Inventor · disambiguated record
John H. Douglas
Also filed as: DOUGLAS JOHN · DOUGLAS JOHN H
10 granted patents·2 pending applications·169 citations·filing 1992–2004
91Inventor score
Top patents by PatentIndex Score
12 records- 0185US6599428B1Filter system for removing contaminants from water and method thereofPARAGON WATER SYSTEMS INC·Filed 2000·Granted Jul 29, 2003·33 cites·10 claims
- 0285USD416072SShowerhead filterDOUGLAS JOHN H·Filed 1998·Granted Nov 2, 1999·32 cites·1 claims
- 0371USD372515SWater purification unitPARAGON WATER SYSTEMS·Filed 1995·Granted Aug 6, 1996·18 cites·1 claims
- 0470US6796518B2Multi-function showerhead filter systemFiled 2002·Granted Sep 28, 2004·24 cites·6 claims
- 0565USD347462SWater purification unitH T MFG INC·Filed 1992·Granted May 31, 1994·14 cites·1 claims
- 0661USD413371SCombined showerhead and filterDOUGLAS JOHN H·Filed 1998·Granted Aug 31, 1999·12 cites·1 claims
- 0760USD403406SWater purification unitPARAGON WATER SYSTEMS INC·Filed 1996·Granted Dec 29, 1998·11 cites·1 claims
- 0857USD417904SShowerhead filter systemDOUGLAS JOHN H·Filed 1998·Granted Dec 21, 1999·10 cites·1 claims
- 0949USD484569SShowerheadFiled 2003·Granted Dec 30, 2003·7 cites·1 claims
- 1039US2005035228A1Multi-function showerhead filter system with swivel inlet connectionFiled 2004·Application pending·0 cites
- 1138US2002063089A1Water filtration device employing far infrared mediaFiled 2001·Application pending·0 cites
- 1237US5975434AShowerhead system with turbulence inducing and water purification meansFiled 1998·Granted Nov 2, 1999·8 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →