Patent US3676202A successfully refreshed from Google Patents.
US3676202A
Expired / Lapsed
US
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Pressure-sensitive adhesive tape
Assignee: Permacel
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Filing: 1969-10-07
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Granted: 1972-07-11
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Expires: 1989-10-07
Abstract
Abstract A NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE TAPE HAVING SUPERIOR PROPERTIES, WHEREIN THE ADHESIVE IS BASED UPON THE COMBINATION OF A PARTICULAR TYPE OF ELASTOMERIC AND THERMOPLASTIC BLOCK POLYMER WITH A TACKIFIER COMPRISING A MAJOR PROPORTION OF POLYMERIZED PIPERYLENE OR ISOPRENE AND PIPERYLENE STRUCTURES. THE BLOCK POLYMER HAS A STRUCTURE ABA, WHEREIN A IS A THERMOPLASTIC POLYMER BLOCK OF A VINYL ARENE AND POSSESSES A GLASS TRANSITION TEMPERATURE ABOVE NORMAL ROOM TEMPERATURE AND B IS AN ELASTOMERIC POLYMER BLOCK OF ISOPRENE, AND THE THERMOPLASTIC A BLOCK COMPOSES ABOUT 8-35 PERCENT BY WEIGHT OF THE BLOCK POLYMER.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:27
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/387; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2883
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |