US3250697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening process using ammonia as catalyst
Assignee: Arabian American Oil Co
•
Filing: 1963-12-12
•
Granted: 1966-05-10
•
Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Charles J Walters
- 👤 Robert E Messinger
- 👤 John A Schnautz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:28
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS OF DECREASING THE HYDROGEN SULFIDE CONTENT OF A SOUR LIQUID CRUDE PETROLEUM WHICH COMPRISES CONTACTING SAID SOUR LIQUID CRUDE PETROLEUM WITH A CATALYST CONSISTING ESSENTIALLY OF AMMONIA AND WITH AN OXYGEN-CONTAINING GAS TO OXIDIZE THE HYDROGEN SULFIDE TO A MATERIAL WHICH IS INNOCUOUS DURING SUBSEQUENT HANDLING AND TRANSPORTATION OF THE CRUDE.
Claim 2
Dependent Claim
53 words
A PROCESS OF DECREASING THE HYDROGEN SULFIDE CONTENT OF A SOUR LIQUID CRUDE PETROLEUM WHICH COMPRISES CONTACTING SAID SOUR LIQUID CRUDE PETROLEUM WITH A CATALYST CONSISTING ESSENTIALLY OF AMMONIA AND WITH AN OXYGEN-CONTAINING GAS TO OXIDIZE THE HYDROGEN SULFIDE TO A MATERIAL WHICH IS INNOCUOUS DURING SUBSEQUENT HANDLING AND TRANSPORTATION OF THE CRUDE.
References Cited (Backward Citations)
CA596358A
Cited
US1423712A
Cited
US1971172A
Cited
US2253011A
Cited
US2853431A
Cited
US2828247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |