US3611733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing openings
Assignee: Dow Chemical Co
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Filing: 1969-10-06
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Granted: 1971-10-12
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Expires: 1989-10-06
Abstract
Abstract AN IMPROVED METHOD OF SEALING OFF AN OPENING, EITHER TEMPORARILY OR MORE-OR-LESS PREMANENTLY, INHIBIT THE PASSAGE OF AQUEOUS FLUIDS WHICH COMPRISES EMPLACING IN THE OPENING A FLUID AQUEOUS SALT-NATURAL POLYMER COMPOSITION WHICH INDIGENOUSLY SETS TO A FLUID-TIGHT RESILIENT SOLID HAVING PREDETERMINED LONEVITY DEPENDENT UPON THE PH VALUE OF THE FLUID COMPOSITION.
Inventors
- 👤 Louis H Eilers
- 👤 Christ F Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/512; C09D; C09D5/00; C09D5/34; C09J; C09J105/00; C09K3/00; C09K3/12; C09K8/514
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |