US2865965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process
Assignee: American Oil Co
•
Filing: 1957-02-26
•
Granted: 1958-12-23
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Paul D May
- 👤 Jr John A Ridgway
- 👤 Francis T Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:35
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/16; C07C319/02; C07C319/04; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
IN THE FREE RADICAL CATALYZED FEACTION OF HYDROGEN SULFIDE WITH A HYDROCARBON HAVING AN OLEFINIC LINKAGE, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID REACTION IN THE PRESENCE OF WATER IN AN AMOUNT SUFFICIENT TO PROMOTE THE REACTION.
Claim 2
Dependent Claim
36 words
IN THE FREE RADICAL CATALYZED FEACTION OF HYDROGEN SULFIDE WITH A HYDROCARBON HAVING AN OLEFINIC LINKAGE, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID REACTION IN THE PRESENCE OF WATER IN AN AMOUNT SUFFICIENT TO PROMOTE THE REACTION.
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |