US2577636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurization of lard oil
Assignee: Sunoco Inc
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Filing: 1949-05-07
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Granted: 1951-12-04
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:17
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10N; C10N2040/00; C10N2040/02; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS OF SULFURIZING LARD OIL WHICH COMPRISES CONTACTING HYDROGEN SULFIDE AND SULFUR DIOXIDE IN THE PRESENCE OF SAID LIQUID LARD OIL AT A TEMPERATURE OF FROM 50* F. TO 100* F.
Claim 2
Dependent Claim
32 words
A PROCESS OF SULFURIZING LARD OIL WHICH COMPRISES CONTACTING HYDROGEN SULFIDE AND SULFUR DIOXIDE IN THE PRESENCE OF SAID LIQUID LARD OIL AT A TEMPERATURE OF FROM 50* F. TO 100* F.
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) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |