Inventor

Tamotsu Nagai

Inventor

Toyokawa, JP

Overview

6→

Patents

1981–2020

Patent span

Performing operations

Primary field (CPC B)

Patents· 6 as inventor

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

B23Bprimary

B23BTurning18%

B23DPlaning14%

Y10TTechnical subjects covered by former us classification14%

B23CMilling9%

B23GThread cutting9%

G05BControl or regulating systems in general9%

A47GHousehold or table equipment5%

B23PMetal-working not otherwise provided for5%

B24BMachines, devices, or processes for grinding or polishing5%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers5%

PatentTitleYear

10,814,408Replaceable-tip cutting tool main body and replaceable-tip cutting tool2020 8,257,144'Neck portion grinding apparatus and grinding device employed in the neck portion grinding apparatus'2012 7,320,566'Cutting tool including detachable cutter head'2008 7,293,945'Non-rotary cutting tool and process of machining scroll member by using the same'2007 7,237,992'Process of machining scroll member by using non-rotary cutting tool'2007 4,248,625'Method of operating a blast furnace'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to KAWASAKI STEEL CO (1)· patent assignee history

1981Based in Chiba, JP· patent location history

2007–2020Patents assigned to OSG CORP (5)· patent assignee history

2007–2020Based in Toyokawa, JP· patent location history

2008Based in Aichi, JP· patent location history

2012Patents assigned to AOKI WATARU (1)· patent assignee history

2012Patents assigned to BTT CORP (1)· patent assignee history

2012Patents assigned to HAMATAKE YASUO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
OSG CORP	5	2007–2020
AOKI WATARU	1	2012
BTT CORP	1	2012
HAMATAKE YASUO	1	2012
KAWASAKI STEEL CO	1	1981

Locations

Location	Patents	Span
Toyokawa, JP	4	2007–2020
Aichi, JP	1	2008
Chiba, JP	1	1981