Assignee
POLYTOP CORP
US37 patents
Top patents by PatentIndex Score
US4625898ADec 2, 1986
Dispensing closure employing living hinge with cams to momentarily deform hinge and recesses to accept cams
POLYTOP CORP121 citations96
US4124151ANov 7, 1978
Toggle type dispensing closure
POLYTOP CORP69 citations96
US4377247AMar 22, 1983
Dispensing closure employing living hinge
POLYTOP CORP100 citations95
US4220248ASep 2, 1980
Closure with hinged lid and cam and spring elements holding lid open or closed
POLYTOP CORP80 citations95
US7762438B2Jul 27, 2010
Dispensing closure with latch back
POLYTOP CORP50 citations94
US4759455AJul 26, 1988
Child resistant closure with deformable panel
POLYTOP CORP56 citations94
US5542585AAug 6, 1996
Dispensing closure with pivotably mounted spout and means for limiting travel thereof
POLYTOP CORP188 citations93
US5271536ADec 21, 1993
Flexible holder for "living" hinge joining lid to closure body of dispensing closure
POLYTOP CORP70 citations93
USD629685SDec 28, 2010
Dispensing closure
POLYTOP CORP19 citations92
USD621260SAug 10, 2010
Dispensing closure
POLYTOP CORP33 citations92
US7735699B2Jun 15, 2010
Dispensing closure having a flow conduit with key-hole shape
POLYTOP CORP30 citations92
US7637402B2Dec 29, 2009
Dispensing cap with center channel and helical flow profile
POLYTOP CORP33 citations92
US7314150B2Jan 1, 2008
Dispensing closure with cap structure having dual living hinges
POLYTOP CORP17 citations92
US6050459AApr 18, 2000
Rigid dip tube connector for a liquid spray dispenser
POLYTOP CORP52 citations92
US5890633AApr 6, 1999
Two component, molded plastic dispenser operating on push-pull principle
POLYTOP CORP20 citations92
US4282991AAug 11, 1981
Dispensing closure seals
POLYTOP CORP30 citations92
US4081113AMar 28, 1978
Child resistant dispensing closure
POLYTOP CORP37 citations92
US4047643ASep 13, 1977
Safety dispensing closure with movable retainer
POLYTOP CORP36 citations92
US4047495ASep 13, 1977
Child resistant dispensing closures
POLYTOP CORP52 citations92
US3977557AAug 31, 1976
Container-closure structure employing fitment to prevent closure removal
POLYTOP CORP48 citations92
US7322493B2Jan 29, 2008
Dispensing closure having complete peripheral seal
POLYTOP CORP16 citations91
US4756451AJul 12, 1988
Child resistant closure with energy planes
POLYTOP CORP28 citations91
US4718567AJan 12, 1988
Child resistant dispensing closure
POLYTOP CORP87 citations91
US7128227B2Oct 31, 2006
Dispensing closure with stop wall for positive alignment on container
POLYTOP CORP45 citations90
US4903870AFeb 27, 1990
Dispensing closure
POLYTOP CORP44 citations88
US4776475AOct 11, 1988
Child resistant dispensing closure
POLYTOP CORP33 citations88
US5356044AOct 18, 1994
Tamper evident seal for dispensing closure
POLYTOP CORP23 citations86
US7980432B2Jul 19, 2011
Dispensing closure having a flow conduit with key-hole shape
POLYTOP CORP14 citations84
US4219138AAug 26, 1980
Dispensing closure utilizing a sealing element supported by a washer spring
POLYTOP CORP26 citations82
US3957181AMay 18, 1976
Child resistant dispensing closure
POLYTOP CORP28 citations82
US4081108AMar 28, 1978
Tamper evident one-piece dispensing closures
POLYTOP CORP29 citations81
US4209114AJun 24, 1980
Dispensing closure structures
POLYTOP CORP26 citations75
US5524799AJun 11, 1996
Dispensing closure employing standards with bearings to receive spout therein
POLYTOP CORP17 citations74
US3967764AJul 6, 1976
Child-resistant closures with limited spout accessibility
POLYTOP CORP13 citations73
US4172540AOct 30, 1979
Dispensing closure
POLYTOP CORP30 citations70
US5190176AMar 2, 1993
Child resistant closure with protective flange and canted upper wall
POLYTOP CORP11 citations59
US4164305AAug 14, 1979
Spray type dispensing closure
POLYTOP CORP3 citations45