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Inventor

Shigeyuki Masuda

Inventor
Tokyo, JP

Overview

4→
Patents
1977–2007
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G04Bprimary
G04BMechanically-driven clocks or watches33%
G02BOptical elements, systems or apparatus17%
G04CElectromechanical clocks or watches17%
H04NPictorial communication, e.g. television17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
7,161,751'Optical module and camera module'20074,291,398'Calendar display wheel guard construction of timepiece'19814,117,665'Magnetic shield plate mounting structure for an electronic timepiece'19784,044,543'Switching mechanism of an electronic wrist watch'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1981Patents assigned to SEIKO INSTR & ELECTRONICS (3)· patent assignee history
1977–1981Based in Tokyo, JP· patent location history
2007Patents assigned to SEIKO INSTR INC (1)· patent assignee history
2007Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO INSTR & ELECTRONICS31977–1981
SEIKO INSTR INC12007
Locations
LocationPatentsSpan
Tokyo, JP31977–1981
Chiba, JP12007