Patent US3549537A successfully refreshed from Google Patents.
Patent US2915485A successfully refreshed from Google Patents.
US2915485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing flexible resinified products from polyepoxides and resulting products
Assignee: Shell Development Co
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Filing: 1955-09-01
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Granted: 1959-12-01
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Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Edward C Shokal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:13
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/18; C08G59/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PREPARING FLEXIBLE RESINIFIED PRODUCTS FROM GLYCIDYL POLYETHERS OF POLYHYDRIC COMPOUNDS OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS WHICH COMPRISES ADDING A CROSS-LINKING AGENT HAVING AT LEAST THREE ACTIVE HYDROGENS AND A LONG-CHAIN MONOFUNCTIONAL ORGANIC COMPOUND HAVING AT LEAST 12 CARBON ATOMS, AND POSSESSING A SINGLE FUNCTIONAL GROUP REACTIVE WITH EPOXY GROUPS AND SELECTED FROM THE GROUP CONSISTING OF -COOH, -SH, -SO3H, -NH2,
Claim 2
Dependent Claim
68 words
A PROCESS FOR PREPARING FLEXIBLE RESINIFIED PRODUCTS FROM GLYCIDYL POLYETHERS OF POLYHYDRIC COMPOUNDS OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS WHICH COMPRISES ADDING A CROSS-LINKING AGENT HAVING AT LEAST THREE ACTIVE HYDROGENS AND A LONG-CHAIN MONOFUNCTIONAL ORGANIC COMPOUND HAVING AT LEAST 12 CARBON ATOMS, AND POSSESSING A SINGLE FUNCTIONAL GROUP REACTIVE WITH EPOXY GROUPS AND SELECTED FROM THE GROUP CONSISTING OF -COOH, -SH, -SO3H, -NH2,
References Cited (Backward Citations)
US2681901A
Cited
US2637716A
Cited
US2712535A
Cited
US2627483A
Cited
US2731444A
Cited
US2801229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |