logo

For the Inventor, By the Inventor

Tokyo, Japan

Maruyama Mfg. Co., Ltd.


USPTO Granted Patents = 65

% Expired Patents = 10.8


Trademarks = 1

Forward Citations = 623

Loading Chart...
Loading Chart...

43 inventors (with patents filed for the assignee):

goldMedal Katsumi Kiyooka (11 out of 11 patents)

silverMedal Toshihisa Nemoto (10 out of 12 patents)

bronzeMedal Terutaka Yasuda (10 out of 11 patents)

4.  Junichi Miyamoto (9 out of 10 patents)

5.  Kaori Katoh (8 out of 8 patents)

6.  Nobuo Tojo (6 out of 9 patents)

7.  Kazuhiro Yoshida (4 out of 4 patents)

8.  Yoichi Ishikawa (3 out of 16 patents)

9.  Toshiaki Ohnishi (3 out of 3 patents)

10.  Masaya Hashimoto (3 out of 3 patents)

11.  Shinji Ohwaku (3 out of 3 patents)

12.  Toshiro Nakanishi (2 out of 2 patents)

13.  Keiichi Moriya (2 out of 5 patents)

14.  Kouichi Shinotsuka (2 out of 2 patents)

15.  Kousuke Kawaguchi (2 out of 2 patents)


Core Competencies:
Reciprocating Pump
Internal Combustion Engine
Power Sprayer
Two-Stroke Engine
Blower
Chemical Sprayer
Backpack Blower
Centrifugal Blower
Choke Valve
Diaphragm Pump
Irrigation Apparatus
Exhaust Silencer

65 patents:

1. D1142499 - FUEL PUMP (2026-08-18),
2. D1132972 - Body cover for lawn mower (2026-07-07),
3. 12429020 - Two-stroke engine with crankcase fuel injector (2025-09-30),
4. D1076011 - Power sprayer (2025-05-20),
5. 12276272 - Diaphragm pump (2025-04-14),
6. 12247665 - Seal structure with annular packing (2025-03-11),
7. D1009078 - Internal combustion engine (2023-12-26),
8. 10480427 - Choke valve structure (2019-11-19),
9. D858582 - Reciprocating pump (2019-09-03),
10. 10190534 - Two-cycle engine (2019-01-29),
11. 10119538 - Reciprocating pump (2018-11-06),
12. 10085390 - Backpack type blowing apparatus (2018-10-02),
13. D815377 - Blower nozzle attachment (2018-04-10),
14. 9932973 - Reciprocating pump with high-pressure seal (2018-04-03),
15. D806330 - Backpack blower (2017-12-26),
Company Overview
Maruyama Mfg. Co., Ltd., based in Tokyo, specializes in the development and manufacturing of reciprocating pumps and related equipment. The company focuses on innovative solutions in various sectors, including agriculture and industrial applications, with a strong emphasis on internal combustion engines and power sprayers. Their product lineup includes two-stroke engines, blowers, chemical sprayers, and backpack blowers, showcasing their commitment to quality and performance in fluid handling technology.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

65 Patents

#696 in Tokyo

#1,472 in Japan

#11,344 in the World

Tokyo, JP
Tokyo, Japan

Maruyama Mfg. Co., Ltd.

Forward Citations = 623

43 inventors:

goldMedal Katsumi Kiyooka (11 out of 11 patents)

silverMedal Toshihisa Nemoto (10 out of 12 patents)

bronzeMedal Terutaka Yasuda (10 out of 11 patents)

4.  Junichi Miyamoto (9 out of 10 patents)

5.  Kaori Katoh (8 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Maruyama Mfg. Co., Ltd.. Retrieved from https://idiyas.com/company/maruyama-mfg-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]
Loading…