Inventor

Shigeo Utsumi

Inventor

Yokohama, JP

Overview

31→

Patents

1986–1996

Patent span

Performing operations

Primary field (CPC B)

Patents· 31 as inventor

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

C08Jprimary

C08JWorking-up15%

Y10TTechnical subjects covered by former us classification15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

G11BInformation storage based on relative movement between record carrier and transducer12%

B29CShaping or joining of plastics11%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts10%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%

B29DProducing particular articles from plastics or from substances in a plastic state2%

B41MPrinting, duplicating, marking, or copying processes2%

PatentTitleYear

5,510,192'Polyethylene naphthalate multilayered film for high density magnetic recording medium'1996 5,441,800'Laminated polyester film for magnetic tape'1995 5,366,783'Laminated polyester film for magnetic tape having specific surface properties'1994 RE034727'Low-shrinkage polyester film and preparation thereof'1994 5,318,823'Polyester multilayered film for high-density magnetic disc'1994 5,139,727'Process for producing biaxially oriented polyester film'1992 5,093,064'Low-shrinkage polyester film and preparation thereof'1992 5,070,180'Shrinkable copolyester film'1991 5,045,379'Polyester film for high density magnetic recording medium'1991 4,990,400'Polyester films, magnetic recording media and film capacitors produced therefrom'1991 4,985,537'Process of making a biaxially stretched polyester film and biaxially stretched polyester film'1991 4,985,538'Shrinkable polyester film'1991 4,977,230'Heat-resistant film or sheet'1990 4,977,020'Transfer material for use with printer'1990 4,960,636'Biaxially oriented polyester film for floppy disk'1990 4,876,137'Polyethylene naphthalate film for high-density magnetic recording media of floppy disk'1989 4,865,898'Polyester film for magnetic recording media'1989 4,814,221'Polyethylene-2,6-naphthalate film for capacitor'1989 4,814,426'Shrinkable polyester film for packaging'1989 4,812,360'Thermal transfer (printing) material'1989 4,804,736'Polyethylene-2,6-naphthalate film for magnetic recording tapes'1989 4,799,772'Uniaxially high-oriented polyethylene naphthalate film for liquid crystal panel substrates'1989 4,781,963'Magnetic recording medium'1988 4,769,190'Process for producing polyphenylene sulfide film'1988 4,756,953'Uniaxially high-oriented polyethylene naphthalate film for polarizing plates'1988 4,725,479'Polyethylene naphthalate film for membrane switch'1988 4,708,902'Polyester films suitable for use in magnetic recording media'1987 4,680,217'Polyester film for magnetic recording media'1987 4,677,188'Transparent slippery biaxially stretched polyester film'1987 4,617,164'Process for stretching polyester films'1986 4,610,833'Process for preparing biaxially stretched polyester films'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1994Patents assigned to DIAFOIL CO LTD (26)· patent assignee history

1986–1991Based in Yokohama, JP· patent location history

1990Patents assigned to MITSUBISHI CHEM IND (1)· patent assignee history

1990–1996Based in Yamato, JP· patent location history

1990–1994Based in Kanagawa, JP· patent location history

1992Patents assigned to DAIFOIL COMPANY LIMITED (1)· patent assignee history

1994–1996Patents assigned to DIAFOIL HOECHST CO LTD (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DIAFOIL CO LTD	26	1986–1994
DIAFOIL HOECHST CO LTD	4	1994–1996
DAIFOIL COMPANY LIMITED	1	1992
MITSUBISHI CHEM IND	1	1990

Locations

Location	Patents	Span
Yokohama, JP	20	1986–1991
Yamato, JP	9	1990–1996
Kanagawa, JP	2	1990–1994