Patent US2039191A successfully refreshed from Google Patents.
US2039191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber derivatives
Assignee: RUBBER PRODUCERS RES ASS
•
Filing: 1935-01-14
•
Granted: 1936-04-28
•
Expires: 1955-01-14
Abstract
No abstract record available.
Inventors
- 👤 Schidrowitz Philip
- 👤 Redfarn Cyril Aubrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/142; C08J9/141; C08J2315/00; C08J2315/02
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) | 1939-04-28 | 1939-10-28 | 1940-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-28 | 1943-10-28 | 1944-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-28 | 1947-10-28 | 1948-04-28 | $7700.00 | Window Closed / Lapsed |