assignee history

1985–1995Based in Kanagawa, JP· patent location history

1985–2005Based in Yamato, JP· patent location history

1990–1994Patents assigned to TOSHIBA KK (2)· patent assignee history

1990–1994Based in Yokohama, JP· patent location history

1995–2005Patents assigned to OKI ELECTRIC IND CO LTD (4)· patent assignee history

1995Patents assigned to KANEGAFUCHI KAGAKA KOGYO KABUS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KANEGAFUCHI CHEMICAL IND	6	1985–1995
OKI ELECTRIC IND CO LTD	4	1995–2005
TOSHIBA KK	2	1990–1994
HITACHI LTD	1	1980
KANEGAFUCHI KAGAKA KOGYO KABUS	1	1995

Locations

Location	Patents	Span
Tokyo, JP	5	1980–2005
Kanagawa, JP	5	1985–1995
Yamato, JP	3	1985–2005
Yokohama, JP	2	1990–1994