US3508991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making bonded batts of microcellular filaments
Assignee: EIDP Inc
•
Filing: 1966-12-28
•
Granted: 1970-04-28
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Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Malak E Yunan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:43
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2464301A
Cited
US3043733A
Cited
US3227664A
Cited
US3418196A
Cited
US3344221A
Cited
US3278954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |