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Copyright © 2010 -
January 16, 2025
Title of Patent Application: An Electrostatic Speaker System
Research and Development HAH
|
Country |
Official No. |
Status |
Date grant of Patent |
|
PCT |
PCT/NL2007/050607 |
Published |
Jun 04, 2009 |
|
Japan |
JP5192050 (B2) |
Granted |
Feb 08, 2013 |
|
China |
CN101933343 (B) |
Granted |
Nov 06, 2013 |
|
United States of America |
US8705767 (B2) |
Granted |
Apr 22, 2014 |
|
Republic of Korea |
KR101511575 (B1) |
Granted |
Apr 07, 2015 |
|
European Region |
EP2215856 (B1) |
Granted |
Jan 31, 2019 |
|
Hong Kong |
HK1147375 |
Granted |
Mar 27, 2020 |
Copy EP Patent Application including Claims as granted by EPO (Feb 27, 2019)