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Inventor

Masakatu Sakamoto

Inventor
Hachiohji, JP

Overview

3→
Patents
1991–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers40%
C23CCoating metallic material20%
G07FCoin-freed or like apparatus20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
11,037,395Gaming device display systems, gaming devices and methods for providing lighting enhancements to gaming devices20215,031,720'Speaker diaphragm'19914,987,002'Process for forming a crystalline diamond film'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to KENWOOD CORP (2)· patent assignee history
1991Patents assigned to NAMIKI PRECISION JEWEL CO LTD (1)· patent assignee history
1991Patents assigned to TOYO BOSEKI (1)· patent assignee history
1991Based in Hachiohji, JP· patent location history
2021Patents assigned to ARUZE GAMING HONG KONG LTD (1)· patent assignee history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KENWOOD CORP21991
ARUZE GAMING HONG KONG LTD12021
NAMIKI PRECISION JEWEL CO LTD11991
TOYO BOSEKI11991
Locations
LocationPatentsSpan
Hachiohji, JP21991
Tokyo, JP12021