US3725121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable pressure-sensitive adhesive tape with polypropylene backing
Assignee: Permacel
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Filing: 1971-04-09
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Granted: 1973-04-03
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Expires: 1991-04-09
Abstract
Abstract A HEAT RESISTANT POLYPROPYLENE BACKED ACRYLATE PRESSURE-SENSITIVE ADHESIVE TAPE WHEREIN THE ARCYLATE ADHESIVE IS MODIFIED BY THE ADDITION OF 5-25 PERCENT OF A PHENOL FORMALDEHYDE RESIN PRIOR TO COATING THE POLYPROPYLENE BACKING.
Inventors
- 👤 A Fournier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; C09J7/243; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L61/00; C08L61/04; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2874; Y10T428/2878; Y10T428/2887; Y10T428/2891
Claims Analysis
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |