Inventor

Hirofumi Tsutsumi

Inventor

Kobe, JP

Overview

6→

Patents

1990–2012

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

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

C04Bprimary

C04BLime, magnesia12%

C21BManufacture of iron or steel12%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace12%

B01DSeparation6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

C22BProduction and refining of metals6%

F27BFurnaces, kilns, ovens or retorts in general6%

F28CHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction6%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application6%

G08BSignalling systems, e.g. personal calling systems6%

PatentTitleYear

8,268,231'Treatment method for high-temperature exhaust gas'2012 8,088,194'Method for producing hot briquette iron using high-temperature reduced iron and method and apparatus for controlling temperature of reduced iron for hot forming'2012 7,091,870'Security system and method of security service business'2006 6,998,067'Method of dusting-preventive treatment of powder having dusting property'2006 6,464,776'Dusting-inhibited cement composition improved in strength'2002 4,891,570'Static var compensator with thyristor control'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to HITACHI LTD (1)· patent assignee history

1990–2006Based in Tokyo, JP· patent location history

2002Patents assigned to ASO CEMENT CO LTD (1)· patent assignee history

2002Based in Fukuoka, JP· patent location history

2006–2012Patents assigned to TSUTSUMI HIROFUMI (3)· patent assignee history

2006Based in Kasuya-gun, JP· patent location history

2012Patents assigned to KOBE STEEL LTD (2)· patent assignee history

2012Patents assigned to MIYAKAWA YUTAKA (2)· patent assignee history

2012Based in Kobe, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TSUTSUMI HIROFUMIself	3	2006–2012
KOBE STEEL LTD	2	2012
MIYAKAWA YUTAKA	2	2012
ASO CEMENT CO LTD	1	2002
HITACHI LTD	1	1990

Locations

Location	Patents	Span
Kobe, JP	2	2012
Tokyo, JP	2	1990–2006
Kasuya-gun, JP	1	2006
Fukuoka, JP	1	2002