Patent US2619480A successfully refreshed from Google Patents.
US2619480A
Expired / Lapsed
US
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Melamine-formaldehyde resinous composition containing acetyl benzamide
Assignee: Wyeth Holdings LLC
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Filing: 1951-09-15
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Granted: 1952-11-25
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Expires: 1971-09-15
Abstract
No abstract record available.
Inventors
- 👤 Lindenfelser Richard
- 👤 Kilthau Martha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOSITON COMPRISING A MELAMINEFIR,ALDEHYDE RESIN AND, AS A LATENT CATALYST THEREFOR, ACETYLBENZAMIDE.
Claim 2
Dependent Claim
13 words
A COMPOSITON COMPRISING A MELAMINEFIR,ALDEHYDE RESIN AND, AS A LATENT CATALYST THEREFOR, ACETYLBENZAMIDE.
References Cited (Backward Citations)
US2376725A
Cited
US2539349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |