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For the Inventor, By the Inventor

Tokyo, Japan

Schaft Inc.

Calculating rank
USPTO Granted Patents = 14

% Expired Patents = 71.4


Forward Citations = 49

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10 inventors (with patents filed for the assignee):

goldMedal Junichi Urata (12 out of 22 patents)

silverMedal Yoshito Ito (3 out of 13 patents)

bronzeMedal Koichi Nishiwaki (2 out of 4 patents)

4.  Masaki Hamafuji (2 out of 5 patents)

5.  Nobuyuki Ito (2 out of 29 patents)

6.  Masayuki Inaba (2 out of 2 patents)

7.  Satoshi Kagami (1 out of 9 patents)

8.  Akihiko Sasaki (1 out of 1 patent)

9.  Shuntaro Yamazaki (1 out of 28 patents)

10.  Yuto Nakanishi (1 out of 2 patents)

11.  Jyunichi Urata (0 patent)


14 patents:

1. 10199904 - Cooling a heat-generating electronic device (2019-02-05),
2. 10196104 - Terrain Evaluation for robot locomotion (2019-02-05),
3. 10179619 - Robotic foot sensor (2019-01-15),
4. 10160505 - Variable-compliance, slip-resistant foot for legged mechanisms (2018-12-25),
5. 10132701 - Rotary driver (2018-11-20),
6. 10006989 - Disabling robot sensors (2018-06-26),
7. 10000248 - Rotatable robot foot with perpendicular soles (2018-06-19),
8. 9994269 - Rotatable extension for robot foot (2018-06-12),
9. 9950430 - Encoder update by using regenerative power (2018-04-24),
10. 9882523 - Motor drive voltage control device and method for controlling motor drive voltage (2018-01-30),
11. 9821866 - Rotatable robot foot with perpendicular soles (2017-11-21),
12. 9768662 - Water-cooled motor structure and water-cooled housing (2017-09-19),
13. 9733137 - Rotational drive device (2017-08-15),
14. 9503013 - Motor drive voltage control device and method for controlling motor drive voltage (2016-11-22),
Company Overview
Schaft Inc. is a robotics company based in Tokyo, Japan, specializing in the development of advanced humanoid robots and robotic systems. The organization focuses on creating innovative solutions that enhance human-robot interaction and improve robotic mobility and functionality. With a strong emphasis on artificial intelligence and machine learning, Schaft aims to push the boundaries of robotics technology, contributing to various sectors including manufacturing, logistics, and service industries.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

14 Patents

#1,600 in Tokyo

#3,585 in Japan

#42,312 in the World

Tokyo, JP
Tokyo, Japan

Schaft Inc.

Forward Citations = 49

10 inventors:

goldMedal Junichi Urata (12 out of 22 patents)

silverMedal Yoshito Ito (3 out of 13 patents)

bronzeMedal Koichi Nishiwaki (2 out of 4 patents)

4.  Masaki Hamafuji (2 out of 5 patents)

5.  Nobuyuki Ito (2 out of 29 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Schaft Inc.. Retrieved from https://idiyas.com/company/schaft

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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