Patent US2553429A successfully refreshed from Google Patents.
US2553429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semidrying oils
Assignee: —
•
Filing: —
•
Granted: 1951-05-15
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Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:10
CPC Classifications
C; C09; C09F; C09F7/00; C09F7/08; C09F5/00; C09F5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MODIFYING DRYING AND SEMIDRYING OILS WHICH COMPRISES HEATING THE OIL IN THE PRESENCE OF A CATALYST CONTAINING A SMALL AMOUNT OF SULPHUR COMBINED CHEMICALLY WITH A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT AT TEMPERATURES BELOW THAT USUAL FOR POLYMERIZATION UNTIL THE SHIFTING OF THE ISOLATED DOUBLE BONDS OF THE OIL TO CONJUGATED UNSATURATION REACHES A MAXIMUM WHILE THE POLYMERIZATION REMAINS MINIMAL.
Claim 2
Independent Claim
68 words
THE METHOD OF MODIFYING DRYING AND SEMIDRYING OILS WHICH COMPRISES HEATING THE OIL IN THE PRESENCE OF A CATALYST CONTAINING A SMALL AMOUNT OF SULPHUR COMBINED CHEMICALLY WITH A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT AT TEMPERATURES BELOW THAT USUAL FOR POLYMERIZATION UNTIL THE SHIFTING OF THE ISOLATED DOUBLE BONDS OF THE OIL TO CONJUGATED UNSATURATION REACHES A MAXIMUM WHILE THE POLYMERIZATION REMAINS MINIMAL.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |