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Ozen Corporation

USPTO Granted Patents = 44

Trademarks = 1

Forward Citations = 171

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12 inventors (with patents filed for the assignee):

Eishi Koike (32 out of 34 patents)

Katsumi Watanabe (5 out of 21 patents)

Masumi Kaneko (3 out of 3 patents)

4. Yasuhiko Yusa (2 out of 2 patents)

5. Seiji Ohata (2 out of 2 patents)

6. Yasushi Ohtani (2 out of 2 patents)

7. Bungo Hasegawa (2 out of 2 patents)

8. Yutaka Shiseki (1 out of 4 patents)

9. Daniel Hager (1 out of 1 patent)

10. Eishi Koiki (1 out of 1 patent)

11. Kazumi Nozawa (1 out of 2 patents)

12. Katsumi Watanabe, Deceased (1 out of 1 patent)

Core Competencies:

Sound Reproducing Device

Compact Record Player

Acoustic Playback Apparatus

Phonograph Technology

Toy Sound Generating Device

Electric Motor Driven Phonograph

Spring Driven Phonograph

Injection Moulding of Plastic Parts

Voice Generating Device

Record Disc Replacing Mechanism

Simplified Sound Playback

Continuous Repeating Sound Device

44 patents: Sort by Forward Citations

1. 5247511 - Compact sound record playing apparatus (1993-09-21),

2. 5195919 - Panel piece combination toy (1993-03-23),

3. 5177733 - Sound recording playing apparatus with improved vibration plate (1993-01-05),

4. 5164927 - Compact record player having downwardly extending notched rib and (1992-11-17),

5. 5138602 - Sound record playing apparatus having shock responsive weight member to (1992-08-11),

6. 5103442 - Simplified acoustic playback apparatus (1992-04-07),

7. 5054012 - Sound reproducing device for playing a record disc having a plurality of (1991-10-01),

8. 4876678 - Sound reproducing device for playing a record disc having a plurality of (1989-10-24),

9. 4862444 - Index carrier for indexing and reproducing a plurality of record discs (1989-08-29),

10. 4827465 - Simplified sound reproducing device having a means for preventing (1989-05-02),

11. 4823332 - Simplified sound reproducing device capable of reproducing a plurality (1989-04-18),

12. 4811322 - Phonograph for a record disk having a plurality of sound grooves (1989-03-07),

13. 4801880 - Device for measuring the speed of a moving object (1989-01-31),

14. 4800305 - Pull string mechanism in a pull string type sound reproducing device (1989-01-24),

15. 4757491 - Sound generating toy (1988-07-12),

Ozen Corporation is a leading provider of innovative technology solutions, specializing in software development and consulting services. With a global presence, we cater to a wide range of industries including finance, healthcare, logistics, and retail. Our team of highly skilled professionals is committed to delivering cutting-edge solutions that align with our clients' business objectives. Visit our website to explore our expertise and discover how we can help your business thrive.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

44 Patents

#1 in Machida

#1,826 in Japan

#15,304 in the World

Ozen Corporation

Forward Citations = 171

12 inventors:

Eishi Koike (32 out of 34 patents)

Katsumi Watanabe (5 out of 21 patents)

Masumi Kaneko (3 out of 3 patents)

4. Yasuhiko Yusa (2 out of 2 patents)

5. Seiji Ohata (2 out of 2 patents)

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