US2678308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified aminoplast resins
Assignee: Wyeth Holdings LLC
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Filing: 1952-06-11
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Granted: 1954-05-11
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Expires: 1972-06-11
Abstract
No abstract record available.
Inventors
- 👤 Suen Tzeng Jiueq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A MOLDING COMPOSITION COMPRISING AN AMINOPLAST RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE-FORMALDEHYDE RESIN AND A UREA-FORMALDEHYDE RESIN AND BETWEEN ABOUT 2% AND 15% BY WEIGHT OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
34 words
A MOLDING COMPOSITION COMPRISING AN AMINOPLAST RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE-FORMALDEHYDE RESIN AND A UREA-FORMALDEHYDE RESIN AND BETWEEN ABOUT 2% AND 15% BY WEIGHT OF A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |