US2898634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing foamed plastic material
Assignee: Sterling Alderfer Co
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Filing: 1957-01-29
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Granted: 1959-08-11
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Expires: 1977-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sterling W Alderfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/334; B29C44/321; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/133; B29C66/20; B29C66/21; B29C66/23; B29C66/232; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/49; B29C66/496; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81433; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/83415; B29C66/8351; B29C66/83511; B29C66/90; B29C66/91; B29C66/919; B29C66/9192; B29C66/91921; B29C66/91931; B29C66/91935; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141405A
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US2340260A
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US2385229A
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FR1010631A
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US2718105A
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US2690987A
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US2767461A
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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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |