US2818399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethlenically unsaturated alkyd resin copolymerized with n-vinyl-2-oxazolidone and process for making same
Assignee: Wyeth Holdings LLC
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Filing: 1955-01-13
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Granted: 1957-12-31
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Expires: 1975-01-13
Abstract
No abstract record available.
Inventors
- 👤 Erhart K Drechsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:41
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/22; C07D263/24; Y; Y10; Y10S; Y10S525/00; Y10S525/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) NVINYL-2-OXAZOLIDONE AND (2) A POLYMERIZABLE UNSATURATED ALKYD RESIN CONTAINING A PLURALITY OF POLYMERIZABLY REACTIVE ALPHA, BETA-ENAL GROUPS.
Claim 2
Dependent Claim
22 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) NVINYL-2-OXAZOLIDONE AND (2) A POLYMERIZABLE UNSATURATED ALKYD RESIN CONTAINING A PLURALITY OF POLYMERIZABLY REACTIVE ALPHA, BETA-ENAL GROUPS.
References Cited (Backward Citations)
US2528168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |