US3828045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diglycidyl ethers of five and six membered n-heterocyclic compounds
Assignee: Novartis AG
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Filing: 1971-01-26
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Granted: 1974-08-06
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Expires: 1991-01-26
Abstract
Abstract NEW DIGLYCIDYL ETHER OF MONONUCLEAR, FIVE-MEMBERED OR SIX-MEMBERED, UNSUBSTITUTED OR SUBSTITUTED N-HETEROCYCLIC COMPOUNDS WITH TWO NH GROUPS IN THE MOLECULE, CONTAINING BUTENE OXIDE AS AN ADDUCT, PRODUCED BY REACTTION OF MONONUCLEAR, FIVE-MEMBERED OR SUIX-MEMBERED, UNSUBSTITUTED OR SUBSTITUTED N-HETEROCYCLIC COMPOUNDS, FOR EXAMPLE HYDANTION, BARBITURIC ACID, URACIL, DIHYROURACIL, PARABANIC ACID AND THE CORRESPONDING DERIVATES, WITH BUTENE OXIDE, FOR EXAMPLE 1,2-BUTENE OXIDE, TO GIVE MONOALCOHOL OR DIACOHOLS, AND SUBSEQUENT GLYCIDYLATION OF THE OH GROUPS OR OF THE OH GROUP AND THE NH GROUP TO GIVE THE CORRESPONDING GLYCIDYL ETHERS.
Inventors
- 👤 H Batzer
- 👤 J Habermeier
- 👤 D Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26; B32B2262/00; B32B2262/10; B32B2262/101
Claims Analysis
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |