Patent US2950950A successfully refreshed from Google Patents.
US2950950A
Expired / Lapsed
US
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Oil base fat-liquor composition with polybasic acid ester and method of use
Assignee: Boehme Fettchemie GmbH
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Filing: 1954-06-24
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Granted: 1960-08-30
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Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Plapper Jurgen
- 👤 Heyden Rudi
- 👤 Arnold Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:46
CPC Classifications
C; C14; C14C; C14C9/00; C14C9/02; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A FAT-LIQUORING COMPOSITION FOR CHROME-TANNED HIDES AND SKINS, COMPRISING AN OIL BASE AND ABOUT 2 TO 20% OF A MASKING AGENT SELECTED FROM THE GROUP CONSISTING OF ACIDIC HIGHER AIPHATIC ALCOHOL MONO-ESTERS OF POLYBASIC ACIDS, SELECTED FROM THE GROUP CONSISTING OF TRIAND TETRA-BASIC ACIDS WHEREIN THE ALCOHOL RADICAL CONTAINS FROM 12 TO 18 CARBON ATOMS, AND SALTS THEREOF, SAID MASKING AGENT CONTAINING AT LEAST TWO FREE ACID GROUPS AND BEING SOLUBLE IN SAID OIL BASE.
References Cited (Backward Citations)
US1407449A
Cited
US2115509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |