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For the Inventor, By the Inventor

JP

Zama Japan


USPTO Granted Patents = 23

% Expired Patents = 4.3

Forward Citations = 131

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7 inventors (with patents filed for the assignee):

goldMedal Takumi Nonaka (11 out of 37 patents)

silverMedal Scott R Shaw (5 out of 14 patents)

bronzeMedal Satoru Araki (3 out of 17 patents)

4.  Mamoru Toda (3 out of 10 patents)

5.  Richard L Morris (1 out of 2 patents)

6.  Yuzuru Yanaka (1 out of 5 patents)

7.  Kimio Koizumi (1 out of 10 patents)


23 patents:

1. 7278629 - Carburetor (2007-10-09),
2. 7185623 - Carburetor start pump circuit (2007-03-06),
3. 7144230 - Pulse fuel pump for a diaphragm carburetor (2006-12-05),
4. 7017535 - Carburetor for two-stroke engine (2006-03-28),
5. 6983928 - Acceleration apparatus for carburetor (2006-01-10),
6. 6957633 - Carburetor for two-cycle engine (2005-10-25),
7. 6932322 - Valve body of an on-off valve and a method for manufacturing the same (2005-08-23),
8. 6880812 - Carburetor (2005-04-19),
9. 6860254 - Carburetor (2005-03-01),
10. 6845972 - Fuel system of carburetor (2005-01-25),
11. 6843469 - Scavenging air/fuel-air mixture control device for a stratified scavenging two-cycle engine (2005-01-18),
12. 6827338 - Scavenging air/fuel-air mixture control device for a stratified scavenging two-cycle engine (2004-12-07),
13. 6799545 - Carburetor start pump circuit (2004-10-05),
14. 6755397 - Diaphragm-type carburetor (2004-06-29),
15. 6702262 - Fuel system of carburetor (2004-03-09),
Company Overview
Zama Japan specializes in the development and manufacturing of advanced fuel injection systems for small engines, particularly in the outdoor power equipment sector. The company focuses on optimizing engine performance and efficiency through innovative technologies, catering to a global market. With a commitment to research and development, Zama aims to enhance the functionality and environmental sustainability of its products, positioning itself as a key player in the automotive and small engine industries.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

23 Patents

#32 in

#2,705 in Japan

#27,685 in the World

JP
JP

Zama Japan

Forward Citations = 131

7 inventors:

goldMedal Takumi Nonaka (11 out of 37 patents)

silverMedal Scott R Shaw (5 out of 14 patents)

bronzeMedal Satoru Araki (3 out of 17 patents)

4.  Mamoru Toda (3 out of 10 patents)

5.  Richard L Morris (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Zama Japan. Retrieved from https://idiyas.com/company/zama-japan

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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