Inventor

SEJNOWSKI JOSEPH P

US13 patents

⚠️ This page may combine multiple inventors who share the name “SEJNOWSKI JOSEPH P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PLAYSKOOL INC

3 patents

US5312285AMay 17, 1994

Descending ball game apparatus

PLAYSKOOL INC98 citations95

US5295701AMar 22, 1994

In line roller skate assembly having training wheels

PLAYSKOOL INC39 citations86

US5403018AApr 4, 1995

Water toy

PLAYSKOOL INC13 citations71

PLAYTEX PRODUCTS INC

2 patents

US6202877B1Mar 20, 2001

Lip-openable spill-proof container

PLAYTEX PRODUCTS INC155 citations98

USD421877SMar 28, 2000

Drinking container

PLAYTEX PRODUCTS INC36 citations91

HASBRO INC

2 patents

US5681170AOct 28, 1997

Electronic learning apparatus with self-adjusting level of difficulty

HASBRO INC60 citations93

US5590876AJan 7, 1997

Ball tossing device

HASBRO INC38 citations92

FIRST YEARS INC

1 patent

US6802757B1Oct 12, 2004

Developmental toy

FIRST YEARS INC47 citations92

LA TORRE RICHARD D

1 patent

US8272525B1Sep 25, 2012

Lip-openable spill-proof container

LA TORRE RICHARD D47 citations91

KOLCRAFT ENTPR INC

1 patent

US7878915B2Feb 1, 2011

Child swing and jumper apparatus and methods of operating the same

KOLCRAFT ENTPR INC29 citations90

ITEM NEW PRODUCT DEV

1 patent

US6474373B1Nov 5, 2002

Inflatable device with liquid-powered air pump

ITEM NEW PRODUCT DEV22 citations88

MYERS PETER J

1 patent

US8702526B2Apr 22, 2014

Child swing and jumper apparatus and methods of operating the same

MYERS PETER J5 citations81

KOLCRAFT ENTPR

1 patent

US8357054B2Jan 22, 2013

Child swing and jumper apparatus and methods of operating the same

KOLCRAFT ENTPR11 citations81