US2445181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers and copolymers of acenaphthylene
Assignee: General Electric Co
•
Filing: 1944-09-26
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Granted: 1948-07-13
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Expires: 1964-09-26
Abstract
No abstract record available.
Inventors
- 👤 Harry F Miller
- 👤 Ralph G Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:03
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/32; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/14; C08F226/00; C08F226/06; C08F226/12; C08L; C08L25/00; C08L25/02; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; C08F212/32; C08L2205/00; C08L2205/02; C08L25/04; C08L25/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2114233A
Cited
US2317878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |