US2345632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides
Assignee: National Oil Products Co
•
Filing: 1939-05-20
•
Granted: 1944-04-04
•
Expires: 1959-05-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Robinson
- 👤 Maurice J Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:59
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D06M13/02; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/044; C10M2217/045; C10N; C10N2040/00; C10N2040/46
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) | 1947-04-04 | 1947-10-04 | 1948-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-04 | 1951-10-04 | 1952-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-04 | 1955-10-04 | 1956-04-04 | $7700.00 | Window Closed / Lapsed |