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Inventor

Barbara Plain

Inventor
Des Plaines, IL, US

Overview

6→
Patents
1997–2020
Patent span
Physics
Primary field (CPC G)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

LOC21primary
LOC2140%
A63HToys, e.g. tops, dolls, hoops or building blocks20%
G06KGraphical data reading20%
G09BEducational or demonstration appliances20%
PatentTitleYear
D0890861Toy robot20207,351,062'Educational devices, systems and methods using optical character recognition'20086,532,314'Talking toy scanner'20036,179,682'Teaching toy telephone'2001D0420405'Teaching toy telephone'2000D0377949'Digital/analog teaching clock'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to ERNST TIRZA (1)· patent assignee history
1997Patents assigned to PLAIN BARBARA (1)· patent assignee history
1997Patents assigned to WOLDENBERG JANE (1)· patent assignee history
1997Patents assigned to WOLDENBERG RICHARD (1)· patent assignee history
1997–2003Based in Des Plaines, IL, US· patent location history
2000–2020Patents assigned to LEARNING RESOURCES INC (5)· patent assignee history
2008–2020Based in Winnetka, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LEARNING RESOURCES INC52000–2020
ERNST TIRZA11997
PLAIN BARBARAself11997
WOLDENBERG JANE11997
WOLDENBERG RICHARD11997
Locations
LocationPatentsSpan
Des Plaines, Illinois, US41997–2003
Winnetka, Illinois, US22008–2020