Inventor · disambiguated record
Youchun Yan
Also filed as: YAN YOUCHUN
28 granted patents·4 pending applications·651 citations·filing 2003–2025
97Inventor score
Files withGUANGDONG ROMAN TECH CO LTD24YAN YOUCHUN3LODERS CROKLAAN USA LLC2LIPID NUTRITION BV1LODERS CROKLAAN BV1
Top patents by PatentIndex Score
32 records- 0198US10357890B2Detachable floating shaverGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Jul 23, 2019·24 cites·10 claims
- 0296USD806228SWater pickGUANGDONG ROMAN TECH CO LTD·Filed 2016·Granted Dec 26, 2017·74 cites·1 claims
- 0395USD863574SSkin care deviceGUANGDONG ROMAN TECH CO LTD·Filed 2018·Granted Oct 15, 2019·60 cites·1 claims
- 0495USD824595SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Jul 31, 2018·42 cites·1 claims
- 0595USD824103SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Jul 24, 2018·48 cites·1 claims
- 0695USD819274SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2016·Granted May 29, 2018·48 cites·1 claims
- 0795USD812301SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2016·Granted Mar 6, 2018·57 cites·1 claims
- 0894USD824175SElectric toothbrushGUANGDONG ROMAN TECH CO LTD·Filed 2016·Granted Jul 31, 2018·55 cites·1 claims
- 0991USD863578SLaser hair removal deviceGUANGDONG ROMAN TECH CO LTD·Filed 2018·Granted Oct 15, 2019·38 cites·1 claims
- 1090USD1037557SHair dryerGUANGDONG ROMAN TECH CO LTD·Filed 2023·Granted Jul 30, 2024·13 cites·1 claims
- 1190USD864405SLaser hair removal deviceGUANGDONG ROMAN TECH CO LTD·Filed 2018·Granted Oct 22, 2019·35 cites·1 claims
- 1287USD826567SHair dressing deviceGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Aug 28, 2018·28 cites·1 claims
- 1386USD844242SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Mar 26, 2019·22 cites·1 claims
- 1486USD844246SInterchangeable electric gripGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Mar 26, 2019·22 cites·1 claims
- 1580USD838989SHair dressing deviceGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Jan 29, 2019·19 cites·1 claims
- 1678USD866750SCombined toothbrush and water pick unitGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Nov 12, 2019·20 cites·1 claims
- 1777USD1041075SHair drierGUANGDONG ROMAN TECH CO LTD·Filed 2023·Granted Sep 3, 2024·5 cites·1 claims
- 1872USD836837SHairdressing deviceGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Dec 25, 2018·13 cites·1 claims
- 1970USD823542SRazorGUANGDONG ROMAN TECH CO LTD·Filed 2017·Granted Jul 17, 2018·11 cites·1 claims
- 2066US7910757B2Process for the preparation of fatty acidsLIPID NUTRITION BV·Filed 2006·Granted Mar 22, 2011·3 cites·18 claims
- 2163US7193096B2Process for producing a conjugated di- or poly-unsaturated fatty acid of 12 to 24 carbon atoms or salt or ester thereofLODERS CROKLAAN USA LLC·Filed 2004·Granted Mar 20, 2007·3 cites·19 claims
- 2263US2025366586A1Hair straightener with wind gathering functionGUANGDONG ROMAN TECH CO LTD·Filed 2025·Application pending·0 cites
- 2362USD797994SHair curlerYAN YOUCHUN·Filed 2015·Granted Sep 19, 2017·10 cites·1 claims
- 2453USD1098580SHair dryer nozzleGUANGDONG ROMAN TECH CO LTD·Filed 2023·Granted Oct 14, 2025·1 cites·1 claims
- 2553US2024337270A1Guide structure for air-suction nozzleGUANGDONG ROMAN TECH CO LTD·Filed 2023·Application pending·0 cites
- 2649US6943261B2Process for the production of CLA triglyceridesLODERS CROKLAAN USA LLC·Filed 2003·Granted Sep 13, 2005·0 cites·23 claims
- 2743USD1094880SHair straightenerGUANGDONG ROMAN TECH CO LTD·Filed 2024·Granted Sep 23, 2025·0 cites·1 claims
- 2843US2007148266A1Pine needle extractLODERS CROKLAAN BV·Filed 2004·Application pending·0 cites
- 2941US2007264412A1Food Product Comprising an Extract From Pine NeedlesYAN YOUCHUN·Filed 2004·Application pending·0 cites
- 3039USD1089828SHair drierGUANGDONG ROMAN TECH CO LTD·Filed 2023·Granted Aug 19, 2025·0 cites·1 claims
- 3138US9149053B2Method for producing conjugated linoleic acidMONSTER JEROEN·Filed 2011·Granted Oct 6, 2015·0 cites·19 claims
- 3238US8642795B2Process for producing a conjugated unsaturated fatty acidYAN YOUCHUN·Filed 2010·Granted Feb 4, 2014·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →