Playworld Systems, Inc.
21Patents
11Active
21Granted
37Portfolio score
Filing activity: Aug 15, 1997 → Sep 8, 2017 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5904099A | Cushioned braking system for a monorail trolley | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| USD729334S1 | Playground climbing structure | General | 23 | Active |
| USD792521S1 | Climbable block | General | 13 | Active |
| US5984058A | Cushioned braking system for a monorail trolley | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| USD809619S1 | Climbable play sculpture | General | 10 | Active |
| USD821526S1 | Climbable play sculpture | General | 8 | Active |
| USD728721S1 | Combined cord and seat support memebers | General | 7 | Active |
| USD565119S1 | Electronic game apparatus | General | 4 | Expired |
| USD835223S1 | Climbable playground structure | General | 4 | Active |
| USD788858S1 | Climbable integral block formation | General | 4 | Active |
| USD835224S1 | Climbable play sculpture | General | 3 | Active |
| USD565121S1 | Electronic game apparatus | General | 3 | Expired |
| USD515151S1 | Exercise station | General | 2 | Expired |
| USD529106S1 | Exercise station | General | 2 | Expired |
| USD528613S1 | Exercise station | General | 1 | Expired |
| USD481439S1 | Playground riding event | General | 1 | Expired |
| US9220938B2 | Playground assembly | Human Necessities | 1 | Active |
| US8920254B2 | Anti-wrap swing hanger and swing assembly | Emerging Cross-Sectional Technologies | 0 | Active |
| USD481096S1 | Playground riding event | General | 0 | Expired |
| USD565120S1 | Electronic game apparatus | General | 0 | Expired |
| USD701931S1 | Swing hanger | General | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.