Patent US2579985A successfully refreshed from Google Patents.
US2579985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded tableware articles and resins used to produce same
Assignee: Wyeth Holdings LLC
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Filing: 1951-01-17
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Granted: 1951-12-25
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Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Varela
- 👤 Ralph J Schupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:07
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/263; C08G12/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A THERMOSETTING, RESINOUS COMPOSITION, PARTICULARLY ADAPTED FOR MOLDING TABLEWARE ARTICLES HAVING IMPROVED COFFEE STAIN RESISTANCE, COMPRISING A BENZOGUANAMINE-MELAMINE-FORMALDEHYDE RESIN, WHEREIN THE MOL RATIO OF BENZOGUANAMINE TO MELAMINE IS WITHIN THE RANGE OF 1:3.3 TO 2:1, RESPECTIVELY, AND THE MOL RATIO OF BENZOGUANAMINE AND MELAMINE TO FORMALDEHYDE IS 1:1,5 TO 1:2.1, RESPECTIVELY.
Claim 2
Dependent Claim
51 words
A THERMOSETTING, RESINOUS COMPOSITION, PARTICULARLY ADAPTED FOR MOLDING TABLEWARE ARTICLES HAVING IMPROVED COFFEE STAIN RESISTANCE, COMPRISING A BENZOGUANAMINE-MELAMINE-FORMALDEHYDE RESIN, WHEREIN THE MOL RATIO OF BENZOGUANAMINE TO MELAMINE IS WITHIN THE RANGE OF 1:3.3 TO 2:1, RESPECTIVELY, AND THE MOL RATIO OF BENZOGUANAMINE AND MELAMINE TO FORMALDEHYDE IS 1:1,5 TO 1:2.1, RESPECTIVELY.
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |