Joon Chang — 58 Patents at IBM

Joon Chang has been granted 58 US patents while listed as an inventor at IBM. The first was granted in 2003 and the most recent in September 2025. Joon Chang ranks #41,319 of 4,157,543 US inventors in our database (top 0.99%). Patent records list Joon Chang in Seoul, WA, KR.

Issued Patents All Time

Showing 1–25 of 58 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12431118	Operation method of speech synthesis system	Sung Woong HWANG	2025-09-30
12426790	Apparatus and method for estimating blood pressure	Sang Kon Bae, Youn Ho Kim, Jin Woo CHOI, Jehyun Kyung, Joon-Young Yang +2 more	2025-09-30
12296837	Vehicle judder diagnostic method using artificial intelligence and mobile-based GDS	Jae-Min Jin, In-Soo Jung	2025-05-13
12300266	Computing device for attention-based joint training with noise suppression model for sound event detection technology robust against noise environment and method of thereof	Jin Young Son	2025-05-13
12257034	Apparatus and method for estimating bio-information	Sang Kon Bae, Jin Woo CHOI, Youn Ho Kim, Jehyun Kyung, Joon-Young Yang +2 more	2025-03-25
12207907	Apparatus and method for estimating blood pressure	Sang Kon Bae, Chang Mok Choi, Youn Ho Kim, Jin Woo CHOI, Jehyun Kyung +3 more	2025-01-28
12067989	Combined learning method and apparatus using deepening neural network based feature enhancement and modified loss function for speaker recognition robust to noisy environments	Joonyoung Yang	2024-08-20
12033613	Deep neural network based non-autoregressive speech synthesizer method and system using multiple decoder	Moa Lee	2024-07-09
11972751	Method and apparatus for detecting voice end point using acoustic and language modeling information for robust voice	Inyoung Hwang	2024-04-30
11908447	Method and apparatus for synthesizing multi-speaker speech using artificial neural network	Jae Uk Lee	2024-02-20
11854554	Method and apparatus for combined learning using feature enhancement based on deep neural network and modified loss function for speaker recognition robust to noisy environments	Joonyoung Yang	2023-12-26
11854497	Display apparatus, method for compensating for data signal thereof, and method for generating deep learning-based compensation model	Kwanghwan Ji, Kwan-Ho Park, Kiseok Chang, Junghoon SEO, Kipyo Hong +2 more	2023-12-26	$12,000
11790929	WPE-based dereverberation apparatus using virtual acoustic channel expansion based on deep neural network	Joon-Young Yang	2023-10-17
11721141	Method of AI-based vehicle diagnosis using CAN data and device thereof	Dong-Chul Lee, In-Soo Jung, Dong Yeoup Jeon	2023-08-08
11494643	Noise data artificial intelligence apparatus and pre-conditioning method for identifying source of problematic noise	Dong-Chul Lee, In-Soo Jung, Kyoung-Jin Noh	2022-11-08
11238877	Generative adversarial network-based speech bandwidth extender and extension method	Kyoungjin Noh	2022-02-01
11176950	Apparatus for recognizing voice speaker and method for the same	Yu Jin JUNG, Ki Hee PARK, Chang-Won Lee, Doh Hyun Kim, Tae Kyung Kim +2 more	2021-11-16
11017791	Deep neural network-based method and apparatus for combining noise and echo removal	Hyeji Seo	2021-05-25
10861466	Method and apparatus for packet loss concealment using generative adversarial network	Bong-Ki Lee	2020-12-08
10854218	Multichannel microphone-based reverberation time estimation method and device which use deep neural network	Myung In Lee	2020-12-01
10431240	Speech enhancement method and system	Seung Yeol Lee, Byeong-seob Ko, Song Kyu PARK, Tae-Jun Park	2019-10-01
9886430	Entity based content selection	Michael J. Patten	2018-02-06	$34,955,000
9847093	Method and apparatus for processing speech signal	Kang-eun Lee, Byeong-yong Jeon, Hyeon Seong KIM, Tae-Jun Park, Kwang-sub Song +3 more	2017-12-19
9729602	Audio signal quality measurement in mobile device	—	2017-08-08
9536539	Nonlinear acoustic echo signal suppression system and method using volterra filter	Ji Hwan Park	2017-01-03

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Joon Chang — 58 Patents

Issued Patents All Time

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