US2453308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl butyral composition
Assignee: Monsanto Chemicals Ltd
•
Filing: 1943-07-21
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Granted: 1948-11-09
•
Expires: 1963-07-21
Abstract
No abstract record available.
Inventors
- 👤 Richard D Dunlop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34922; C08K5/49; C08K5/51; C08K5/52; C08K5/521; Y; Y10; Y10S; Y10S215/00; Y10S215/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20430E
Cited
US2197357A
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US2243560A
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US2274447A
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US2368451A
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US2326698A
Cited
US2329622A
Cited
US2423565A
Cited
US2396098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |