For the Inventor, By the Inventor

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Beijing Worldia Diamond Tools Co., Ltd.

USPTO Granted Patents = 3

Trademarks = 5

Forward Citations = 5

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5 inventors (with patents filed for the assignee):

Zongchao Zhang (3 out of 3 patents)

Qi Han (3 out of 4 patents)

Yanyan Wang (1 out of 8 patents)

4. Xiaoyan Fan (1 out of 3 patents)

5. Shuo Han (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 12226837 - Groove cutter with chip breaker (2025-02-18),

2. 11311949 - Indexable face milling cutting insert and face milling cutting head using the cutting insert (2022-04-26),

3. 10220450 - Vertically-mounted milling cutter insert and multitooth milling cutter (2019-03-05),

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USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#2 in Bejing

#7,230 in China

Beijing Worldia Diamond Tools Co., Ltd.

Forward Citations = 5

5 inventors:

Zongchao Zhang (3 out of 3 patents)

Qi Han (3 out of 4 patents)

Yanyan Wang (1 out of 8 patents)

4. Xiaoyan Fan (1 out of 3 patents)

5. Shuo Han (1 out of 1 patent)

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