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Inventor

Joseph Chang

Inventor
Grand Rapids, MI, US

Overview

14→
Patents
1999–2018
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 14 as inventor

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

E04Bprimary
E04BGeneral building constructions46%
A47BTables38%
A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body4%
A63GMerry-go-rounds4%
E04HBuildings or like structures for particular purposes4%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines4%
PatentTitleYear
9,861,901'Easily transportable inflation and deflation assembly for a bounce house'20188,708,363'Folding walker'20147,565,772'Knock-down portable partition system'20097,448,168'Knock-down portable partition system'20086,910,306'Knock-down portable partition system'20056,546,684'Partition panel'20036,442,909'Knock-down portable partition system'20026,330,773'Stacking bracket for partitions'20016,301,846'Knock-down portable partition system'20016,276,103'Cover panel brace for partition systems'20016,098,358'Knock-down portable partition system'20006,079,173'Knock-down portable partition system'20005,943,833'In-floor utility outlet'19995,899,035'Knock-down portable partition system'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2009Patents assigned to STEELCASE INC (4)· patent assignee history
1999–2009Based in Grand Rapids, MI, US· patent location history
2000–2001Patents assigned to STEELCASE DEV INC (4)· patent assignee history
2001–2005Patents assigned to STEELCASE DEV CORP (4)· patent assignee history
2014Patents assigned to CHANG JOSEPH HSIAO-WEN (1)· patent assignee history
2014Based in Pompano Beach, FL, US· patent location history
2018Patents assigned to MGA ENTERTAINMENT INC (1)· patent assignee history
2018Based in Los Angeles, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
STEELCASE DEV CORP42001–2005
STEELCASE DEV INC42000–2001
STEELCASE INC41999–2009
CHANG JOSEPH HSIAO-WENself12014
MGA ENTERTAINMENT INC12018
Locations
LocationPatentsSpan
Grand Rapids, MI, US121999–2009
Los Angeles, California, US12018
Pompano Beach, Florida, US12014