US2974000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fat-liquoring process
Assignee: Nopco Chemical Co
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Filing: 1956-10-05
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Granted: 1961-03-07
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 Retzsch Clinton Edward
- 👤 Levy Jacob
- 👤 Lighthipe Charles Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:59
CPC Classifications
C; C14; C14C; C14C9/00; C14C9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR FAT-LIQUORING LATHER WHICH COMPRISES CONTACTING SAID LATHER WITH A COMPOSITION COMPRISING WATER AND A CATIONIC AMINE SALT OF A CONDENSATE PRODUCED BY HEATING AT TEMPERATURES BETWEEN ABOUT 100* TO 210*C., (A) A FATTY MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING CARBON CHAIN LENGTHS OF FROM ABOUT 10 TO ABOUT 20 CARBON TOMS, GLYCERIDES COMPOSED OF SAID FATTY ACIDS AND ESTERS OF SAID FATTY ACIDS AND ALIPHATIC MONOHYDRIC ALCOHOLS HAVING A CARBON CHAIN LENGTH OF FROM 1 TO ABOUT 5 CARBON ATOMS AND (B) A DIALKANOLAMINE, THE ALKYL GROUPS OF WHICH CONTAIN UP TO ABOUT 4 CARBON ATOMS, SAID (A) AND (B) BEING REACTED IN SUCH QUANTITIES THAT THE RATIO OF ACYL GROUPS TO NITROGEN ATOMS IN THE REACTION MIXTURE IS ABOUT 1 TO 2.
Claim 2
Dependent Claim
130 words
A PROCESS FOR FAT-LIQUORING LATHER WHICH COMPRISES CONTACTING SAID LATHER WITH A COMPOSITION COMPRISING WATER AND A CATIONIC AMINE SALT OF A CONDENSATE PRODUCED BY HEATING AT TEMPERATURES BETWEEN ABOUT 100* TO 210*C., (A) A FATTY MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING CARBON CHAIN LENGTHS OF FROM ABOUT 10 TO ABOUT 20 CARBON TOMS, GLYCERIDES COMPOSED OF SAID FATTY ACIDS AND ESTERS OF SAID FATTY ACIDS AND ALIPHATIC MONOHYDRIC ALCOHOLS HAVING A CARBON CHAIN LENGTH OF FROM 1 TO ABOUT 5 CARBON ATOMS AND (B) A DIALKANOLAMINE, THE ALKYL GROUPS OF WHICH CONTAIN UP TO ABOUT 4 CARBON ATOMS, SAID (A) AND (B) BEING REACTED IN SUCH QUANTITIES THAT THE RATIO OF ACYL GROUPS TO NITROGEN ATOMS IN THE REACTION MIXTURE IS ABOUT 1 TO 2.
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) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |