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Aiwa Co., Ltd.

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USPTO Granted Patents = 55

Trademarks = 1

Forward Citations = 686

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65 inventors (with patents filed for the assignee):

Stephen G Jordan (5 out of 6 patents)

Haruo Saito (4 out of 4 patents)

Satoshi Ishii (4 out of 4 patents)

4. Arun Malhotra (3 out of 18 patents)

5. Akira Ootake (3 out of 3 patents)

6. Teru Saitou (3 out of 3 patents)

7. Naofumi Adachi (3 out of 3 patents)

8. Yoshihito Takeshima (3 out of 3 patents)

9. Ryouji Terada (3 out of 3 patents)

10. Takumi Usui (3 out of 3 patents)

11. Takao Mogi (3 out of 3 patents)

12. Hiroyuki Hashimoto (3 out of 3 patents)

13. Morio Nakayama (3 out of 3 patents)

14. Kuniaki Edo (3 out of 3 patents)

15. Hiroyuki Watanabe (2 out of 67 patents)

Core Competencies:

Magnetic Storage

Data Recording

Optical Pickup

Chemical-Mechanical Etching

Audio Reproducing

Thin Film Magnetic Head

Portable Terminal Equipment

Video Camera

Signal Processing

Loudspeaker Unit

Mini-Disk Player

Soldering Method

55 patents: Sort by Forward Citations

1. 6633443 - Peak shift correction circuit and magnetic storage medium playback apparatus (2003-10-14),

2. 6631111 - Recording and reproducing apparatus provided with teletext recording capability (2003-10-07),

3. 6562251 - Chemical-mechanical contouring (CMC) method for forming a contoured surface using a stair-step etch (2003-05-13),

4. 6549508 - Turntable and disk driving device (2003-04-15),

5. 6529449 - Magneto-optical head involving solid immersion lens with two-layer heat-dispersive coil (2003-03-04),

6. 6442121 - Optical pickup dust-proofing structure (2002-08-27),

7. 6430701 - Data recording and reproducing method and apparatus using plurality of data recording and reproducing units, and computer-readable recording medium (2002-08-06),

8. 6417989 - Multiple-gap magnetic thin-film head with improved read/write coil arrangement (2002-07-09),

9. 6417109 - Chemical-mechanical etch (CME) method for patterned etching of a substrate surface (2002-07-09),

10. 6411808 - Portable terminal equipment (2002-06-25),

11. 6341108 - Audio reproducing device (2002-01-22),

12. 6324397 - Portable terminal equipment (2001-11-27),

13. 6236869 - Portable terminal equipment (2001-05-22),

14. 6227477 - Data storage cassette and data recording and reproducing device (2001-05-08),

15. 6172834 - System and method for adjusting the speed of tape (2001-01-09),

Company Overview

Aiwa Co., Ltd., headquartered in Tokyo, Japan, specializes in data storage technology, focusing on innovative solutions for magnetic storage and data recording. The company is recognized for its advancements in optical pickup systems and chemical-mechanical etching processes, which enhance the efficiency and reliability of data storage devices. Aiwa also develops audio reproducing technologies and thin film magnetic heads, catering to a diverse range of portable terminal equipment and video cameras, thereby contributing to the evolution of multimedia technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

55 Patents

#763 in Tokyo

#1,620 in Japan

#12,932 in the World

Aiwa Co., Ltd.

Forward Citations = 686

65 inventors:

Stephen G Jordan (5 out of 6 patents)

Haruo Saito (4 out of 4 patents)

Satoshi Ishii (4 out of 4 patents)

4. Arun Malhotra (3 out of 18 patents)

5. Akira Ootake (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aiwa Co., Ltd.. Retrieved from https://idiyas.com/company/aiwa-company

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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