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Inventor

Tutomu Tawa

Inventor
Katsuta, JP

Overview

2→
Patents
1979–1994
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

F21Vprimary
F21VFunctional features or details of lighting devices or systems thereof25%
G02BOptical elements, systems or apparatus25%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices25%
H01JElectric discharge tubes or discharge lamps25%
PatentTitleYear
5,302,999'Illumination method, illumination apparatus and projection exposure apparatus'19944,163,308'Deflection yoke assembly positioning device'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1994Patents assigned to HITACHI LTD (2)· patent assignee history
1979Based in Yokohama, JP· patent location history
1994Based in Katsuta, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD21979–1994
Locations
LocationPatentsSpan
Katsuta, JP11994
Yokohama, JP11979