US2815532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinneret mixing element
Assignee: Akzo Nobel UK PLC
•
Filing: 1953-05-25
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Granted: 1957-12-10
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Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Richard H Braunlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:51
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/065; B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; Y; Y10; Y10S; Y10S425/00; Y10S425/049; Y10S425/217; Y10S57/00; Y10S57/905; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1112066A
Cited
US1955825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |