US2340913A
Expired / Lapsed
US
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Method of preparing prolamine plastic compositions
Assignee: Cerestar USA Inc
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Filing: 1940-11-04
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Granted: 1944-02-08
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Expires: 1960-11-04
Abstract
No abstract record available.
Inventors
- 👤 Harry M Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:25
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/50; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/05; C08K5/053; C08L; C08L5/00; C08L89/00; C08L93/00; C08L93/02; C08L93/04; C09; C09D; C09D105/00; C09D189/00; C09D193/00; C09D193/04; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K2003/2237; C08K2003/2241
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) | 1947-02-07 | 1947-08-09 | 1948-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-02-07 | 1951-08-09 | 1952-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-02-07 | 1955-08-09 | 1956-02-08 | $7700.00 | Window Closed / Lapsed |