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Luxembourg, Luxembourg

Longitude Semiconductor S.a.r.l.

Calculating rank

USPTO Granted Patents = 52

% Expired Patents = 13.5

EPO Patents = 1

Forward Citations = 119

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65 inventors (with patents filed for the assignee):

Chikara Kondo (5 out of 79 patents)

Yoshinori Matsui (4 out of 87 patents)

Yorio Takada (4 out of 14 patents)

4. Michio Inoue (3 out of 7 patents)

5. Toshio Sugano (3 out of 58 patents)

6. Hiroki Fujisawa (2 out of 153 patents)

7. Akira Ide (2 out of 43 patents)

8. Kazuaki Tonari (2 out of 4 patents)

9. Hiroaki Ikeda (2 out of 3 patents)

10. Yutaka Uematsu (1 out of 88 patents)

11. Yoshitaka Nakamura (1 out of 73 patents)

12. Naohisa Nishioka (1 out of 30 patents)

13. Kiyonori Oyu (1 out of 39 patents)

14. Ryohei Kitada (1 out of 5 patents)

15. Masahiro Yamaguchi (1 out of 38 patents)

Core Competencies:

Memory Module

PDA Function

Chip Selection

Manufacturing Method

Silicon Interposer

Floating Body Transistor

Hierarchical Amplifiers

Stacked Chips

Impedance Calibration

Output Circuit

Data Processing System

Dummy Patterns

52 patents: Sort by Forward Citations

1. 10147479 - Memory module and memory system (2018-12-04),

2. 10068637 - Semiconductor device having PDA function (2018-09-04),

3. 10037971 - Semiconductor device having plural memory chip (2018-07-31),

4. 9990982 - Memory module and memory system (2018-06-05),

5. RE46882 - Semiconductor device and method for manufacturing the same (2018-05-28),

6. RE46798 - Semiconductor device and manufacturing method therefor (2018-04-16),

7. 9911699 - Semiconductor device (2018-03-06),

8. 9911480 - Semiconductor device chip selection (2018-03-06),

9. 9786762 - Gate electrode of a semiconductor device, and method for producing same (2017-10-10),

10. 9766646 - Constant current source circuit (2017-09-19),

11. 9715921 - Semiconductor device having PDA function (2017-07-25),

12. 9691700 - Semiconductor device including first and second dummy wirings (2017-06-27),

13. 9666306 - Semiconductor device having hierarchically structured bit lines (2017-05-30),

14. 9641175 - Output circuit for semiconductor device, semiconductor device having output circuit, and method of adjusting characteristics of output circuit (2017-05-02),

15. 9640462 - Semiconductor device having wiring pad and wiring formed on the same wiring layer (2017-05-02),

Company Overview

Longitude Semiconductor S.a.r.l., based in Luxembourg, specializes in the development and manufacturing of advanced semiconductor devices. The company focuses on innovative technologies such as memory modules, chip selection, and manufacturing methods that enhance performance and efficiency in electronic applications. Their expertise extends to cutting-edge areas including floating body transistors, hierarchical amplifiers, and silicon interposers, positioning them as a key player in the semiconductor industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

52 Patents

#28 in Luxembourg

#33 in Luxembourg

#13,581 in the World

Luxembourg, Luxembourg

Longitude Semiconductor S.a.r.l.

Forward Citations = 119

65 inventors:

Chikara Kondo (5 out of 79 patents)

Yoshinori Matsui (4 out of 87 patents)

Yorio Takada (4 out of 14 patents)

4. Michio Inoue (3 out of 7 patents)

5. Toshio Sugano (3 out of 58 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Longitude Semiconductor S.a.r.l.. Retrieved from https://idiyas.com/company/longitude-semiconductor-s-a-r-l

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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