失效专利检索
失效专利检索、免费可用的专利技术。当用户说「有没有失效的专利可以直接用」「这个技术有过期的专利吗」「找免费技术方案」「哪些专利已经不保护了」「中小企业找可用技术」时使用。输出失效专利清单（Excel 能打开），带失效原因和需要再核实的提醒。 Finds lapsed Chinese invention patents in a technology whose solutions are public and no longer protected, grouped by lapse reason, with items to double-check before use.
as observed 2026-10-20T23:50:05.613Z- Identifier
expired-patent-finder- Source
- ClawHub
- Version observed
- 1.0.2
- Source repository
- not published
- Repository observation
- No source repository listed
- First observed here
- 2026-10-19T22:50:38.661Z
- Observations recorded
- 2
- Installs (reported upstream)
- 0
- Weekly downloads (upstream)
- 125
- Declared license
- MIT-0
Observation history
2026-10-20T23:50:05.613Z
Fields that differed: changelog latestVersion
| Field | Before | After |
|---|---|---|
changelog |
"首发。" | "免费试用金按功能分档（检索 ¥8、报告 ¥15、交底书和撰写 ¥20），说明里的金额同步更新。" |
latestVersion |
"1.0.0" | "1.0.2" |
Correction
If you maintain this extension and believe anything above is inaccurate, request a correction. Corrections are published, and disputed entries are marked as disputed while under review.