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Dublin, Ireland

Longitude Licensing Limited

USPTO Granted Patents = 46

% Expired Patents = 2.2

EPO Patents = 4

Forward Citations = 53

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27 inventors (with patents filed for the assignee):

Chikara Kondo (12 out of 79 patents)

Ryohei Kitada (4 out of 5 patents)

Masahiro Yamaguchi (4 out of 38 patents)

4. Yoshinori Matsui (3 out of 87 patents)

5. Yoshiro Riho (3 out of 49 patents)

6. Akihiko Hatasawa (3 out of 6 patents)

7. Daisuke Tsuji (2 out of 4 patents)

8. Shunsuke Asanao (2 out of 2 patents)

9. Michio Inoue (2 out of 7 patents)

10. Yorio Takada (2 out of 14 patents)

11. Sensho Usami (2 out of 3 patents)

12. Yoshinori Ikebuchi (2 out of 5 patents)

13. Atsuo Koshizuka (2 out of 34 patents)

14. Yoshitaka Nakamura (1 out of 73 patents)

15. Naohisa Nishioka (1 out of 30 patents)

Core Competencies:

Semiconductor Device

Through Silicon Vias

Memory System

Data Transmission

Signal Verification

PDA Function

Chip Selection

Transistor Gate Structures

Impedance Calibration

Stacked Semiconductor

Manufacturing Method

Data Processing System

46 patents: Sort by Forward Citations

1. RE50887 - Testing circuitry in a stacked semiconductor device using through silicon vias (2026-05-12),

2. 12380942 - Semiconductor device verifying signal supplied from outside (2025-08-05),

3. 12374385 - Semiconductor device having PDA function (2025-07-29),

4. 11948623 - Semiconductor device having PDA function (2024-04-02),

5. 11922994 - Semiconductor device verifying signal supplied from outside (2024-03-05),

6. 11817427 - Semiconductor device having through silicon vias and manufacturing method thereof (2023-11-14),

7. RE49390 - Testing a circuit in a semiconductor device (2023-01-23),

8. 11417392 - Semiconductor device having PDA function (2022-08-16),

9. 11410712 - Memory system and data transmission method (2022-08-09),

10. 11398269 - Semiconductor device verifying signal supplied from outside (2022-07-26),

11. 11211363 - Semiconductor device having through silicon vias and manufacturing method thereof (2021-12-28),

12. 11195819 - Semiconductor device (2021-12-07),

13. 11049845 - Semiconductor device having wires connecting connection pads (2021-06-29),

14. 11049809 - Semiconductor device having a reduced pitch between lead-out wirings (2021-06-29),

15. 11011471 - Semiconductor device (2021-05-18),

Company Overview

Longitude Licensing Limited, based in Dublin, Ireland, specializes in advanced semiconductor technologies. The company focuses on the development and licensing of innovative solutions in memory systems, data transmission methods, and semiconductor device architectures. Their expertise encompasses critical areas such as through silicon vias, impedance calibration, and transistor gate structures, which are essential for enhancing chip performance and efficiency. Longitude Licensing is committed to driving advancements in the semiconductor industry through its cutting-edge research and technology initiatives.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

46 Patents

#42 in Dublin

#68 in Ireland

#15,122 in the World

Dublin, Ireland

Longitude Licensing Limited

Forward Citations = 53

27 inventors:

Chikara Kondo (12 out of 79 patents)

Ryohei Kitada (4 out of 5 patents)

Masahiro Yamaguchi (4 out of 38 patents)

4. Yoshinori Matsui (3 out of 87 patents)

5. Yoshiro Riho (3 out of 49 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Longitude Licensing Limited. Retrieved from https://idiyas.com/company/longitude-licensing

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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