US3449486A
Expired / Lapsed
US
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Method for producing a thermally selfbonded low density nonwoven product
Assignee: EIDP Inc
•
Filing: 1967-05-31
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Granted: 1969-06-10
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Expires: 1987-05-31
Abstract
No abstract record available.
Inventors
- 👤 Rashmikant Maganlal Contractor
- 👤 Robert Evans Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:47
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2417453A
Cited
US2723935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |