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US2247402A
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Aralkyl phenol and method of making it
Assignee: Dow Chemical Co
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Filing: 1939-03-24
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Granted: 1941-07-01
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Expires: 1959-03-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph P Perkins
- 👤 Bryner Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:59
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/24; C07C39/367; C07C37/00; C07C37/11; C07C37/14; C07C39/12; C07C39/15
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) | 1944-06-30 | 1944-12-30 | 1945-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-30 | 1948-12-30 | 1949-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-30 | 1952-12-30 | 1953-07-01 | $7700.00 | Window Closed / Lapsed |