Growing community of inventors

Grand Rapids, MI, United States of America

Joseph Chang

Average Co-Inventor Count = 9.13

ph-index = 10

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 = 409

Joseph ChangMichael L Waalkes (11 patents)Joseph ChangPeter Nils Skillman (10 patents)Joseph ChangBrian J Kane (10 patents)Joseph ChangDennis Joseph Boyle (10 patents)Joseph ChangCharles Anthony Seiber (10 patents)Joseph ChangMark T Slager (10 patents)Joseph ChangMichael R Shields (10 patents)Joseph ChangMarcus K Pressnell (10 patents)Joseph ChangRobin Christopher (10 patents)Joseph ChangRichard Scott Hand (6 patents)Joseph ChangDouglas L Scheerhorn (3 patents)Joseph ChangKevin J Longhurst (2 patents)Joseph ChangTheodore Q Chau (2 patents)Joseph ChangJohn L McCrackin (2 patents)Joseph ChangPaul J Granzotto (2 patents)Joseph ChangAlan Ernest Rheault (1 patent)Joseph ChangThomas G Feldpausch (1 patent)Joseph ChangCarl V Forslund, Iii (1 patent)Joseph ChangDouglas B MacDonald (1 patent)Joseph ChangJonathan Jay King (1 patent)Joseph ChangDonald P Gravel (1 patent)Joseph ChangSteven E Sanders (1 patent)Joseph ChangJames R Dykstra (1 patent)Joseph ChangDavid A Walz (1 patent)Joseph ChangPatricia A Williams (1 patent)Joseph ChangJoseph Chang (12 patents)Michael L WaalkesMichael L Waalkes (18 patents)Peter Nils SkillmanPeter Nils Skillman (69 patents)Brian J KaneBrian J Kane (63 patents)Dennis Joseph BoyleDennis Joseph Boyle (54 patents)Charles Anthony SeiberCharles Anthony Seiber (51 patents)Mark T SlagerMark T Slager (39 patents)Michael R ShieldsMichael R Shields (31 patents)Marcus K PressnellMarcus K Pressnell (11 patents)Robin ChristopherRobin Christopher (11 patents)Richard Scott HandRichard Scott Hand (50 patents)Douglas L ScheerhornDouglas L Scheerhorn (3 patents)Kevin J LonghurstKevin J Longhurst (10 patents)Theodore Q ChauTheodore Q Chau (9 patents)John L McCrackinJohn L McCrackin (5 patents)Paul J GranzottoPaul J Granzotto (2 patents)Alan Ernest RheaultAlan Ernest Rheault (36 patents)Thomas G FeldpauschThomas G Feldpausch (32 patents)Carl V Forslund, IiiCarl V Forslund, Iii (31 patents)Douglas B MacDonaldDouglas B MacDonald (25 patents)Jonathan Jay KingJonathan Jay King (23 patents)Donald P GravelDonald P Gravel (7 patents)Steven E SandersSteven E Sanders (4 patents)James R DykstraJames R Dykstra (3 patents)David A WalzDavid A Walz (2 patents)Patricia A WilliamsPatricia A Williams (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Steelcase Inc. (12 from 1,812 patents)


12 patents:

1. 7565772 - Knock-down portable partition system

2. 7448168 - Knock-down portable partition system

3. 6910306 - Knock-down portable partition system

4. 6546684 - Partition panel

5. 6442909 - Knock-down portable partition system

6. 6330773 - Stacking bracket for partitions

7. 6301846 - Knock-down portable partition system

8. 6276103 - Cover panel brace for partition systems

9. 6098358 - Knock-down portable partition system

10. 6079173 - Knock-down portable partition system

11. 5943833 - In-floor utility outlet

12. 5899035 - Knock-down portable partition system

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as of
1/7/2026
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