US2620316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soya protein paper coating containing methylated melamine formaldehyde resin
Assignee: Wyeth Holdings LLC
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Filing: 1949-08-20
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Granted: 1952-12-02
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Expires: 1969-08-20
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Ritson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:50
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/50; D21H19/62; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN AQUEOUS LIQUID COATING COMPOSITION WHICH COMPRISES SOYA PROTEIN AND ABOUT 4% BY WEIGHT, BASED ON THE WEIGHT OF THE SOYA PROTEIN, OF A WATER SOLBLE METHYLATED MELAMINE-FORMALDEHYDE WHICH WILL HEAT CURE AT MODERATELY LOW TEMPERATURES TO A WATER INSOLUBLE CONDITION.
Claim 2
Dependent Claim
41 words
AN AQUEOUS LIQUID COATING COMPOSITION WHICH COMPRISES SOYA PROTEIN AND ABOUT 4% BY WEIGHT, BASED ON THE WEIGHT OF THE SOYA PROTEIN, OF A WATER SOLBLE METHYLATED MELAMINE-FORMALDEHYDE WHICH WILL HEAT CURE AT MODERATELY LOW TEMPERATURES TO A WATER INSOLUBLE CONDITION.
References Cited (Backward Citations)
AU1202128A
Cited
US1877202A
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US2053850A
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US2133335A
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GB480316A
Cited
US2321938A
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US2315402A
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US2453752A
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US2403465A
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US2469408A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |