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For the Inventor, By the Inventor

Komatsu, Japan

Komatsu Machinery Corporation Ltd.

Calculating rank
USPTO Granted Patents = 16

% Expired Patents = 18.8

Forward Citations = 53

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8 inventors (with patents filed for the assignee):

goldMedal Masumi Shimomura (10 out of 14 patents)

silverMedal Masahiro Shoji (4 out of 5 patents)

bronzeMedal Akihiro Yoshimoto (1 out of 5 patents)

4.  Takeshi Suzuki (1 out of 2 patents)

5.  Makoto Yamamoto (1 out of 2 patents)

6.  Tadashi Kumazawa (1 out of 1 patent)

7.  Akira Ikoma (1 out of 1 patent)

8.  Susumu Nakamura (1 out of 1 patent)


16 patents:

1. 8215883 - Method for machining crankshaft, apparatus for machining crankshaft, control apparatus and program (2012-07-10),
2. 7499813 - Device and method for inspecting for flaw on surface of work (2009-03-03),
3. 7424776 - Method for machining a workpiece (2008-09-16),
4. 6973861 - Lathe-cutting apparatus for crankshaft and lathe-cutting method thereof (2005-12-13),
5. 6536312 - Compound machining center compound machining method and machining tool (2003-03-25),
6. 6230379 - Combined machining apparatus for making piston rings (2001-05-15),
7. 6203477 - Cutter changing systems and methods for internal crankshaft miller (2001-03-20),
8. 6161991 - Method of machining crankshaft (2000-12-19),
9. 6149502 - Crankshaft machining method (2000-11-21),
10. 6134763 - Combined machining apparatus for making piston rings (2000-10-24),
11. 6098258 - Combined machining apparatus and machining method by using the same (2000-08-08),
12. 6062117 - Machining apparatus for works having non-circular curves (2000-05-16),
13. 6045307 - Camshaft shaping machine (2000-04-04),
14. 5980171 - Method and apparatus for milling crankshafts (1999-11-09),
15. 5919008 - Milling cutter (1999-07-06),
Company Overview
Komatsu Machinery Corporation Ltd. is a leading global manufacturer of construction and mining equipment, known for its innovative machinery and technology solutions. The company specializes in developing advanced equipment that enhances productivity and efficiency in various sectors, including earthmoving, material handling, and mining operations. Headquartered in Komatsu, Japan, the organization is committed to sustainability and incorporates cutting-edge technology to improve operational performance and reduce environmental impact.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

16 Patents

#1 in Komatsu

#3,345 in Japan

#37,887 in the World

Komatsu, JP
Komatsu, Japan

Komatsu Machinery Corporation Ltd.

Forward Citations = 53

8 inventors:

goldMedal Masumi Shimomura (10 out of 14 patents)

silverMedal Masahiro Shoji (4 out of 5 patents)

bronzeMedal Akihiro Yoshimoto (1 out of 5 patents)

4.  Takeshi Suzuki (1 out of 2 patents)

5.  Makoto Yamamoto (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Komatsu Machinery Corporation Ltd.. Retrieved from https://idiyas.com/company/komatsu-machinery

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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