US2579986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lanolin alcohols from wool grease
Assignee: BOTANY MILLS Inc
•
Filing: 1950-02-03
•
Granted: 1951-12-25
•
Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 Vaterrodt Peter
- 👤 Robert E Choyee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:46
CPC Classifications
C; C11; C11B; C11B11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR RECOVERING LANOLIN ALCOHOLS FROM WOOL GREASE WHICH CONSISTS IN SAPONIFYING THE WOOL GREASE BY CAUSTIC ALKALI SOLUTION HAVING A CAUSTIC ALKALI CONTENT OF ABOUT 75% TO ABOUT 85% AT PRESSURE NOT SUBSTANTIALLY EXCEEDING ONE ATMOSPHERE, CONVERTING THE PRODUCT TO CALCIUM SOAPS, CARRYING SAID ALCOHOLS, AND NEUTRALIZING THE SOAPS, THEN DRYING THE NEUTRALIZED CALCIUM SOAPS, EXTRACTING THE LANOLIN ALCOHOLS FROM THE NEUTRALIZED CALCIUM SOAPS BY SOLVENT ACTION AND PRECIPITATION OF THE CALCIUM SOAPS IN LIGHT FLOCCULENT FORM FROM A SOLUTION OF THE LANOLIN ALCOHOLS, THENCE REMOVING SOLVENT FROM SAID ALCOHOLS.
Claim 2
Dependent Claim
92 words
A PROCESS FOR RECOVERING LANOLIN ALCOHOLS FROM WOOL GREASE WHICH CONSISTS IN SAPONIFYING THE WOOL GREASE BY CAUSTIC ALKALI SOLUTION HAVING A CAUSTIC ALKALI CONTENT OF ABOUT 75% TO ABOUT 85% AT PRESSURE NOT SUBSTANTIALLY EXCEEDING ONE ATMOSPHERE, CONVERTING THE PRODUCT TO CALCIUM SOAPS, CARRYING SAID ALCOHOLS, AND NEUTRALIZING THE SOAPS, THEN DRYING THE NEUTRALIZED CALCIUM SOAPS, EXTRACTING THE LANOLIN ALCOHOLS FROM THE NEUTRALIZED CALCIUM SOAPS BY SOLVENT ACTION AND PRECIPITATION OF THE CALCIUM SOAPS IN LIGHT FLOCCULENT FORM FROM A SOLUTION OF THE LANOLIN ALCOHOLS, THENCE REMOVING SOLVENT FROM SAID ALCOHOLS.
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |