US3645956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid mercapto-terminated polymer sealant compositions
Assignee: 3M Co
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Filing: 1967-09-15
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Granted: 1972-02-29
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Expires: 1987-09-15
Abstract
Abstract A ONE-PART, CAN STABLE, MERCAPTO-TERMINATED POLYMERBASED SEALANT CONTAINING INGREDIENTS WHICH ENHANCE THE TRANSMISSION OF MOISTURE VAPOR THROUGH THE SEALANT BODY TO IMPROVE THE CURE RATE. THE INGREDIENTS INCLUDE A LATENT OXIDATIVE CURING AGENT, A LATENT HYGROSCOPIC ACCELERATING AGENT, AND A MATERIAL WHICH PROMOTES THE MOVEMENT OF WATER THROUGH THE SEALANT MATRIX.
Inventors
- 👤 John I Doughty
- 👤 Philip G Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:33
CPC Classifications
C; C08; C08L; C08L81/00
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |