US2259524A
Expired / Lapsed
US
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Method for polymerizing and molding unsaturated methylene compounds
Assignee: EIDP Inc
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Filing: 1940-02-23
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Granted: 1941-10-21
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Expires: 1960-02-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Kistler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:34
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/003; B29C39/006; B01; B01J; B01J19/00; B01J19/24; C; C08; C08F; C08F2/00; C08F2/02; C08F36/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00099; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/939
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) | 1944-10-20 | 1945-04-21 | 1945-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-20 | 1949-04-21 | 1949-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-20 | 1953-04-21 | 1953-10-21 | $7700.00 | Window Closed / Lapsed |