Patent US2542484A successfully refreshed from Google Patents.
US2542484A
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US
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Alkali resistant phenolic molding powders and laminate
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-12-04
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Granted: 1951-02-20
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Expires: 1968-12-04
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Debing
- 👤 Rodney M Huck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:58
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
AN ALKALI-RESISTANT LIMINATE PREPARED BY IMPREGNATING A CELLULOSIC WEB WITH A WATE SOLUTION OF WATER-SOLUBLE FUSIBLE MELAMINE-FORMALDEHYDE CONDENSATION PRODUCT, DRYING SAID WEB AND CURING SAID MELAMINE RESIN IN THE WEB TO THE INSOLUBLE INFUSIBLE STATE, THE AMOUNT OF MELAMINE RESIN BEING EQUIVALENT TO FROM 3% TO 10% BY WEIGHT TO CELLULOSIC WEB, AND THEN LAMINATING SECTIONS OF SAID WEB TOGETHER WITH AN ALKALI-RESISTANT PHENOLIC LAMINATING VERNISH PREPARED FROM FORMALDEHYDE, AN AROMATIC AMINE TAKEN FROM THE GROUP CONSISTING OF ANILINE, TOLUIDINE AND XYLIDINES AND AT LEAST ONE COMPOUND TAKEN FROM THE GROUP CONSISTING OF PHENOL, CRESOLS AND XYLENOLS.
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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |