US3759780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of sealing joints with sealant composition
Assignee: Covestro International SA
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Filing: 1971-07-09
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Granted: 1973-09-18
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Expires: 1991-07-09
Abstract
Abstract TAPES FOR SEALING WINDOWS IN AUTOMATIVE AND ARCHITECTURAL APPLICATIONS ARE FORMULATED FROM BUTYL RUBBER, A RUBBER PLASTICIZER, CARBON BLACK AND A THERMOPLASTIC TERPENE PHENOL-FORMALDEHYDE NOVOLAK RESIN. BY VIRTUE OF THE TERPENE PHENOLIC RESIN, THE SAG AND HEAT FLOW RESISTANCE OF THE FORMULATION IS CONSIDERABLY ENHACED.
Inventors
- 👤 A Rizzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:01
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; B; B60; B60J; B60J10/00; B60J10/30; B60J10/34; B60J10/70; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/28; C08L2666/54
Claims Analysis
Total Claims: 0
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |