Inventor

Toshiyuki Kajiwara

Inventor

Hitachi, JP

Overview

49→

Patents

1976–2003

Patent span

Performing operations

Primary field (CPC B)

Patents· 49 as inventor

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

B21Bprimary

B21BRolling of metal55%

Y10TTechnical subjects covered by former us classification10%

B23KSoldering or unsoldering8%

B22DCasting of metals4%

H05KPrinted circuits4%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling3%

B23DPlaning3%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables3%

C04BLime, magnesia3%

B05CApparatus for applying fluent materials to surfaces, in general1%

PatentTitleYear

6,581,429'Strip wiper device, strip wiping method, rolling mill and rolling method'2003 6,286,354'Rolling mill and rolling method and rolling equipment'2001 6,213,381'Method of bonding metal plates, apparatus therefor and hot strip mill'2001 6,116,073'Cluster type multi-roll rolling mill and rolling method'2000 6,076,388'Rolling mill, hot rolling system, rolling method and rolling mill revamping method'2000 5,934,130'Rolling mill drive apparatus, rolling mill and rolling method'1999 5,884,832'Method of bonding metal plates, apparatus therefor and hot strip mill'1999 5,768,927'Rolling mill, hot rolling system, rolling method and rolling mill revamping method'1998 5,692,407'Shape control in a strip rolling mill of cluster type'1997 5,666,837'Rolling mill and method of using the same'1997 5,653,137'Five-high rolling mill'1997 5,651,411'Apparatus for and method of continuous casting'1997 5,636,543'Hot steel plate rolling mill system and rolling method'1997 5,634,510'Integrated manufacturing system'1997 5,634,257'Hot strip rolling plant and method directly combined with continuous casting'1997 5,524,465'Work rolls crossing type mill, rolling system and rolling method'1996 5,463,801'Rolling mill coating equipment'1995 5,406,817'Rolling mill and rolling method'1995 5,365,764'Cross rolling mill, cross rolling method and cross rolling mill system'1994 5,262,247'Thin copper foil for printed wiring board'1993 5,260,541'Crop shear apparatus and crop shear equipment'1993 5,239,851'Rolling method of multi-high rolling mill for obtaining accurate sheet crown'1993 5,234,154'Method and apparatus for joining hot strips'1993 5,219,114'Continuous hot strip rolling system and method thereof'1993 5,218,848'Method and apparatus for correcting a widthwise bend in an end portion of a hot-rolled sheet-shaped product'1993 5,174,144'4-High rolling mill'1992 5,121,873'Method of and apparatus for joining hot materials to be rolled to each other as well as continuous hot rolling method and system'1992 5,119,656'Rolling mill with offset work rolls positioned and controlled by support rolls and method of using same'1992 5,114,543'Method of making thin copper foil for printed wiring board'1992 4,941,251'Rollers for rolling mills'1990 4,918,965'Multihigh rolling mill'1990 4,839,949'Rollers for rolling mills'1989 4,719,784'Roll bending apparatus for rolling mill'1988 4,706,871'Method of continuously hot-rolling steel pieces'1987 4,700,312'Method and apparatus for controlling snake motion in rolling mills'1987 4,614,103'Rolling mill'1986 4,613,093'Apparatus for looping belt-like materials'1986 4,537,057'Method for RD rolling sheet metal'1985 4,485,132'Method of continuous coating of metallic strip material'1984 4,387,006'Method of treating the surface of the copper foil used in printed wire boards'1983 4,369,646'Rolling mill and method for rolling a sheet material'1983 4,294,394'Method of and apparatus for continuously rolling steel slabs'1981 4,194,382'Rolling mill'1980 4,188,809'Apparatus for detecting the shape of a strip'1980 4,162,627'Rolling mill'1979 4,123,011'Coil unwind and wind-up method and apparatus therefor'1978 4,036,041'Gage control system for rolling mill'1977 3,943,742'Rolling mill'1976 3,940,191'Multiple-row roller bearing'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2003Patents assigned to HITACHI LTD (46)· patent assignee history

1976–1997Based in Hitachi, JP· patent location history

1983–1993Patents assigned to FUKUDA METAL FOIL POWDER (2)· patent assignee history

1983–1993Based in Kyoto, JP· patent location history

1984Patents assigned to NISSHIN STEEL CO LTD (1)· patent assignee history

1987Patents assigned to NIPPON STEEL CORP (1)· patent assignee history

1992Patents assigned to FUKUDA KINOKU HAKAFUN KOGYO KA (1)· patent assignee history

1993–2001Based in Tokyo, JP· patent location history

1996–2003Based in Katsushika-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	46	1976–2003
FUKUDA METAL FOIL POWDER	2	1983–1993
FUKUDA KINOKU HAKAFUN KOGYO KA	1	1992
NIPPON STEEL CORP	1	1987
NISSHIN STEEL CO LTD	1	1984

Locations

Location	Patents	Span
Hitachi, JP	27	1976–1997
Tokyo, JP	16	1993–2001
Katsushika-ku, JP	3	1996–2003
Kyoto, JP	3	1983–1993