CIPO Patents = 1

Trademarks = 3

Forward Citations = 31

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11 inventors (with patents filed for the assignee):

Masahiro Abukawa (3 out of 24 patents)

Masaaki Ase (2 out of 2 patents)

Kouju Hongo (1 out of 1 patent)

4. Jutaro Nagaishi (1 out of 1 patent)

5. Hironori Hamada (1 out of 1 patent)

6. Tetsuo Otsuka (1 out of 1 patent)

7. Tooru Shiraiwa (1 out of 1 patent)

8. Tooru Yagi (1 out of 1 patent)

9. Alfred A Yee (1 out of 8 patents)

10. Toru Hirokawa (1 out of 1 patent)

11. Ichiro Kano (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 8826627 - Joint method for reinforcing bar (2014-09-09),

2. 8080104 - Filling material for reinforcing joint and construction method of filling reinforcing joint (2011-12-20),

3. 7143991 - Reinforcing bar joint sleeve fixing device (2006-12-05),

4. 6851245 - Mortar-filled type reinforcing bar joint (2005-02-08),

5. 5392582 - Mortar grouting type connector for reinforcing bars (1995-02-28),

6. 5230199 - Splice sleeve for connecting reinforcing bars to another entity (1993-07-27),

7. 4749170 - Method of arranging a splice sleeve to receive reinforcing bars (1988-06-07),

Company Overview

Splice Sleeve Japan, Ltd. is a leading manufacturer and distributor of high-quality splice sleeves and related products for the telecommunications industry. With a focus on innovation and quality, we provide reliable solutions for splicing optical fibers with our range of products. Our commitment to customer satisfaction and continuous improvement drives our success in the market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#2,288 in Tokyo

#5,459 in Japan

Tokyo, Japan

Splice Sleeve Japan, Ltd.

Forward Citations = 31

11 inventors:

Masahiro Abukawa (3 out of 24 patents)

Masaaki Ase (2 out of 2 patents)

Kouju Hongo (1 out of 1 patent)

4. Jutaro Nagaishi (1 out of 1 patent)

5. Hironori Hamada (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Splice Sleeve Japan, Ltd.. Retrieved from https://idiyas.com/company/splice-sleeve-japan

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]

1 patent (CIPO):

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]