Inventor · disambiguated record
John A. Fifield
Also filed as: FIFIELD JOHN · FIFIELD JOHN A · FIFIELD JOHN ALFRED
22 granted patents·2 pending applications·740 citations·filing 1988–2014
96Inventor score
Top patents by PatentIndex Score
24 records- 0198US5502940AComposite building element and methods of making and using the sameOLDCASTLE INC·Filed 1993·Granted Apr 2, 1996·155 cites·33 claims
- 0295US6729090B2Insulative building panel with transverse fiber reinforcementOLDCASTLE PRECAST INC·Filed 2002·Granted May 4, 2004·101 cites·20 claims
- 0394USD442703SPaving blockCRH OLDCASTLE INC·Filed 2000·Granted May 22, 2001·59 cites·1 claims
- 0488USD338541SRoof tileOLDCASTLE INC·Filed 1991·Granted Aug 17, 1993·29 cites·1 claims
- 0586USD426317SPaving stoneCRH OLDCASTLE INC·Filed 1999·Granted Jun 6, 2000·30 cites·1 claims
- 0685US5743059ARoof tileCRH OLDCASTLE INC·Filed 1994·Granted Apr 28, 1998·73 cites·16 claims
- 0783US7003922B2Interlocking roof tilesWESTILE INC·Filed 2002·Granted Feb 28, 2006·39 cites·10 claims
- 0882USD356873SRoof tileOLDCASTLE INC·Filed 1993·Granted Mar 28, 1995·24 cites·1 claims
- 0981US5070671ARoof tilesOLDCASTLE INC·Filed 1989·Granted Dec 10, 1991·61 cites·4 claims
- 1078US6899839B2Building productsSHELL OIL CO·Filed 2001·Granted May 31, 2005·14 cites·7 claims
- 1178US5268028ALightweight concrete roof tiles and similar productsOLDCASTLE INC·Filed 1988·Granted Dec 7, 1993·46 cites·13 claims
- 1272USD478179SRoof tileWESTILE INC·Filed 2002·Granted Aug 5, 2003·18 cites·1 claims
- 1366US5214895ARoof tilesOLDCASTLE INC·Filed 1991·Granted Jun 1, 1993·40 cites·10 claims
- 1458US2015084234A1Building block and cladding systemFIFIELD JOHN·Filed 2014·Application pending·0 cites
- 1557USD423114SPaving stoneCRH OLDCASTLE INC·Filed 1997·Granted Apr 18, 2000·9 cites·1 claims
- 1654US8931225B2Building block and cladding systemFIFIELD JOHN·Filed 2010·Granted Jan 13, 2015·2 cites·9 claims
- 1745US5490360ARoofing elementsOLDCASTLE INC·Filed 1994·Granted Feb 13, 1996·22 cites·9 claims
- 1839USD538448SRoof tileFIFIELD JOHN A·Filed 2005·Granted Mar 13, 2007·6 cites·1 claims
- 1939US2003061778A1Roof tilesFiled 2002·Application pending·0 cites
- 2038USD603071SRoof tileFORTICRETE LTD·Filed 2008·Granted Oct 27, 2009·6 cites·1 claims
- 2137USD435121SRoof tileCRH OLDCASTLE INC·Filed 1999·Granted Dec 12, 2000·3 cites·1 claims
- 2229USD604433SNotched mission roof tileOLDCASTLE ARCHITECTURAL INC·Filed 2008·Granted Nov 17, 2009·2 cites·1 claims
- 2328USD608915SCap and pan roof tileOLDCASTLE ARCHITECTURAL INC·Filed 2008·Granted Jan 26, 2010·1 cites·1 claims
- 2424USD604432SCap and pan roof tilesOLDCASTLE ARCHITECTURAL INC·Filed 2008·Granted Nov 17, 2009·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →