Patent US2130525A successfully refreshed from Google Patents.
US2130525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy alkyl ethers of hydrogenated hydroxy diphenyl compounds
Assignee: Dow Chemical Co
•
Filing: 1937-02-20
•
Granted: 1938-09-20
•
Expires: 1957-02-20
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Coleman
- 👤 John W Zemba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C07C41/00; C07C41/01; C07C41/02; C07C41/03; C07C41/16; C07C2601/00; C07C2601/12; C07C2601/14
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) | 1941-09-19 | 1942-03-21 | 1942-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-19 | 1946-03-21 | 1946-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-19 | 1950-03-21 | 1950-09-20 | $7700.00 | Window Closed / Lapsed |