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Seoul, South Korea

42 Maru Inc.

USPTO Granted Patents = 26

EPO Patents = 2

Trademarks = 2

Forward Citations = 11

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37 inventors (with patents filed for the assignee):

Dong Hwan Kim (26 out of 56 patents)

You Kyung Kwon (10 out of 11 patents)

Woo Tae Jeong (9 out of 10 patents)

4. Hyun Ok Kim (8 out of 11 patents)

5. Han Su Kim (4 out of 6 patents)

6. In Je Seong (4 out of 4 patents)

7. Kibong Sung (3 out of 3 patents)

8. SeongYeop Jeong (3 out of 3 patents)

9. Seanie Lee (3 out of 4 patents)

10. So Young Ko (3 out of 3 patents)

11. Da Hea Moon (3 out of 3 patents)

12. Ki Beom Kwon (3 out of 3 patents)

13. Sun Young Lee (2 out of 139 patents)

14. Hyuk Sung Kwon (2 out of 2 patents)

15. Gilje Seong (2 out of 2 patents)

Core Competencies:

Natural Language Query

SQL Query

Document Retrieval

Text Summarization

Question-Answering

Machine Reading Comprehension

Adversarial Learning

Data Structuring

QA Models

Artificial Intelligence

Speech Recognition

26 patents: Sort by Forward Citations

1. 12688223 - Method and apparatus for summarizing document based on document retrieval (2026-07-21),

2. 12688188 - Device and method for converting natural language query into SQL query (2026-07-21),

3. 12664188 - Method and apparatus for question-answering using a database consist of query vectors (2026-06-23),

4. 12530917 - Text data structuring method and apparatus using line information (2026-01-20),

5. 12394238 - Method and apparatus for data structuring of text (2025-08-19),

6. 12373671 - Method and apparatus for generating Q and A model by using adversarial learning (2025-07-29),

7. 12259917 - Method of retrieving document and apparatus for retrieving document (2025-03-25),

8. 12254263 - Method, device, and system for analyzing unstructured document (2025-03-18),

9. 12182184 - Method and apparatus for question-answering using a database consist of query vectors (2024-12-31),

10. 12159118 - Architecture for generating QA pairs from contexts (2024-12-03),

11. 12141532 - Device and method for machine reading comprehension question and answer (2024-11-12),

12. 12130851 - Method and system for improving performance of text summarization (2024-10-29),

13. 12130808 - Device and method for converting natural language query into SQL query (2024-10-29),

14. 12033413 - Method and apparatus for data structuring of text (2024-07-09),

15. 11960838 - Method and device for reinforcement of multiple choice QA model based on adversarial learning techniques (2024-04-16),

Company Overview

42 Maru Inc. is a technology company based in Seoul, South Korea, specializing in advanced artificial intelligence solutions. The organization focuses on natural language processing and machine learning, developing innovative applications that enhance data analysis and decision-making processes. By leveraging cutting-edge algorithms and deep learning techniques, 42 Maru aims to transform how businesses interact with information, providing tools that streamline operations and improve efficiency across various sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

26 Patents

#190 in Seoul

#510 in South Korea

#24,781 in the World

Seoul, South Korea

42 Maru Inc.

Forward Citations = 11

37 inventors:

Dong Hwan Kim (26 out of 56 patents)

You Kyung Kwon (10 out of 11 patents)

Woo Tae Jeong (9 out of 10 patents)

4. Hyun Ok Kim (8 out of 11 patents)

5. Han Su Kim (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: 42 Maru Inc.. Retrieved from https://idiyas.com/company/42-maru

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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