Patent US2289775A successfully refreshed from Google Patents.
US2289775A
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US
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Protein-polyamide mixture
Assignee: EIDP Inc
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Filing: 1940-06-14
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Granted: 1942-07-14
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Expires: 1960-06-14
Abstract
No abstract record available.
Inventors
- 👤 Graves George De Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L; C08L77/00; C08L77/02; C08L77/06; C08L89/00; C08L89/005; C08L89/04; C08L89/06; C09; C09D; C09D177/00; C09D177/02; C09D177/06; C09D189/00; C09D189/005; D01F4/00; D01F6/00; D01F6/58; D01F6/60; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 0
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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) | 1945-07-13 | 1946-01-12 | 1946-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-13 | 1950-01-12 | 1950-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-13 | 1954-01-12 | 1954-07-14 | $7700.00 | Window Closed / Lapsed |