US2494095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid-curing thermosetting resin compositions, processes of curing same, and products thereof
Assignee: Wyeth Holdings LLC
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Filing: 1945-04-04
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Granted: 1950-01-10
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Expires: 1965-04-04
Abstract
No abstract record available.
Inventors
- 👤 Hull Washington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1535; C08K5/1539; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
A COMPOSITION COMPRISING A POLYMERIZABLE, ACID-CURING, THERMOSETTING RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE-FORMALDEHYDE AND UREA-FORMALDEHYDE RESINS AND 0.05-5% ENDOMETHYLENE TETRAHYDROPHTHALIC ANHYDRIDE BASED ON THE RESIN CONTENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |