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Calsonic Corporation

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USPTO Granted Patents = 126

Forward Citations = 1,450

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202 inventors (with patents filed for the assignee):

Hiroyuki Inaba (10 out of 17 patents)

Makoto Tajima (9 out of 15 patents)

Hideki Sunaga (8 out of 29 patents)

4. Masatoshi Suto (8 out of 8 patents)

5. Eizo Suyama (7 out of 12 patents)

6. Toshio Ohashi (5 out of 15 patents)

7. Shinji Araki (5 out of 9 patents)

8. Kaoru Kamiyama (5 out of 7 patents)

9. Michito Saito (5 out of 7 patents)

10. Kei Beppu (5 out of 6 patents)

11. Hideo Kobayashi (4 out of 205 patents)

12. Katsumi Nakamura (4 out of 88 patents)

13. Yoichi Takahashi (4 out of 17 patents)

14. Hiroyasu Koizumi (4 out of 20 patents)

15. Yukio Umemura (4 out of 8 patents)

Core Competencies:

Swash Plate Compressor

Heat Exchanger

Electronic Climate Control

Automotive Air Conditioning

Pressure Control Valve

Flexible Tube

Oil Cooler

Centrifugal Multiblade Fan

Evaporator Expansion Valve

Vehicle Air Conditioner

Exhaust System

Catalytic Converter

126 patents: Sort by Forward Citations

1. 6332553 - String-attached cap (2001-12-25),

2. 6283361 - General-purpose jig (2001-09-04),

3. 6266858 - Apparatus for manufacturing a header pipe (2001-07-31),

4. 6196258 - Pressure control valve and evaporation fuel discharge control device (2001-03-06),

5. 6167953 - Heat exchanger tank (2001-01-02),

6. 6158325 - Swash plate type variable displacement compressor (2000-12-12),

7. 6151893 - Flexible tube for automobile exhaust systems (2000-11-28),

8. 6146110 - Swash plate type compressor (2000-11-14),

9. 6125643 - Heat pump type air conditioning system for automotive vehicle (2000-10-03),

10. 6120259 - Swash plate type compressor (2000-09-19),

11. 6109085 - Forming apparatus using a pair of rollers (2000-08-29),

12. 6105666 - Vehicular air conditioning apparatus (2000-08-22),

13. 6097311 - Warning device for distance between cars (2000-08-01),

14. 6095030 - Swash plate variable displacement compressor (2000-08-01),

15. 6082449 - Oil cooler structure (2000-07-04),

Company Overview

Calsonic Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced automotive air conditioning systems. The company focuses on key technologies such as swash plate compressors, heat exchangers, and electronic climate control systems, contributing to enhanced vehicle comfort and efficiency. Calsonic's expertise extends to pressure control valves, flexible tubes, oil coolers, and centrifugal multiblade fans, positioning it as a significant player in the automotive engineering sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

126 Patents

#484 in Tokyo

#982 in Japan

#6,373 in the World

Calsonic Corporation

Forward Citations = 1,450

202 inventors:

Hiroyuki Inaba (10 out of 17 patents)

Makoto Tajima (9 out of 15 patents)

Hideki Sunaga (8 out of 29 patents)

4. Masatoshi Suto (8 out of 8 patents)

5. Eizo Suyama (7 out of 12 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Calsonic Corporation. Retrieved from https://idiyas.com/company/calsonic

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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