US2684343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic material with alkylated polyalkylol melamine resins
Assignee: Wyeth Holdings LLC
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Filing: 1950-11-17
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Granted: 1954-07-20
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Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 James K Dixon
- 👤 Norman T Woodberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:27
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08L1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS WHICH COMPRISES ADDING TO A VISCOSE DOPE A RESIN SELECTED FROM THE GROUP CONSISTING OF ALKYLATED TRIMETHYLOL MELAMINES CONTAINING AT LEAST 10 CARBON ATOMS IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND ALKYLATED POLYMETHYLOL MELAMINES CONTAINING FROM 4 TO 6 METHYLENEOXY GROUPS IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND REGENERATING THE CELLULOSE WHEREBY A PRODUCT OF DECREASED WATER ABSORPTION IS OBTAINED.
Claim 2
Dependent Claim
74 words
A PROCESS WHICH COMPRISES ADDING TO A VISCOSE DOPE A RESIN SELECTED FROM THE GROUP CONSISTING OF ALKYLATED TRIMETHYLOL MELAMINES CONTAINING AT LEAST 10 CARBON ATOMS IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND ALKYLATED POLYMETHYLOL MELAMINES CONTAINING FROM 4 TO 6 METHYLENEOXY GROUPS IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND REGENERATING THE CELLULOSE WHEREBY A PRODUCT OF DECREASED WATER ABSORPTION IS OBTAINED.
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |