Patent US2582357A successfully refreshed from Google Patents.
US2582357A
Expired / Lapsed
US
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Polyvinyl alcohol gels with bis-1, 3, 5-triazine compounds
Assignee: GAF Chemicals Corp
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Filing: 1949-01-07
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Granted: 1952-01-15
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Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 Donald E Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A THERMO REVERSIBLE GEL COMPOSED OF WATER AND POLYMENYL ALCOHOL, MIXED WITH A GELLING AMOUNT OF A SUBSTANTIALLY COLORLESS 1,3,5-TRIAZINE DERIVATIVE OF THE FORMULA:
Claim 2
Dependent Claim
24 words
A THERMO REVERSIBLE GEL COMPOSED OF WATER AND POLYMENYL ALCOHOL, MIXED WITH A GELLING AMOUNT OF A SUBSTANTIALLY COLORLESS 1,3,5-TRIAZINE DERIVATIVE OF THE FORMULA:
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |