Patent US3256226A successfully refreshed from Google Patents.
US3256226A
Expired / Lapsed
US
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Hydroxy polyether polyesters having terminal ethylenically unsaturated groups
Assignee: Hospitality Homes
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Filing: 1965-03-01
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Granted: 1966-06-14
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Fekete Frank
- 👤 Patrick J Keenan
- 👤 William J Plant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:39
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/66; C08G63/668; C08G63/676; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE POLYMERIZABLE POLYHYDROXY POLYESTER REACTION PRODUCT HAVING ETHYLENICALLY UNSATURATED TERMINAL GROUPS AND BEING ESSENTIALLY FREE OF UNREACTED EPOXY GROUPS, OF 0.5 TO 0.9 MOL DICARBOXYLIC ACID, 1.0 TO 0.2 MOL ETHYLENICALLY UNSATURATED MONOBASIC CARBOXYLIC ACID, AND ONE MOLE DIEPOXY COMPOUND HAVING NO SUBSTITUENT CAPABLE OF REACTING WITH -COOH RADICALS OTHER THAN HYDROXYL.
Claim 2
Dependent Claim
52 words
THE POLYMERIZABLE POLYHYDROXY POLYESTER REACTION PRODUCT HAVING ETHYLENICALLY UNSATURATED TERMINAL GROUPS AND BEING ESSENTIALLY FREE OF UNREACTED EPOXY GROUPS, OF 0.5 TO 0.9 MOL DICARBOXYLIC ACID, 1.0 TO 0.2 MOL ETHYLENICALLY UNSATURATED MONOBASIC CARBOXYLIC ACID, AND ONE MOLE DIEPOXY COMPOUND HAVING NO SUBSTITUENT CAPABLE OF REACTING WITH -COOH RADICALS OTHER THAN HYDROXYL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |