US3507683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for applying heat-sealable polyamic acid,polyamide-imide and aromatic polyamide compositions to a synthetic polymer fibrid paper substrate
Assignee: EIDP Inc
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Filing: 1967-06-22
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Granted: 1970-04-21
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Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
C; C09; C09D; C09D179/00; C09D179/04; C09D179/08; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2999788A
Cited
US3100721A
Cited
US3179614A
Cited
US3190856A
Cited
US3179633A
Cited
US3238055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |