Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Haikou, CN ranks #21,213 worldwide for total patents filed in 2017, with 2 patents from 1 inventor. Leading employers of inventors based in Haikou, CN include Microsoft.

Showing 1–1 of 1 inventors

Rank Inventor Primary Company Patents
1 Qin Cai Microsoft 2

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