Patent US3873885A successfully refreshed from Google Patents.
Patent US1242592A successfully refreshed from Google Patents.
US1242592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing phenolic condensation compounds.
Assignee: Redmanol Chemical Products Co
•
Filing: 1916-06-19
•
Granted: 1917-10-09
•
Expires: 1936-06-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence V Redman
- 👤 Archie J Weith
- 👤 Frank P Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:28
CPC Classifications
C; C08; C08G; C08G8/00; C08L; C08L85/00; C08L85/02
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) | 1920-10-08 | 1921-04-09 | 1921-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-08 | 1925-04-09 | 1925-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-08 | 1929-04-09 | 1929-10-09 | $7700.00 | Window Closed / Lapsed |