Inventor

Tazuko Ishizuka

Inventor

Urawa, JP

Overview

6→

Patents

1988–2021

Patent span

Physics

Primary field (CPC G)

Patents· 6 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein21%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices16%

H05KPrinted circuits16%

G02BOptical elements, systems or apparatus11%

B41JTypewriters5%

B41MPrinting, duplicating, marking, or copying processes5%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables5%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%

C09DCoating compositions, e.g. paints, varnishes or lacquers5%

C09JAdhesives5%

PatentTitleYear

11,104,538Method for producing printed material and system for producing printed material2021 5,078,474'Exposure apparatus having a magnifying lens system'1992 5,062,692'Exposure apparatus'1991 5,026,145'Exposure apparatus'1991 4,863,250'F..theta. lens system'1989 4,776,654'Scanning optical system'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1992Patents assigned to ASAHI OPTICAL CO LTD (4)· patent assignee history

1988Based in Tokyo, JP· patent location history

1989Patents assigned to ISHIZUKA TAZUKO (1)· patent assignee history

1989Based in Itabashi-ku, JP· patent location history

1991–1992Based in Urawa, JP· patent location history

2021Patents assigned to FUJIFILM BUSINESS INNOVATION CORP (1)· patent assignee history

2021Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASAHI OPTICAL CO LTD	4	1988–1992
FUJIFILM BUSINESS INNOVATION CORP	1	2021
ISHIZUKA TAZUKOself	1	1989

Locations

Location	Patents	Span
Urawa, JP	3	1991–1992
Kanagawa, JP	1	2021
Itabashi-ku, JP	1	1989
Tokyo, JP	1	1988