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US3029265A Expired / Lapsed US ⏱️ 0.0 years remaining

Polyhydroxy amino ethers and acylation products thereof

Assignee: Zeneca Inc
•
Filing: 1957-04-23
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Granted: 1962-04-10
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Expires: 1977-04-23
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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.

References Cited (Backward Citations)

US2069336A Cited
US2609370A Cited
US2525771A Cited
US2538072A Cited
US2581464A Cited
US2598213A Cited
US2589199A Cited
US2775604A Cited

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

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