Inventor

Toshikazu Takehana

Inventor

Suwa, JP

Overview

2000–2007

Patent span

Mechanical engineering

Primary field (CPC F)

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

F16Cprimary

F16CShafts30%

Y10TTechnical subjects covered by former us classification20%

G11BInformation storage based on relative movement between record carrier and transducer15%

H02KDynamo-electric machines15%

B22FWorking metallic powder10%

A44CPersonal adornments, e.g. jewellery5%

A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2000–2002Patents assigned to HITACHI POWDERED METAL CO LTD (2)· patent assignee history

2000–2002Based in Suwa, JP· patent location history

2003–2007Patents assigned to HITACHI POWDERED METALS (5)· patent assignee history

2003–2004Patents assigned to HITACHI LTD (2)· patent assignee history

2004–2005Patents assigned to MINEBEA CO LTD (2)· patent assignee history

2004Based in Edozaki, JP· patent location history

2004Based in Inashiki-gun, JP· patent location history

2005Based in Ibaraki, JP· patent location history

2007Based in Chiba, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI POWDERED METALS	5	2003–2007
HITACHI LTD	2	2003–2004
HITACHI POWDERED METAL CO LTD	2	2000–2002
MINEBEA CO LTD	2	2004–2005

Locations