Inventor · disambiguated record
William J. Platt
Also filed as: PLATT WILLIAM · PLATT WILLIAM J
39 granted patents·2 pending applications·1,118 citations·filing 1985–2011
98Inventor score
Files withWORTHINGTON ARMSTRONG VENTURE19NAT ROLLING MILLS INC16PLATT WILLIAM J4KELLY JOSEPH J1SAREYKA BRETT W1
Top patents by PatentIndex Score
41 records- 0195US7614195B2Suspended ceiling grid network utilizing seismic separation joint clipsWORTHINGTON ARMSTRONG VENTURE·Filed 2007·Granted Nov 10, 2009·48 cites·5 claims
- 0295US7578107B2Suspended ceiling segmentWORTHINGTON ARMSTRONG VENTURE·Filed 2005·Granted Aug 25, 2009·47 cites·8 claims
- 0395US7293393B2Perimeter clip for seismic ceilingsWORTHINGTON ARMSTRONG VENTURE·Filed 2004·Granted Nov 13, 2007·79 cites·5 claims
- 0493US8096089B2Suspended ceiling cloud with flexible panelPLATT WILLIAM J·Filed 2008·Granted Jan 17, 2012·34 cites·5 claims
- 0591US7788872B2Seismic main beam connectionWORTHINGTON ARMSTRONG VENTURE·Filed 2008·Granted Sep 7, 2010·28 cites·4 claims
- 0689US6701686B1Ceiling grid with sealWORTHINGTON ARMSTRONG VENTURE·Filed 2003·Granted Mar 9, 2004·52 cites·11 claims
- 0789US5046294APerimeter clipNAT ROLLING MILLS INC·Filed 1990·Granted Sep 10, 1991·89 cites·6 claims
- 0887US8590275B2Single-layered web beam for a panel suspended ceilingPLATT WILLIAM J·Filed 2006·Granted Nov 26, 2013·11 cites·3 claims
- 0986US6722098B2Beam for drywall ceilingWORTHINGTON ARMSTRONG VENTURE·Filed 2002·Granted Apr 20, 2004·43 cites·2 claims
- 1086US6523313B2Main beam connectionWORTHINGTON ARMSTRONG VENTURE·Filed 2001·Granted Feb 25, 2003·49 cites·12 claims
- 1184US7278243B2Molding for suspended panel ceilingWORTHINGTON ARMSTRONG VENTURE·Filed 2005·Granted Oct 9, 2007·27 cites·18 claims
- 1284US7240460B2Molding for drywall ceiling gridWORTHINGTON ARMSTRONG VENTURE·Filed 2004·Granted Jul 10, 2007·37 cites·23 claims
- 1383US4912894AInterlocking cross teeNAT ROLLING MILLS INC·Filed 1989·Granted Apr 3, 1990·56 cites·2 claims
- 1482US4794745ATier drop grid systemNAT ROLLING MILLS INC·Filed 1986·Granted Jan 3, 1989·67 cites·12 claims
- 1581US7669374B2Beam for a drywall ceiling soffitWORTHINGTON ARMSTRONG VENTURE·Filed 2007·Granted Mar 2, 2010·11 cites·6 claims
- 1680US5839246AGrid framework for suspended ceilingWORTHINGTON ARMSTRONG VENTURE·Filed 1996·Granted Nov 24, 1998·69 cites·11 claims
- 1779US7520095B2Hook connector with plastic fire reliefWORTHINGTON ARMSTRONG VENTURE·Filed 2005·Granted Apr 21, 2009·12 cites·6 claims
- 1877US8938926B2Wall linerSAREYKA BRETT W·Filed 2007·Granted Jan 27, 2015·9 cites·5 claims
- 1975US4827681AInterlocking cross teeNAT ROLLING MILLS INC·Filed 1987·Granted May 9, 1989·37 cites·1 claims
- 2075US4713919ALaser welded ceiling grid membersNAT ROLLING MILLS INC·Filed 1986·Granted Dec 22, 1987·41 cites·21 claims
- 2173US8590274B2Single-layered web beam for a suspended ceilingPLATT WILLIAM J·Filed 2006·Granted Nov 26, 2013·4 cites·3 claims
- 2273US6138416ABeamWORTHINGTON ARMSTRONG VENTURE·Filed 1998·Granted Oct 31, 2000·49 cites·7 claims
- 2372US8578673B2Suspended ceiling gusset stayKELLY JOSEPH J·Filed 2008·Granted Nov 12, 2013·8 cites·5 claims
- 2469US8572930B2Single layered web beam for a drywall suspended ceilingPLATT WILLIAM J·Filed 2006·Granted Nov 5, 2013·3 cites·3 claims
- 2567US7661236B2Stab-in connector with expansion reliefWORTHINGTON ARMSTRONG VENTURE·Filed 2004·Granted Feb 16, 2010·16 cites·7 claims
- 2665US6351919B1Compression relief sectionWORTHINGTON ARMSTRONG VENTURE·Filed 2000·Granted Mar 5, 2002·16 cites·2 claims
- 2764US4785603AInterlocking cross teeNAT ROLLING MILLS INC·Filed 1986·Granted Nov 22, 1988·30 cites·4 claims
- 2861US4916877AFire strip constructionNAT ROLLING MILLS INC·Filed 1989·Granted Apr 17, 1990·26 cites·1 claims
- 2961US4864791AFire stripNAT ROLLING MILLS INC·Filed 1988·Granted Sep 12, 1989·27 cites·5 claims
- 3058US7926238B2Stab-in connectorWORTHINGTON ARMSTRONG VENTURE·Filed 2004·Granted Apr 19, 2011·7 cites·1 claims
- 3157US2009126305A1Wall linerWORTHINGTON ARMSTRONG VENTURE·Filed 2008·Application pending·0 cites
- 3251US6763642B2Grid for a suspended ceilingWORTHINGTON ARMSTRONG VENTURE·Filed 2002·Granted Jul 20, 2004·9 cites·4 claims
- 3346US5390456ADecorative suspended ceilingNAT ROLLING MILLS INC·Filed 1993·Granted Feb 21, 1995·12 cites·5 claims
- 3445US4727703ASuspended ceiling grid structureNAT ROLLING MILLS INC·Filed 1986·Granted Mar 1, 1988·13 cites·8 claims
- 3542US2013042560A1Noise damperWORTHINGTON ARMSTRONG VENTURE·Filed 2011·Application pending·0 cites
- 3641US4926607ACompression legNAT ROLLING MILLS INC·Filed 1989·Granted May 22, 1990·12 cites·4 claims
- 3741US4606166AFire-rated beam with expansion relief sectionNAT ROLLING MILLS INC·Filed 1985·Granted Aug 19, 1986·16 cites·4 claims
- 3834US5241798ADecorative suspended ceilingNAT ROLLING MILLS INC·Filed 1991·Granted Sep 7, 1993·8 cites·6 claims
- 3933US5279033AMethod of making a beam for a decorative suspended ceilingNAT ROLLING MILLS INC·Filed 1993·Granted Jan 18, 1994·7 cites·2 claims
- 4032US4890428APartition clipNAT ROLLING MILLS INC·Filed 1988·Granted Jan 2, 1990·5 cites·3 claims
- 4131US4955134AMethod of forming a spring-like fire stripNAT ROLLING MILLS INC·Filed 1989·Granted Sep 11, 1990·4 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →