US3558417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-repellant resinous foam
Assignee: Monsanto Research Corp
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Filing: 1968-02-14
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Granted: 1971-01-26
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Expires: 1988-02-14
Abstract
Abstract A BUOYANT MEMBER FOR A COLLAPSIBLE BUOYANT DEVICE, COMPRISING (1) AN INNER OPEN-CELL FLEXIBLE RESINOUS FOAM SURFACE-COATED WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STEARIC ACID, LEAD STEARATE, AND ZINC STEARATE AND (2) AN OUTER WATER-IMPERMEABLE MEMBRANE.
Inventors
- 👤 Ival O Salyer
- 👤 James L Schwendeman
- 👤 Charles E Mcclung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:19
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; C; C08; C08J; C08J9/00; C08J9/36; C08J9/365; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |