Patent US2647889A successfully refreshed from Google Patents.
US2647889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of barium salts of phosphorus sulfide-hydrocarbon reaction products
Assignee: Standard Oil Co
•
Filing: 1950-12-16
•
Granted: 1953-08-04
•
Expires: 1970-12-16
Abstract
No abstract record available.
Inventors
- 👤 Roger W Watson
- 👤 Clair R Ditto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN THE PREPARATION OF A BARIUM-CONTAINING NEUTRALIZED REACTION PRODUCT OF A PHOSPHORUS SULFIDE AND A NORMALLY LIQUID HYDROCARBON IN WHICH THE HYDROCARBON IS REACTED WITH FROM ABOUT 1% TO ABOUT 50% OF A PHOSPHORUS SULFIDE AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 600* F., AND NEUTRALIZED, THE IMPROVEMENT COMPRISING NEUTRALIZING THE PHOSPHORUS SULFIDEHYDROCARBON REACTION PRODUCT BY REACTING THE UNNEUTRALIZED PHOSPHOROUS SULFIDE-HYDROCARBON REACTION PRODUCT WITH AT LEAST STOICHIOMETRIC AMOUNTS OF BARIUM HYDROXIDE WHILE STEAMING THE MIXTURE AT A TEMPERATURE OF FROM ABOUT 220* F. TO ABOUT 300* F.
Claim 2
Dependent Claim
90 words
IN THE PREPARATION OF A BARIUM-CONTAINING NEUTRALIZED REACTION PRODUCT OF A PHOSPHORUS SULFIDE AND A NORMALLY LIQUID HYDROCARBON IN WHICH THE HYDROCARBON IS REACTED WITH FROM ABOUT 1% TO ABOUT 50% OF A PHOSPHORUS SULFIDE AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 600* F., AND NEUTRALIZED, THE IMPROVEMENT COMPRISING NEUTRALIZING THE PHOSPHORUS SULFIDEHYDROCARBON REACTION PRODUCT BY REACTING THE UNNEUTRALIZED PHOSPHOROUS SULFIDE-HYDROCARBON REACTION PRODUCT WITH AT LEAST STOICHIOMETRIC AMOUNTS OF BARIUM HYDROXIDE WHILE STEAMING THE MIXTURE AT A TEMPERATURE OF FROM ABOUT 220* F. TO ABOUT 300* 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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |