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Inventor

Yoshitaka Tomiyama

Inventor
Kyoto, JP

Overview

2→
Patents
1999–2001
Patent span
Performing operations
Primary field (CPC B)

Patents· 2 as inventor

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

B22Fprimary
B22FWorking metallic powder17%
B60LPropulsion of electrically-propelled vehicles17%
C04BLime, magnesia17%
C22CAlloys17%
F16DCouplings for transmitting rotation17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
6,183,667'Titanium-and copper-containing carbon composite material and process for the production thereof'20015,964,334'Wet friction contact device'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2001Patents assigned to JAPAN POWDER METALLURG CO LTD (2)· patent assignee history
1999Patents assigned to TOYOTA MOTOR CO LTD (1)· patent assignee history
1999–2001Based in Kyoto, JP· patent location history
2001Patents assigned to ACROSS CO (1)· patent assignee history
2001Patents assigned to RAILWAY TECHNICAL RES INST (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN POWDER METALLURG CO LTD21999–2001
ACROSS CO12001
RAILWAY TECHNICAL RES INST12001
TOYOTA MOTOR CO LTD11999
Locations
LocationPatentsSpan
Kyoto, JP21999–2001