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For the Inventor, By the Inventor

Tokyo, Japan

Nippon Yusen Kaisha

Calculating rank
USPTO Granted Patents = 6

Forward Citations = 135

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19 inventors (with patents filed for the assignee):

goldMedal Hideo Yamada (2 out of 24 patents)

silverMedal Ichiro Ueda (2 out of 2 patents)

bronzeMedal Susumu Tsunoda (2 out of 4 patents)

4.  Kunio Nakajima (2 out of 2 patents)

5.  Kenji Kadokura (2 out of 2 patents)

6.  Susumu Uchida (2 out of 2 patents)

7.  Hisamoto Naniwa (2 out of 2 patents)

8.  Shigemi Ichiki (2 out of 2 patents)

9.  Akihiko Sakai (1 out of 1 patent)

10.  Yuichi Takahashi (1 out of 1 patent)

11.  Seijiro Aoki (1 out of 1 patent)

12.  Masanori Ishizuka (1 out of 1 patent)

13.  Kinya Niizeki (1 out of 2 patents)

14.  Kenyo Matsushita (1 out of 4 patents)

15.  Keiichi Akashi (1 out of 1 patent)


6 patents:

1. 5610344 - Environmental test apparatus (1997-03-11),
2. 5423977 - Rotary filter with automatic spray cleaning device for cleaning same (1995-06-13),
3. 5346035 - Fork lift truck with rotatable seat and operator controls (1994-09-13),
4. 4784287 - Bulkhead device for use in container liner bags (1988-11-15),
5. 4744225 - Containers for transporting perishable foods (1988-05-17),
6. 4674127 - Liner bag for use in containers (1987-06-16),
Company Overview
Nippon Yusen Kaisha (NYK) is one of the world's largest shipping companies, offering a wide range of logistics services including container shipping, bulk shipping, and cruise line operations. With a history dating back to 1885, NYK has a strong global presence and a reputation for reliability and innovation in the maritime industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

6 Patents

#2,469 in Tokyo

#5,990 in Japan

Tokyo, JP
Tokyo, Japan

Nippon Yusen Kaisha

Forward Citations = 135

19 inventors:

goldMedal Hideo Yamada (2 out of 24 patents)

silverMedal Ichiro Ueda (2 out of 2 patents)

bronzeMedal Susumu Tsunoda (2 out of 4 patents)

4.  Kunio Nakajima (2 out of 2 patents)

5.  Kenji Kadokura (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Yusen Kaisha. Retrieved from https://idiyas.com/company/nippon-yusen-kaisha

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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