US2549961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of blends of tertiary alkyl mercaptans in emulsion polymerization
Assignee: Phillips Petroleum Co
•
Filing: 1945-02-02
•
Granted: 1951-04-24
•
Expires: 1965-02-02
Abstract
No abstract record available.
Inventors
- 👤 Willie W Crouch
- 👤 Edwin G Marhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:49
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2209169A
Cited
US2384969A
Cited
US2396997A
Cited
US2378030A
Cited
US2416440A
Cited
US2401346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |