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Inventor

Takeo Hirabayashi

Inventor
Tokyo, JP

Overview

3→
Patents
1978–1983
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G03Cprimary
G03CPhotosensitive materials for photographic purposes60%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
4,416,967'Diazo copying element'19834,155,762'Liquid developer for binary diazo copying materials'19794,119,465'Diazo copying material for secondary original'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1983Patents assigned to RICOH KK (3)· patent assignee history
1978–1979Based in Tokyo, JP· patent location history
1983Based in Numazu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK31978–1983
Locations
LocationPatentsSpan
Tokyo, JP21978–1979
Numazu, JP11983