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Inventor

Richard S. Chang

Inventor
Rolling Hills Estates, CA, US

Overview

10→
Patents
1978–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 10 as inventor

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

A63Fprimary
A63FCard, board, or roulette games36%
A63HToys, e.g. tops, dolls, hoops or building blocks36%
G09BEducational or demonstration appliances18%
G06FElectric digital data processing9%
PatentTitleYear
11,009,949Segmented force sensors for wearable devices20215,433,669'Toy flying device'19955,052,973'Toy car launcher with cable driven shuttle and pulleys'19914,631,041'Miniature flywheel car for side-wheelie stunts'19864,492,582'Teaching and entertainment device'19854,421,313'Display system having multiple viewing stations'19834,372,556'Electronic soccer game'19834,369,971'Electronic bowling game'19834,162,792'Obstacle game'19794,075,771'Toy simulating a calculator'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1986Patents assigned to MATTEL INC (7)· patent assignee history
1978–1995Based in Rolling Hills Estates, CA, US· patent location history
1983Based in Rolling Hills, CA, US· patent location history
1991Patents assigned to TONKA CORP (1)· patent assignee history
1995Patents assigned to LEWIS GALOOB TOYS INC (1)· patent assignee history
2021Patents assigned to APPLE INC (1)· patent assignee history
2021Based in Saratoga, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATTEL INC71978–1986
APPLE INC12021
LEWIS GALOOB TOYS INC11995
TONKA CORP11991
Locations
LocationPatentsSpan
Rolling Hills Estates, California, US71978–1995
Rolling Hills, California, US21983
Saratoga, California, US12021