US2473016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing cut-growth rate of rubberlike butadienestyrene copolymer
Assignee: Wyeth Holdings LLC
•
Filing: 1945-01-29
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Granted: 1949-06-14
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Expires: 1965-01-29
Abstract
No abstract record available.
Inventors
- 👤 Arnold R Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:28
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08L; C08L9/00; C08L9/06; C08K5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2287774A
Cited
US2395506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |