US2639277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melamine-formaldehyde resinous composition with filler
Assignee: Wyeth Holdings LLC
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Filing: 1951-10-23
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Granted: 1953-05-19
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Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Varela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
C; C09; C09J; C09J161/00; C09J161/20; C09J161/26; C09J161/28; C08; C08L; C08L2666/00; C08L2666/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A RESINOUS COMPOSITION HAVING DIMINISHED TOXICITY AT DECOMPOSITION TEMPERATURES CONSISTING OF FROM 35 TO 45% BY WEIGHT OF A MELAMINEFORMALDEHYDE RESIN AND FROM 65 TO 55% BY WEIGHT OF A FILLER, RESPECTIVELY, BASED ON THE TOTAL WEIGHT OF SAID COMPOSITION; WHEREIN SAID FILLER CONSISTS OF FROM 10 TO 20% BY WEIGHT OF CHINA CLAY AND FROM 90 TO 80% BY WEIGHT OF GLASS FIBERS, RESPECTIVELY, BASED ON THE TOTAL WIEGHT OF THE FILLER.
Claim 2
Dependent Claim
73 words
A RESINOUS COMPOSITION HAVING DIMINISHED TOXICITY AT DECOMPOSITION TEMPERATURES CONSISTING OF FROM 35 TO 45% BY WEIGHT OF A MELAMINEFORMALDEHYDE RESIN AND FROM 65 TO 55% BY WEIGHT OF A FILLER, RESPECTIVELY, BASED ON THE TOTAL WEIGHT OF SAID COMPOSITION; WHEREIN SAID FILLER CONSISTS OF FROM 10 TO 20% BY WEIGHT OF CHINA CLAY AND FROM 90 TO 80% BY WEIGHT OF GLASS FIBERS, RESPECTIVELY, BASED ON THE TOTAL WIEGHT OF THE FILLER.
References Cited (Backward Citations)
US2344733A
Cited
US2517906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |