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Inventor

Shojiro Watanabe

Inventor
Shizuoka, JP

Overview

7→
Patents
1983–1989
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 7 as inventor

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

B41Mprimary
B41MPrinting, duplicating, marking, or copying processes28%
Y10TTechnical subjects covered by former us classification22%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
C04BLime, magnesia11%
C23CCoating metallic material11%
C30BSingle-crystal growth11%
PatentTitleYear
4,849,146'Method for producing pyrolytic boron nitride article'19894,690,841'Pyrolytic boron nitride article'19874,559,242'Method of preparing color developer sheets'19854,489,337'Heat-sensitive recording paper'19844,485,139'Heat-sensitive recording paper'19844,473,831'Heat sensitive recording paper'19844,408,781'Recording materials'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1985Patents assigned to FUJI PHOTO FILM CO LTD (5)· patent assignee history
1983Based in Fujinomiya, JP· patent location history
1984–1985Based in Shizuoka, JP· patent location history
1987–1989Patents assigned to DENKI KAGAKU KOGYO KK (2)· patent assignee history
1987–1989Based in Machida, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJI PHOTO FILM CO LTD51983–1985
DENKI KAGAKU KOGYO KK21987–1989
Locations
LocationPatentsSpan
Shizuoka, JP41984–1985
Machida, JP21987–1989
Fujinomiya, JP11983