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Forward Citations = 23

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15 inventors (with patents filed for the assignee):

Kazuo Kondo (1 out of 44 patents)

Kenji Ito (1 out of 88 patents)

Takio Kojima (1 out of 25 patents)

4. Tadashi Shingaki (1 out of 5 patents)

5. Junichi Ichikawa (1 out of 3 patents)

6. Takashi Oba (1 out of 4 patents)

7. Hisashi Koduka (1 out of 1 patent)

8. Kazuhisa Itakura (1 out of 7 patents)

9. Norihisa Kitajima (1 out of 1 patent)

10. Naomasa Wakita (1 out of 11 patents)

11. Asao Morikawa (1 out of 19 patents)

12. Mitsuyoshi Kawamura (1 out of 19 patents)

13. Shigeaki Akao (1 out of 7 patents)

14. Hisashi Ito (1 out of 1 patent)

15. Hidetoshi Baba (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 7094720 - Dielectric ceramic composition and dielectric resonator made from the composition (2006-08-22),

2. 6831530 - Monolithic LC filter with enhanced magnetic coupling between resonator inductors (2004-12-14),

3. 5122768 - Compact stripline filter with fixed capacity between coupled resonator (1992-06-16),

4. 5003131 - Connection structure between ceramic body and outer terminal (1991-03-26),

5. 4785720 - Lubrication mechanism for piston pin and snap ring (1988-11-22),

6. 4777155 - Sintered member of aluminum nitride base reinforced composite material (1988-10-11),

NKG Spark Plug Co., Ltd. is a leading manufacturer of spark plugs and related products. The company has been producing high-quality spark plugs for automotive, motorbike, and other applications for over 80 years. NKG Spark Plug Co., Ltd. has a strong reputation for innovation, reliability, and performance in the industry.

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Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

6 Patents

#75 in Nagoya

#5,843 in Japan

Nagoya, Japan

Nkg Spark Plug Co., Ltd.