US2687407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of resins from diallylidene pentaerythritol and a polyhydroxy alcohol
Assignee: Dynamit Nobel AG
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Filing: 1951-07-18
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Granted: 1954-08-24
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Expires: 1971-07-18
Abstract
No abstract record available.
Inventors
- 👤 Orth Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
C; C08; C08G; C08G4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
PROCESS FOR THE PRODUCING OF CASTING RESINS COMPRISING THE STEPS OF REACTING DIALLYLIDENE PENTAERYTHRITOL WITH AT LEAST ONE POLYHYDROXY ALCOHOL IN THE PRESENCE OF A CATALYST OF ACID NATURE, SAID ALCOHOL CONTAINING AT LEAST TWO AND NOT MORE THAN SIX HYDROXY GROUPS, AT LEAST TWO HYDROXY GROUPS BEING SEPARATED FROM ONE ANOTHER BY A CARBON BRIDGE OF AT LEAST THREE CARBON ATOMS.
Claim 2
Dependent Claim
62 words
PROCESS FOR THE PRODUCING OF CASTING RESINS COMPRISING THE STEPS OF REACTING DIALLYLIDENE PENTAERYTHRITOL WITH AT LEAST ONE POLYHYDROXY ALCOHOL IN THE PRESENCE OF A CATALYST OF ACID NATURE, SAID ALCOHOL CONTAINING AT LEAST TWO AND NOT MORE THAN SIX HYDROXY GROUPS, AT LEAST TWO HYDROXY GROUPS BEING SEPARATED FROM ONE ANOTHER BY A CARBON BRIDGE OF AT LEAST THREE CARBON ATOMS.
References Cited (Backward Citations)
DE664271C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |