Patent US2216164A successfully refreshed from Google Patents.
Patent US3405054A successfully refreshed from Google Patents.
US3405054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refinery process stream anti-foulant
Assignee: Standard Oil Co
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Filing: 1965-06-23
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Granted: 1968-10-08
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Jerome W Arkis
- 👤 John K Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
C; C10; C10G; C10G35/00; C10G75/00; C10G75/04; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2691
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD OF PREVENTING THE DEPOSITION OF SOLIDS IN PETROLEUM REFINERY PROCESSING EQUIPMENT AT TEMPERATURES BETWEEN ABOUT 300*F. AND ABOUT 1500*F. BY UNREFINED AND PARTIALLY REFINED LIQUID HYDROCARBONS WHICH HAVE A PROPENSITY FOR DEPOSITING GUMS AND SEDIMENTS WHEN HEATED TO SAID TEMPERATURES, WHICH METHOD COMPRISES INCORPORATING IN SAID LIQUID HYDROCARBONS WHICH ARE PRESENT IN SAID EQUIPMENT, A HYDROLYZED PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT.
Claim 2
Independent Claim
62 words
A METHOD OF PREVENTING THE DEPOSITION OF SOLIDS IN PETROLEUM REFINERY PROCESSING EQUIPMENT AT TEMPERATURES BETWEEN ABOUT 300*F. AND ABOUT 1500*F. BY UNREFINED AND PARTIALLY REFINED LIQUID HYDROCARBONS WHICH HAVE A PROPENSITY FOR DEPOSITING GUMS AND SEDIMENTS WHEN HEATED TO SAID TEMPERATURES, WHICH METHOD COMPRISES INCORPORATING IN SAID LIQUID HYDROCARBONS WHICH ARE PRESENT IN SAID EQUIPMENT, A HYDROLYZED PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT.
References Cited (Backward Citations)
US2849398A
Cited
US3017357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |