Forward Citations = 16

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10 inventors (with patents filed for the assignee):

Kazuo Kondo (1 out of 44 patents)

Hisaharu Shiromizu (1 out of 5 patents)

Senichi Masuda (1 out of 34 patents)

4. Hideyuki Kawase (1 out of 1 patent)

5. Noboru Sahashi (1 out of 1 patent)

6. Tamotsu Hashizume (1 out of 1 patent)

7. Yasuhiko Suzuki (1 out of 15 patents)

8. Isamu Fukuura (1 out of 8 patents)

9. Naotoshi Morita (1 out of 1 patent)

10. Tatsunori Kurachi (1 out of 4 patents)

4 patents: Sort by Forward Citations

1. 5006143 - Method of producing a joined article through bonding with low melting (1991-04-09),

2. 4861625 - Method of manufacturing a thermal printing head having a (1989-08-29),

3. 4844029 - Heater for starting engine (1989-07-04),

4. 4672503 - Electric field forming apparatus (1987-06-09),

Company Overview

Ngb Spark Plug Co., Ltd. is a leading manufacturer of spark plugs for automotive and industrial applications. With a focus on innovation and quality, Ngb Spark Plug Co., Ltd. provides high performance spark plugs that are trusted by customers worldwide. Established in 2005, the company has a strong reputation for reliability and excellence in the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#172 in Aichi

#7,588 in Japan

Aichi, Japan

Ngb Spark Plug Co., Ltd.

Forward Citations = 16

10 inventors:

Kazuo Kondo (1 out of 44 patents)

Hisaharu Shiromizu (1 out of 5 patents)

Senichi Masuda (1 out of 34 patents)

4. Hideyuki Kawase (1 out of 1 patent)

5. Noboru Sahashi (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ngb Spark Plug Co., Ltd.. Retrieved from https://idiyas.com/company/ngb-spark-plug-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]