Patent US2791540A successfully refreshed from Google Patents.
US2791540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon desulfurization process wherein the sulfur compounds are adsorbed by metallic silver
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-11-29
•
Granted: 1957-05-07
•
Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Newton Kimberlin
- 👤 Mason Ralph Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:46
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF DESULFURIZING SULFUR CONTAINING NAPHTHAS, SAID NAPHTHAS CONTAINING NO MORE THAN ABOUT 1,000 P.P.M. OF SULFUR WHICH COMPRISES CONTACTING THE NAPHTHAS AT A TEMPERATURE OF ABOUT 50*F. TO 100*F. WITH FINELY DIVIDED SUPPORTED METALLIC SILVER, SAID SUPPORTED SILVER BEING THE SOLE RE-AGENT, WHEREBY SULFUR-CONTAINING COMPOUNDS IN THE NAPHTHAS FORM CHEMICAL BONDS WITH THE SILVER WITHOUT SUBSTANTIAL DECOMPOSITION OF THE COMPOUNDS, AND THEREAFTER SEPARATING THE CONTACTED NAPHTHAS FROM THE SUPPORTED SILVER AND THE CHEMISORBED SULFURCONTAINING COMPOUNDS.
Claim 2
Independent Claim
77 words
A METHOD OF DESULFURIZING SULFUR CONTAINING NAPHTHAS, SAID NAPHTHAS CONTAINING NO MORE THAN ABOUT 1,000 P.P.M. OF SULFUR WHICH COMPRISES CONTACTING THE NAPHTHAS AT A TEMPERATURE OF ABOUT 50*F. TO 100*F. WITH FINELY DIVIDED SUPPORTED METALLIC SILVER, SAID SUPPORTED SILVER BEING THE SOLE RE-AGENT, WHEREBY SULFUR-CONTAINING COMPOUNDS IN THE NAPHTHAS FORM CHEMICAL BONDS WITH THE SILVER WITHOUT SUBSTANTIAL DECOMPOSITION OF THE COMPOUNDS, AND THEREAFTER SEPARATING THE CONTACTED NAPHTHAS FROM THE SUPPORTED SILVER AND THE CHEMISORBED SULFURCONTAINING COMPOUNDS.
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) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |