Patent US1870600A successfully refreshed from Google Patents.
Patent US2028265A successfully refreshed from Google Patents.
Patent US1695150A successfully refreshed from Google Patents.
Patent US4315375A successfully refreshed from Google Patents.
Patent US1862000A successfully refreshed from Google Patents.
US1862000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of para-phenylphenol
Assignee: Dow Chemical Co
•
Filing: 1930-07-16
•
Granted: 1932-06-07
•
Expires: 1950-07-16
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Shailer L Bass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:31
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-06-07 | 1935-12-07 | 1936-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-07 | 1939-12-07 | 1940-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-07 | 1943-12-07 | 1944-06-07 | $7700.00 | Window Closed / Lapsed |