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For the Inventor, By the Inventor

Otsu, Japan

Gem Corporation


USPTO Granted Patents = 12

% Expired Patents = 8.3


Trademarks = 1

Forward Citations = 106

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33 inventors (with patents filed for the assignee):

goldMedal Kaihua Xu (5 out of 33 patents)

silverMedal Rizky Wanaldi (5 out of 22 patents)

bronzeMedal Satryo Soemantri Brodjonegoro (5 out of 23 patents)

4.  Andi Syaputra Hasibuan (5 out of 23 patents)

5.  Tegar Mukti Aji (5 out of 23 patents)

6.  Evan Wahyu Kristiyanto (3 out of 14 patents)

7.  Piyan Rahmadi (3 out of 12 patents)

8.  Marguerite Robinson (2 out of 2 patents)

9.  William H Smith, Jr (2 out of 3 patents)

10.  Emil Salim (2 out of 8 patents)

11.  Tsutomu Sada (1 out of 11 patents)

12.  Manuel Holcomb (1 out of 2 patents)

13.  Peter Christo (1 out of 1 patent)

14.  Robert S Eldred (1 out of 1 patent)

15.  Ora K Fields (1 out of 1 patent)


12 patents:

1. 12723318 - Method for extracting metals from saprolite laterite nickel ore (2026-09-01),
2. 12662715 - Comprehensive utilization method for valuable elements in hydrometallurgical slag of laterite nickel ore (2026-06-23),
3. 12595532 - Ore hydrometallurgical slag and phosphating slag (2026-04-07),
4. 12595530 - System and method for regulating aluminum precipitation during high-pressure acid leaching of laterite nickel ore (2026-04-07),
5. 12590014 - Method for improving particle size and morphology of neutralizer for laterite nickel ore hydrometallurgy (2026-03-31),
6. 9960634 - Intelligent function installing power storage and generation package system (2018-05-01),
7. 5415847 - Treatment of pit waste containing chromated copper arsenate (1995-05-16),
8. 4919819 - Method for removing and decomposing hydrocarbon compounds from water (1990-04-24),
9. D274856 - Wax applicator mop head (1984-07-24),
10. D274565 - Squeeze mop (1984-07-03),
11. 4377879 - Cleaning device (1983-03-29),
12. D247949 - Mop mounting plate (1978-05-23),
Company Overview
Gem Corporation, based in Otsu, Japan, specializes in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions in fields such as electronics, automotive, and industrial applications, leveraging cutting-edge technology to enhance product performance and sustainability. With a commitment to research and development, Gem Corporation aims to address the evolving needs of its clients while contributing to advancements in material science and engineering.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

12 Patents

#1 in Otsu

#3,934 in Japan

#48,129 in the World

Otsu, JP
Otsu, Japan

Gem Corporation

Forward Citations = 106

33 inventors:

goldMedal Kaihua Xu (5 out of 33 patents)

silverMedal Rizky Wanaldi (5 out of 22 patents)

bronzeMedal Satryo Soemantri Brodjonegoro (5 out of 23 patents)

4.  Andi Syaputra Hasibuan (5 out of 23 patents)

5.  Tegar Mukti Aji (5 out of 23 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gem Corporation. Retrieved from https://idiyas.com/company/gem

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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