Patent US2596737A successfully refreshed from Google Patents.
US2596737A
Expired / Lapsed
US
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Styrenated products
Assignee: Shell Development Co
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Filing: 1950-10-13
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Granted: 1952-05-13
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Expires: 1970-10-13
Abstract
No abstract record available.
Inventors
- 👤 Roy W H Tess
- 👤 Robert H Jakob
- 👤 Theodore F Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:41
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F299/00; C08F299/02; C08F299/026; C09; C09D; C09D151/00; C09D151/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN INTERPOLYMER OF A MONOARYL-2-ALKENE-1 CONTAINING UP TO 4 CARBON ATOMS IN THE ALKENE GROUP, AND AN OLEFINICALLY UNSATURATED FATTY ACID POLYESTER OF AN ESTERIFIABLE GLYCERYL POLYETHER OF A DIHYDRIC PHENOL HAVING ALTERNATING GLYCERYL RADICALS AND THE HYDROCARBON RADICALS OF THE PHENOL UNITED IN A CHAIN BY EITHER OXYGEN ATOMS BETWEEN SAID RADICALS, WHICH ACID CONTAINS 12 TO 22 CARBON ATOMS AND HAS AN IODINE VALUE OF 110 TO 400, AND WHICH POLYESTER CONTAINS AT LEAST THREE ACYLOXY GROUPS OF THE FATTY ACID JOINED TO THE GLYCERYL RADICALS OF THE POLYESTHER, SAID INTERPOLYMER CONTAINING 10% TO 72% BY WEIGHT OF POLYMERIZED MONARYLALKENE.
Claim 2
Dependent Claim
102 words
AN INTERPOLYMER OF A MONOARYL-2-ALKENE-1 CONTAINING UP TO 4 CARBON ATOMS IN THE ALKENE GROUP, AND AN OLEFINICALLY UNSATURATED FATTY ACID POLYESTER OF AN ESTERIFIABLE GLYCERYL POLYETHER OF A DIHYDRIC PHENOL HAVING ALTERNATING GLYCERYL RADICALS AND THE HYDROCARBON RADICALS OF THE PHENOL UNITED IN A CHAIN BY EITHER OXYGEN ATOMS BETWEEN SAID RADICALS, WHICH ACID CONTAINS 12 TO 22 CARBON ATOMS AND HAS AN IODINE VALUE OF 110 TO 400, AND WHICH POLYESTER CONTAINS AT LEAST THREE ACYLOXY GROUPS OF THE FATTY ACID JOINED TO THE GLYCERYL RADICALS OF THE POLYESTHER, SAID INTERPOLYMER CONTAINING 10% TO 72% BY WEIGHT OF POLYMERIZED MONARYLALKENE.
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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |