Patent US3484916A successfully refreshed from Google Patents.
US3484916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making non-woven fabric from plies of plastic
Assignee: Hercules LLC
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Filing: 1967-03-01
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Granted: 1969-12-23
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Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Paul L Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:52
CPC Classifications
D; D04; D04H; D04H13/00; D04H18/00; D04H18/02; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/635; Y10T442/636; Y10T442/643; Y10T442/659; Y10T442/666; Y10T442/667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |