US3029265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxy amino ethers and acylation products thereof
Assignee: Zeneca Inc
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Filing: 1957-04-23
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Granted: 1962-04-10
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Expires: 1977-04-23
Abstract
No abstract record available.
Inventors
- 👤 John D Zech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A PROCESS COMPRISING THE STEPS OF (1) AMINATING THE CONDENSATION PRODUCTS OF SORBITOL AND EPICHLOROHYDRIN WITH A BASIC NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA, REACTIVE PRIMARY ALKYL MONOAMINE, REACTIVE PRIMARY HYDROXY LOWER ALKYL MONOAMINE, REACTIVE PRIMARY CYCLO ALKYL MONOAMINE, REACTIVE PRIMARY POLYHYDROXY LOWER ALKYL MONOAMINE, AND LOWER ALKYLENE POLYAMINES CONTAINING FROM 2 TO 3 AMINO NITROGEN ATOMS AND AT LEAST 2 AMINO HYDROGEN ATOMS PER MOLECULE; (2) LIBERATING POLYHYDROXY AMINO ETHER CONDENSATION PRODUCTS BY NEUTRALIZING THE PRODUCT OF STEP 1 WITH AN ALKALI; (3) AND THEREAFTER ACYLATING THE POLYHYDROXY AMINO ETHER CONDENSATION PRODUCTS OF STEP 2 TO FORM A FATTY ACID AMIDE.
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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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |