US3522141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buoyant fibers comprising grafted chelating polymers
Assignee: Individual
•
Filing: 1967-01-03
•
Granted: 1970-07-28
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Gaetano F D'alelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:03
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; C08F20/10; C08F20/34; C08F255/00; C08F255/02; C08F291/00; D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |