US2878243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing sulfur compounds
Assignee: California Research LLC
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Filing: 1957-01-08
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Granted: 1959-03-17
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Expires: 1977-01-08
Abstract
No abstract record available.
Inventors
- 👤 Blickman Johannes
- 👤 George L Weamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:24
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C10M2219/00; C10M2219/02; C10M2219/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A ONE-STEP FOR PREPARING SULFUR-CONTAINING DERIVATIVES OF PARAFFIN WAX WHICH COMPRISES REACTING A HALOGENATED PARAFFIN WAX WITH SULFUR AND AN INORGANIC SULFIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFIDE AND AMMONIUM SULFIDE IN THE PRESENCE OF A LOWER ALKANOL OF NOT MORE THAN 7 CARBON ATOMS AT A TEMPERATURE OF FROM ABOUT 200 TO ABOUT 250* F. AND A PRESSURE OF FROM AOBUT 25 TO ABOUT 75 POUNDS PER SQUARE INCH FOR A PERIOD OF FROM ABOUT TWO TO ABOUT TEN HOURS.
Claim 2
Dependent Claim
84 words
A ONE-STEP FOR PREPARING SULFUR-CONTAINING DERIVATIVES OF PARAFFIN WAX WHICH COMPRISES REACTING A HALOGENATED PARAFFIN WAX WITH SULFUR AND AN INORGANIC SULFIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFIDE AND AMMONIUM SULFIDE IN THE PRESENCE OF A LOWER ALKANOL OF NOT MORE THAN 7 CARBON ATOMS AT A TEMPERATURE OF FROM ABOUT 200 TO ABOUT 250* F. AND A PRESSURE OF FROM AOBUT 25 TO ABOUT 75 POUNDS PER SQUARE INCH FOR A PERIOD OF FROM ABOUT TWO TO ABOUT TEN HOURS.
References Cited (Backward Citations)
US2611766A
Cited
US2726236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |