US3792002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt pressure sensitive adhesives
Assignee: Bayer Pharma AG
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Filing: 1972-04-12
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Granted: 1974-02-12
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Expires: 1992-04-12
Abstract
Abstract HOT MELT PRESSURE SENSITIVE ADHESIVE COMPRISING (A) A POLYAMIDE RESIN, (B) A TACKIFIER, AND EITHER OR BOTH OF (C) A FURTHER POLYAMIDE OR POLYESTER AMIDE WHICH FUNCTIONS TO RETAIN TACK IN THE ADHESIVE OR (D) AN ETHYLENE/ VINYL ACETATE COPOLYMER. POLYAMIDE (A) COMPRISES ETHYLENE DIAMINE, CERTAIN ETHER DIAMINES, AND A POLYMERIC FATTY ACID. PREFERRED TACKIFIERS (B) ARE THE COLOPHONIUM RESINS, COMPONENT (C) IS FORMED BETWEEN A POLYAMINE OR HYDROXYLAMINE AND A POLYMERIC FATTY ACID.
Inventors
- 👤 B Krieger
- 👤 M Bolze
- 👤 M Drawert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:31
CPC Classifications
C; C09; C09J; C09J177/00; C09J177/06; C09J177/08; C08; C08L; C08L77/00; C08L77/06; C08L77/08
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |