Membership
Tour
Register
Log in
Kenji YASUKAWA
Follow
Person
Nagoya-shi, Aichi-ken, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Terminal device, and intercom system provided with terminal device
Patent number
10,757,266
Issue date
Aug 25, 2020
AIPHONE CO., LTD.
Seiya Yamakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Intercom system
Patent number
10,616,420
Issue date
Apr 7, 2020
AIPHONE CO., LTD.
Seiya Yamakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Collective housing/building entrance device and entryphone system h...
Patent number
10,334,114
Issue date
Jun 25, 2019
AIPHONE CO., LTD.
Seiya Yamakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Collective housing/building entrance device and entryphone system h...
Patent number
10,298,772
Issue date
May 21, 2019
AIPHONE CO., LTD.
Seiya Yamakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
INTERCOM SYSTEM
Publication number
20190281164
Publication date
Sep 12, 2019
AIPHONE CO., LTD.
Seiya YAMAKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TERMINAL DEVICE, AND INTERCOM SYSTEM PROVIDED WITH TERMINAL DEVICE
Publication number
20190124205
Publication date
Apr 25, 2019
AIPHONE CO., LTD.
Seiya YAMAKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COLLECTIVE HOUSING/BUILDING ENTRANCE DEVICE AND ENTRYPHONE SYSTEM H...
Publication number
20180295242
Publication date
Oct 11, 2018
AIPHONE CO., LTD.
Seiya YAMAKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE