US2664414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monomers and polymers of unsaturated thioethers
Assignee: Shell Development Co
•
Filing: 1952-03-08
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Granted: 1953-12-29
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Expires: 1972-03-08
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 George W Conklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:17
CPC Classifications
C; C07; C07C; C07C321/00; C08; C08F; C08F28/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A COPOLYMER OF 3,6-DITHIA-1,7-OCTADIENE WITH ANOTHER POLYMERIZABLE ORGANIC COMPOUND HAVING AN ALIPHATIC GROUP OF TWO CARBON ATOMS WHICH ARE CONNECTED TOGETHER BY AN OLEFINIC LINKAGE CAPABLE OF UNDERGOING ADDITION POLYMERIZATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |