Growing community of inventors

Rolling Hills Estates, CA, United States of America

Richard S Chang

Average Co-Inventor Count = 2.36

ph-index = 6

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 135

Richard S ChangElliot A Rudell (1 patent)Richard S ChangJoseph S Cernansky (1 patent)Richard S ChangRoger J Gardner (1 patent)Richard S ChangGeorge J Klose (1 patent)Richard S ChangEdmund Emil Landsinger (1 patent)Richard S ChangIan Ayton (1 patent)Richard S ChangDaniel J Shoff (1 patent)Richard S ChangJan B Chodak (1 patent)Richard S ChangRobert D Zera (1 patent)Richard S ChangRichard S Levine (1 patent)Richard S ChangMichael D Minkoff (1 patent)Richard S ChangWalter S Nakano (1 patent)Richard S ChangJohn Y Ling (1 patent)Richard S ChangWilliam Joseph Gross (1 patent)Richard S ChangSteven J Huebl (1 patent)Richard S ChangEugene J Kilroy (1 patent)Richard S ChangRichard S Chang (9 patents)Elliot A RudellElliot A Rudell (73 patents)Joseph S CernanskyJoseph S Cernansky (22 patents)Roger J GardnerRoger J Gardner (10 patents)George J KloseGeorge J Klose (5 patents)Edmund Emil LandsingerEdmund Emil Landsinger (4 patents)Ian AytonIan Ayton (4 patents)Daniel J ShoffDaniel J Shoff (4 patents)Jan B ChodakJan B Chodak (3 patents)Robert D ZeraRobert D Zera (3 patents)Richard S LevineRichard S Levine (3 patents)Michael D MinkoffMichael D Minkoff (3 patents)Walter S NakanoWalter S Nakano (3 patents)John Y LingJohn Y Ling (2 patents)William Joseph GrossWilliam Joseph Gross (1 patent)Steven J HueblSteven J Huebl (1 patent)Eugene J KilroyEugene J Kilroy (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mattel, Inc. (7 from 1,702 patents)

2. Tonka Corporation (1 from 47 patents)

3. Lewis Galoob Toys, Inc. (1 from 4 patents)


9 patents:

1. 5433669 - Toy flying device

2. 5052973 - Toy car launcher with cable driven shuttle and pulleys

3. 4631041 - Miniature flywheel car for side-wheelie stunts

4. 4492582 - Teaching and entertainment device

5. 4421313 - Display system having multiple viewing stations

6. 4372556 - Electronic soccer game

7. 4369971 - Electronic bowling game

8. 4162792 - Obstacle game

9. 4075771 - Toy simulating a calculator

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as of
12/15/2025
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