EPO Patents = 1

Forward Citations = 1,036

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5 inventors (with patents filed for the assignee):

Jingyi Hu (2 out of 4 patents)

Keduan Xu (1 out of 3 patents)

Yingming Liu (1 out of 4 patents)

4. Xiangyang Han (1 out of 1 patent)

5. Jingyl Hu (1 out of 1 patent)

6. Guoqi Zhang (0 patent)

7. Xianbin Song (0 patent)

8. Zheming Li (0 patent)

5 patents: Sort by Forward Citations

1. 7726365 - Electric pencil sharpener (2010-06-01),

2. 7674969 - Finger musical instrument (2010-03-09),

3. 7581573 - Electric pencil sharpener (2009-09-01),

4. 7311238 - Electric stapler (2007-12-25),

5. 7240703 - Automatic pencil sharpener (2007-07-10),

Ringsun (Shenzhen) Industrial Limited is a leading manufacturer and exporter of office supplies and stationery products. With over 20 years of experience in the industry, Ringsun is known for its high-quality products, innovative designs, and excellent customer service. The company offers a wide range of products including paper shredders, laminators, label makers, and more. Ringsun is committed to providing reliable and affordable solutions to meet the needs of businesses and individuals around the world.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

5 Patents

#722 in Shenzhen

#4,566 in China

Shenzhen, China

Ringsun (shenzhen) Industrial Limited