Inventor · disambiguated record
John L. Hadfield, Sr.
Also filed as: HADFIELD SR JOHN L
3 granted patents·45 citations·filing 2000–2002
72Inventor score
Files withVINYL IND INC3
Top patents by PatentIndex Score
3 records- 0166US6938882B2Knocked-down, rigid, sheathed, gate frameVINYL IND INC·Filed 2002·Granted Sep 6, 2005·18 cites·20 claims
- 0262US6446938B1Knocked-down, rigid, sheathed, gate frameVINYL IND INC·Filed 2000·Granted Sep 10, 2002·15 cites·18 claims
- 0361US6491286B1Knocked-down, rigid, sheathed, gate frameVINYL IND INC·Filed 2000·Granted Dec 10, 2002·12 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →