US2925403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New polyepoxides from epoxy-substi-tuted cycloaliphatic alcohols, their preparation and polymers
Assignee: Shell Development Co
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Filing: 1956-05-29
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Granted: 1960-02-16
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Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Edward C Shokal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:40
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/28; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A POLYEPOXIDE WHICH IS AN ETHER OF (1) AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF MONOCYCLIC MONOHYDRIC VIC-EPOXY-SUBSTITUTED CYCLOALKANOLS AND CYCLOALKYLALKANOLS CONTAINING FROM 5 TO 7 CARBONS IN THE RING WHEREIN THE OXIRANE OXYGEN IS SUBSTITUTED ON THE NUCLEUS AND (2) A VIC-EPOXY-SUBSTITUTED MONOHYDRIC ALKANOL OF AT LEAST 3 CARBON WHEREIN THE OXIRANE OXYGEN IS TERMINALLY SITUATED.
Claim 2
Dependent Claim
58 words
A POLYEPOXIDE WHICH IS AN ETHER OF (1) AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF MONOCYCLIC MONOHYDRIC VIC-EPOXY-SUBSTITUTED CYCLOALKANOLS AND CYCLOALKYLALKANOLS CONTAINING FROM 5 TO 7 CARBONS IN THE RING WHEREIN THE OXIRANE OXYGEN IS SUBSTITUTED ON THE NUCLEUS AND (2) A VIC-EPOXY-SUBSTITUTED MONOHYDRIC ALKANOL OF AT LEAST 3 CARBON WHEREIN THE OXIRANE OXYGEN IS TERMINALLY SITUATED.
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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |