Field briefing
E03F · Sewers
Sewers; cesspools. Patents classified in CPC E03F, part of Construction and mining.
Dates, owners, statuses and filings come from the published records. Derived views are counted from them. Highlighted text is a plain-English AI reading, written from a patent's title and abstract. Legal statuses and expiry dates are estimates, not legal advice.
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Connected industries
Other industries that share patents, companies or citations with Sewers.
Newest patents in E03F · Sewers
1 patent imported from the European Patent Office; newest published 2026-08-21; most active companies: 中国电建市政建设集团有限公司, 河北工业大学.
- 一种砂土地基上管道接地低电阻与防腐协作智能调控方法 CN122611322A, published 2026-08-21
Most active companies
Counted over the newest 1 imported patents in this industry.
- 中国电建市政建设集团有限公司 1 patent
- 河北工业大学 1 patent