US2244284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric agents and method of making same
Assignee: Dow Chemical Co
•
Filing: 1937-02-03
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Granted: 1941-06-03
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Expires: 1957-02-03
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Gerald H Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:31
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/24; C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/269; C07C25/00; C07C25/18; C09; C09K; C09K5/00; C09K5/08
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) | 1944-06-02 | 1944-12-02 | 1945-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-02 | 1948-12-02 | 1949-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-02 | 1952-12-02 | 1953-06-03 | $7700.00 | Window Closed / Lapsed |