Inventor · disambiguated record
Han Wool Cha
Also filed as: CHA HAN WOOL · Cha han
9 granted patents·3 pending applications·2 citations·filing 2017–2023
75Inventor score
Top patents by PatentIndex Score
12 records- 0188US11824823B2Instant messaging server providing multiple types of chat roomsKAKAO CORP·Filed 2021·Granted Nov 21, 2023·2 cites·20 claims
- 0266US12348470B2Instant messaging server providing multiple types of chat roomsKAKAO CORP·Filed 2023·Granted Jul 1, 2025·0 cites·11 claims
- 0360US12126579B2Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Granted Oct 22, 2024·0 cites·20 claims
- 0457US12299059B2Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Granted May 13, 2025·0 cites·17 claims
- 0554US12323374B2Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Granted Jun 3, 2025·0 cites·20 claims
- 0654US12095714B2Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Granted Sep 17, 2024·0 cites·19 claims
- 0754US2023370404A1Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Application pending·0 cites
- 0853US2024195906A1Method and server for providing notification message to user terminalKAKAO CORP·Filed 2023·Application pending·0 cites
- 0951US12438833B2Method and apparatus for messaging serviceKAKAO CORP·Filed 2023·Granted Oct 7, 2025·0 cites·20 claims
- 1049US2021334649A1Apparatus and method for distributed reinforcement learningUNIV YONSEI IACF·Filed 2020·Application pending·0 cites
- 1139US11330444B2Cognitive radio communication control device for determining cognitive radio terminal and cognitive radio terminal determining methodUNIV YONSEI IACF·Filed 2018·Granted May 10, 2022·0 cites·16 claims
- 1235US11071110B2Method and device for allocating dynamic frequency for secondary user in cognitive radio networkUNIV YONSEI IACF·Filed 2017·Granted Jul 20, 2021·0 cites·11 claims
Join the waitlist — get patent alerts
Get an alert when Han Wool Cha files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →