US2612679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filaments containing fillers
Assignee: Individual
•
Filing: 1951-08-21
•
Granted: 1952-10-07
•
Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Ladisch Rolf Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; C; C03; C03B; C03B37/00; C03B37/01; C03B37/06; C03B37/075; C03C; C03C13/00; C03C14/00; C03C14/004; D01D5/253; D01F; D01F1/00; D01F1/02; D01F1/10; C03C2214/00; C03C2214/04; C03C2214/08; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2964; Y10T428/2967; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |