US2555775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of polyallyl alcohol
Assignee: Shell Development Co
•
Filing: 1943-08-11
•
Granted: 1951-06-05
•
Expires: 1963-08-11
Abstract
No abstract record available.
Inventors
- 👤 David E Adelson
- 👤 Jr Harold F Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:32
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
AN ESTER OF AN UNSATURATED HIGHER FATTY ACID HAVING AN IODINE VALUE OF AT LEAST 120 AND A POLYALLYL ALCOHOL CONSISTING OF AT LEAST THREE ALLYL ALCOHOL MONOMER UNITS PER MOLECULE AND HAVING A CORRESPONDING NUMBER OF HYDROXYL RADICALS, THE MONOMER UNITS BEING JOINED TOGETHER EXCLUSIVELY BY CARBON-TO-CARBON BONDS.
References Cited (Backward Citations)
US2366667A
Cited
US2376224A
Cited
US2378827A
Cited
US1925063A
Cited
US2054019A
Cited
US2164188A
Cited
US2223558A
Cited
US2275494A
Cited
US2307047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |