US2347358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxylation of acetylenic compounds
Assignee: Research Corp
•
Filing: 1942-03-16
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Granted: 1944-04-25
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Expires: 1962-03-16
Abstract
No abstract record available.
Inventors
- 👤 Nicholas A Milas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:42
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/285; C07C45/00; C07C45/27; C07C45/28; C07C45/51; C07C45/511; C07C45/512; C07C45/515; C07C45/52; C07C49/00; C07C49/04; C07C49/17
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) | 1947-04-25 | 1947-10-25 | 1948-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-25 | 1951-10-25 | 1952-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-25 | 1955-10-25 | 1956-04-25 | $7700.00 | Window Closed / Lapsed |