US3557562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a flexible sealant
Assignee: Halliburton Co
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Filing: 1968-01-31
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Granted: 1971-01-26
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Expires: 1988-01-31
Abstract
Abstract THIS INVENTION RELATES TO A FLEXIBLE SEALANT. THE SEALANT COMPRISES AN ACRYLAMIDE MONOMER, A POLYFUNCTIONAL CROSSLINKING AGENT SUCH AS AN ALKYLENE BISARYLAMIDE, A HYDROGEN BONDING SOLVENT SUCH AS A GLYCOL, A FILLER WHICH WILL HYDROGEN BOND TO THE SOLVENT AND TO THE POLYMERIZED ACRYLAMIDE SUCH AS SILICA, AND A CATALYST WHICH WILL POLYMERIZE THE MONOMER. THE SEALANT IS PARTICULARY USEFUL AS A PLUG TO PREVENT ESCAPE OF RADIOCATIVE MATERIAL RESULTING FROM AN UNDERGROUND EXPLOSION.
Inventors
- 👤 Homer C Mclaughlin Jr
- 👤 Ronney R Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:34
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40; C09K17/48; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F265/00; C08F265/10
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) | 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 |