EPO Patents = 1

Forward Citations = 1

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14 inventors (with patents filed for the assignee):

Hiroshi Fujimoto (2 out of 57 patents)

Masahiro Kimura (1 out of 100 patents)

Keigo Yamazaki (1 out of 1 patent)

4. Etsuo Goto (1 out of 1 patent)

5. Junichi Hatta (1 out of 1 patent)

6. Hiroshi Kawaguchi (1 out of 88 patents)

7. Kazuhide Tsuchiya (1 out of 1 patent)

8. Tetsuya Kageyama (1 out of 1 patent)

9. Masamichi Abe (1 out of 4 patents)

10. Hiroyuki Washio (1 out of 1 patent)

11. Atsushi Umaki (1 out of 1 patent)

12. Ippei Shiode (1 out of 1 patent)

13. Hiroshi Takechi (1 out of 1 patent)

14. Toshihide Nakama (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 10909076 - Management unit existence determination system and management unit existence determination program (2021-02-02),

2. 10834533 - Processing device, processing method, and program (2020-11-10),

3. 10783244 - Information processing system, information processing method, and program (2020-09-22),

4. 10164839 - Log analysis system (2018-12-25),

5. 10104108 - Log analysis system (2018-10-16),

Company Overview

Lac Co., Ltd. is a leading manufacturer of high-quality lacquer products. With over 20 years of experience in the industry, we specialize in producing lacquerware for various purposes, including home decor, kitchenware, and furniture. Our products are known for their exceptional craftsmanship, durability, and unique designs. We take pride in using traditional lacquer techniques combined with modern innovation to create timeless pieces that are both functional and stylish. Visit our website to explore our wide range of lacquer products and bring a touch of elegance to your home.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

5 Patents

#2,721 in Tokyo

#6,651 in Japan

Tokyo, Japan

Lac Co., Ltd.

Forward Citations = 1

14 inventors:

Hiroshi Fujimoto (2 out of 57 patents)

Masahiro Kimura (1 out of 100 patents)

Keigo Yamazaki (1 out of 1 patent)

4. Etsuo Goto (1 out of 1 patent)

5. Junichi Hatta (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Lac Co., Ltd.. Retrieved from https://idiyas.com/company/lac-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]

1 patent (EPO):

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]