Inventor

Masao Shigeta

Inventor

Urayasu, JP

Overview

1985–2001

Patent span

Electricity

Primary field (CPC H)

Patents· 13 as inventor

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

H01Fprimary

H01FMagnets38%

Y10TTechnical subjects covered by former us classification19%

C22CAlloys14%

G06KGraphical data reading14%

G01CMeasuring distances, levels or bearings5%

G01RMeasuring electric variables5%

H05KPrinted circuits5%

PatentTitleYear

6,310,837'Magnetic recording medium'2001 6,202,926'Magnetic recording medium and method of making the same'2001 6,029,895'Magnetic recording medium and method of making the same'2000 5,252,148'Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same'1993 5,211,767'Soft magnetic alloy, method for making, and magnetic core'1993 5,207,841'Soft magnetic powder and magnetic shield composition'1993 4,923,533'Magnetic shield-forming magnetically soft powder, composition thereof, and process of making'1990 4,739,263'Magnetic sensor using the earth\'s magnetism'1988 4,637,843'Core of a noise filter comprised of an amorphous alloy'1987 4,621,248'Amorphous cut core'1986 4,603,314'Inductor'1986 4,587,507'Core of a choke coil comprised of amorphous magnetic alloy'1986 4,558,297'Saturable core consisting of a thin strip of amorphous magnetic alloy and a method for manufacturing the same'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2001Patents assigned to TDK CORP (12)· patent assignee history

1985–1988Based in Urayasu, JP· patent location history

1986Patents assigned to TDK ELECTRONICS CO LTD (1)· patent assignee history

1986–2001Based in Chiba, JP· patent location history

1990–2001Patents assigned to TOKYO MAGNETIC PRINTING (4)· patent assignee history

1990–1993Based in Narashino, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TDK CORP	12	1985–2001
TOKYO MAGNETIC PRINTING	4	1990–2001
TDK ELECTRONICS CO LTD	1	1986

Locations

Location	Patents	Span
Urayasu, JP	5	1985–1988
Chiba, JP	4	1986–2001
Narashino, JP	4	1990–1993