Patent US3837990A successfully refreshed from Google Patents.
US3837990A
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Reinforced cushioning material
Assignee: Individual
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Filing: 1972-12-07
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Granted: 1974-09-24
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Expires: 1992-12-07
Abstract
Abstract MOLDED THERMOPLASTIC SHEET MATERIAL USEFUL IN CUSHIONING APPLICATIONS. THE MATERIAL IS PROVIDED WITH A MULTIPLICITY OF ADJACENT, CLOSELY SPACED CELLULAR PROTRUSIONS EXTENDING FROM ONE SIDE OF THE SHEET MATERIAL AND AN INTERCONNECTED GRID OF LAND AREAS AT THE BASE OF THE CELLS. THE CUSHIONING MATERIAL IS REINFORCED WITH PERVIOUS MATERIAL ATTACHED TO AND CONNECTING THE LAND AREAS SO AS TO RESIST DEFORMATION.
Inventors
- 👤 Connell R Mc
- 👤 J Huffaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B27/00; B32B27/12; B32B27/32; B29; B29K; B29K2001/00; B29K2001/08; B29K2001/12; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/0633; B29K2101/00; B29K2101/10; B32B2323/00; B32B2323/04; B32B2323/046; B32B2323/10; B32B2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/24628; Y10T428/24661
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |