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Osakashi, Japan

Nippon Pneumatic Manufacturing Co., Ltd.

USPTO Granted Patents = 23

EPO Patents = 1

Forward Citations = 229

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37 inventors (with patents filed for the assignee):

Hiroshi Okada (6 out of 7 patents)

Masaaki Hiraoka (4 out of 4 patents)

Hiromu Terada (3 out of 3 patents)

4. Tsutomu Aoki (3 out of 14 patents)

5. Fukuo Wakano (2 out of 2 patents)

6. Sehiro Kimura (1 out of 1 patent)

7. Tomoki Uchida (1 out of 1 patent)

8. Nozomu Oda (1 out of 1 patent)

9. Hiroshi Morimoto (1 out of 1 patent)

10. Takashi Okumura (1 out of 1 patent)

11. Yoshifumi Itoh (1 out of 1 patent)

12. Takanobu Yamanaka (1 out of 1 patent)

13. Kozo Najima (1 out of 1 patent)

14. Masahiro Ida (1 out of 1 patent)

15. Hirohumi Tsuyuguchi (1 out of 1 patent)

23 patents: Sort by Forward Citations

1. 7237738 - Demolishing and cutting machine (2007-07-03),

2. 6269955 - Air current classifying separator (2001-08-07),

3. 6015108 - Crusher (2000-01-18),

4. 5664734 - Crusher apparatus (1997-09-09),

5. 5621962 - Method of manufacturing chisel for impact tool (1997-04-22),

6. 5285858 - Device for supporting impact tool (1994-02-15),

7. 5271301 - Vibrating cutting tool (1993-12-21),

8. 5143493 - Vibrating cutting tool (1992-09-01),

9. D326857 - Vibrating pile driver (1992-06-09),

10. D324159 - Portable cut saw (1992-02-25),

11. D323170 - Crusher for use with a power shovel (1992-01-14),

12. D323169 - Crusher for use with a power shovel (1992-01-14),

13. 4945998 - Hydraulic impact tool (1990-08-07),

14. 4852664 - Hydraulic impact tool (1989-08-01),

15. 4838133 - Hydraulic pulse wrench (1989-06-13),

Nippon Pneumatic Manufacturing Co., Ltd. is a leading manufacturer of construction equipment, specializing in hydraulic attachments for excavators. With over 100 years of experience, NPK has become a trusted name in the industry, known for their high-quality products and innovative solutions. Their wide range of products includes hydraulic hammers, crushers, compactors, and more, designed to meet the needs of construction, demolition, mining, and other industries. NPK is committed to providing reliable and efficient equipment to help their customers get the job done safely and efficiently.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

23 Patents

#9 in Osakashi

#2,644 in Japan

#26,790 in the World

Osakashi, Japan

Nippon Pneumatic Manufacturing Co., Ltd.

Forward Citations = 229

37 inventors:

Hiroshi Okada (6 out of 7 patents)

Masaaki Hiraoka (4 out of 4 patents)

Hiromu Terada (3 out of 3 patents)

4. Tsutomu Aoki (3 out of 14 patents)

5. Fukuo Wakano (2 out of 2 patents)

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