US2868765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride with alkali metal phosphate and organotin salt
Assignee: Ethyl Corp
•
Filing: 1955-07-06
•
Granted: 1959-01-13
•
Expires: 1975-07-06
Abstract
No abstract record available.
Inventors
- 👤 Albert J Haefner
- 👤 Charles W Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:45
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1932889A
Cited
US2218645A
Cited
US2482038A
Cited
US2647296A
Cited
US2654718A
Cited
US2604459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |