The significant tufting-machine patents filed in China are foreign

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Research notes

CORRECTED. CN1030783C (Norddeutsche Faserwerke) is a patent for a recyclable tufted carpet, not a tufting machine, so it doesn't support this claim. CN113584750A (Card-Monroe, priority 2016) is confirmed. Note too that Chinese gun and robot-tufting patents exist (see the foreign patents added in 2026, e.g. CN2723478Y, CN104562491A), so the claim holds at most for broadloom machines. CN113584750A (Card-Monroe Corp, US, filed 2017); CN1030783C (Norddeutsche Faserwerke, Germany, 1992). The 1990s Chinese carpet patents are about improving hand looms. Citation check (Oct 2026, from search results; pages not opened): partly confirmed. CN113584750A (Card-Monroe Corp.) is confirmed. It is a divisional application with priority 2016-03-17 and parent filing 2017-03-16. CN1030783C (Norddeutsche Faserwerke GmbH) is a tufted CARPET product patent: a mono-material, recyclable carpet. It is NOT a tufting-machine patent, so it does not support 'tufting-machine patents in China are foreign'. Its Chinese application was filed 1992 with 1991 German priority, granted 1996, and has lapsed. The claim that 1990s Chinese carpet patents concern hand looms was not verified, and some Chinese tufting-machine patents exist (e.g. CN206052345U 地毯簇绒机). Source: CN113584750A 簇绒机、簇绒方法和针距部件组件 (Tufting machine, tufting method and gauge part assembly), Google Patents, CN113584750A: filed 2017-03-16 (divisional of CN201780018740.X), priority 2016-03-17, published 2021-11-02; CN1030783C: filed 1992-04-09, priority 1991-04-09, granted/published 1996. Found at: https://patents.google.com/patent/CN113584750A/zh Also: https://patents.google.com/patent/CN1067459A/zh · https://patents.google.com/patent/CN108884620B/zh · https://patents.google.com/patent/CN206052345U/zh