Inventor
PLATT WILLIAM J
US38 patents
⚠️ This page may combine multiple inventors who share the name “PLATT WILLIAM J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WORTHINGTON ARMSTRONG VENTURE
17 patentsUS7293393B2Nov 13, 2007
Perimeter clip for seismic ceilings
WORTHINGTON ARMSTRONG VENTURE79 citations96
US6701686B1Mar 9, 2004
Ceiling grid with seal
WORTHINGTON ARMSTRONG VENTURE52 citations96
US5839246ANov 24, 1998
Grid framework for suspended ceiling
WORTHINGTON ARMSTRONG VENTURE69 citations95
US6523313B2Feb 25, 2003
Main beam connection
WORTHINGTON ARMSTRONG VENTURE49 citations93
US7788872B2Sep 7, 2010
Seismic main beam connection
WORTHINGTON ARMSTRONG VENTURE28 citations92
US7578107B2Aug 25, 2009
Suspended ceiling segment
WORTHINGTON ARMSTRONG VENTURE47 citations92
US7240460B2Jul 10, 2007
Molding for drywall ceiling grid
WORTHINGTON ARMSTRONG VENTURE37 citations92
US6722098B2Apr 20, 2004
Beam for drywall ceiling
WORTHINGTON ARMSTRONG VENTURE43 citations92
US6138416AOct 31, 2000
Beam
WORTHINGTON ARMSTRONG VENTURE49 citations92
US7614195B2Nov 10, 2009
Suspended ceiling grid network utilizing seismic separation joint clips
WORTHINGTON ARMSTRONG VENTURE48 citations90
US7278243B2Oct 9, 2007
Molding for suspended panel ceiling
WORTHINGTON ARMSTRONG VENTURE27 citations86
US7926238B2Apr 19, 2011
Stab-in connector
WORTHINGTON ARMSTRONG VENTURE7 citations84
US7669374B2Mar 2, 2010
Beam for a drywall ceiling soffit
WORTHINGTON ARMSTRONG VENTURE11 citations84
US7520095B2Apr 21, 2009
Hook connector with plastic fire relief
WORTHINGTON ARMSTRONG VENTURE12 citations84
US7661236B2Feb 16, 2010
Stab-in connector with expansion relief
WORTHINGTON ARMSTRONG VENTURE16 citations83
US6351919B1Mar 5, 2002
Compression relief section
WORTHINGTON ARMSTRONG VENTURE16 citations83
US6763642B2Jul 20, 2004
Grid for a suspended ceiling
WORTHINGTON ARMSTRONG VENTURE9 citations74
NAT ROLLING MILLS INC
15 patentsUS5046294ASep 10, 1991
Perimeter clip
NAT ROLLING MILLS INC89 citations96
US4916877AApr 17, 1990
Fire strip construction
NAT ROLLING MILLS INC26 citations92
US4864791ASep 12, 1989
Fire strip
NAT ROLLING MILLS INC27 citations92
US4827681AMay 9, 1989
Interlocking cross tee
NAT ROLLING MILLS INC37 citations92
US4785603ANov 22, 1988
Interlocking cross tee
NAT ROLLING MILLS INC30 citations92
US4713919ADec 22, 1987
Laser welded ceiling grid members
NAT ROLLING MILLS INC41 citations92
US4794745AJan 3, 1989
Tier drop grid system
NAT ROLLING MILLS INC67 citations91
US4727703AMar 1, 1988
Suspended ceiling grid structure
NAT ROLLING MILLS INC13 citations74
US5390456AFeb 21, 1995
Decorative suspended ceiling
NAT ROLLING MILLS INC12 citations71
US5279033AJan 18, 1994
Method of making a beam for a decorative suspended ceiling
NAT ROLLING MILLS INC7 citations71
US5241798ASep 7, 1993
Decorative suspended ceiling
NAT ROLLING MILLS INC8 citations71
US4926607AMay 22, 1990
Compression leg
NAT ROLLING MILLS INC12 citations71
US4606166AAug 19, 1986
Fire-rated beam with expansion relief section
NAT ROLLING MILLS INC16 citations68
US4955134ASep 11, 1990
Method of forming a spring-like fire strip
NAT ROLLING MILLS INC4 citations63
US4890428AJan 2, 1990
Partition clip
NAT ROLLING MILLS INC5 citations63
PLATT WILLIAM J
4 patentsUS8096089B2Jan 17, 2012
Suspended ceiling cloud with flexible panel
PLATT WILLIAM J34 citations92
US8590275B2Nov 26, 2013
Single-layered web beam for a panel suspended ceiling
PLATT WILLIAM J11 citations83
US8590274B2Nov 26, 2013
Single-layered web beam for a suspended ceiling
PLATT WILLIAM J4 citations62
US8572930B2Nov 5, 2013
Single layered web beam for a drywall suspended ceiling
PLATT WILLIAM J3 citations62