US3011971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurizing dissimilar hydrocarbons
Assignee: MW Kellogg Co
•
Filing: 1958-09-05
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Granted: 1961-12-05
•
Expires: 1978-09-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Slyngstad
- 👤 Frank L Lempert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:34
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A METHOD FOR UPGRADING DISSIMILAR HYDROCARBON FEED MATERIALS OF DIFFERENT API GRAVITY WHICH COMPRISES PASSING A HYDROGEN-RICH GASEOUS STREAM SEQUENTIALLY THROUGH A REACTION ZONE CONTAINING A PLURALITY OF SEPARATE CATALYST BEDS, PASSING ONE OF SAID HYDROCARBON FEED MATERIALS COMPRISING A LOW API GRAVITY MATERIAL OBTAINED FROM A CRACKING OPERATION ADMIXED WITH SAID HYDROGEN THROUGH SAID CATALYST BEDS IN SAID REACTION ZONE UNDER REACTION CONDITIONS TO UPGRADE SAID HYDROCARBON FEED MATERIAL TO DESIRED PRODUCT, RECOVERING PRODUCT OF SAID LOW API GRAVITY FEED, DISCONTINUING THE FLOW OF SAID LOW API GRAVITY FEED MATERIAL TO SAID REACTION ZONE, CONTINUING THE FLOW OF SAID HYDROGEN-RICH STREAM TO SAID REACTION ZONE, INTRODUCING A STRAIGHT RUN HYDROCARBON FEED MATERIAL OF HIGHER API GRAVITY THAN SAID FIRST-MENTIONED FEED MATERIAL TO SAID REACTION ZONE AT A POINT SUCH THAT THE LATTER FEED MATERIAL PASSES THROUGH ONLY A PORTION OF SAID CATALYST BEDS ADMIXED WITH HYDROGEN UNDER REACTION CONDITIONS WHILE THE HYDROGEN-RICH STREAM PASSES THROUGH THE REMAINING PORTION OF SAID CATALYST BEDS, AND RECOVERING A PRODUCT OF SAID HIGH API GRAVITY FEED FROM SAID REACTION ZONE.
Claim 2
Independent Claim
177 words
A METHOD FOR UPGRADING DISSIMILAR HYDROCARBON FEED MATERIALS OF DIFFERENT API GRAVITY WHICH COMPRISES PASSING A HYDROGEN-RICH GASEOUS STREAM SEQUENTIALLY THROUGH A REACTION ZONE CONTAINING A PLURALITY OF SEPARATE CATALYST BEDS, PASSING ONE OF SAID HYDROCARBON FEED MATERIALS COMPRISING A LOW API GRAVITY MATERIAL OBTAINED FROM A CRACKING OPERATION ADMIXED WITH SAID HYDROGEN THROUGH SAID CATALYST BEDS IN SAID REACTION ZONE UNDER REACTION CONDITIONS TO UPGRADE SAID HYDROCARBON FEED MATERIAL TO DESIRED PRODUCT, RECOVERING PRODUCT OF SAID LOW API GRAVITY FEED, DISCONTINUING THE FLOW OF SAID LOW API GRAVITY FEED MATERIAL TO SAID REACTION ZONE, CONTINUING THE FLOW OF SAID HYDROGEN-RICH STREAM TO SAID REACTION ZONE, INTRODUCING A STRAIGHT RUN HYDROCARBON FEED MATERIAL OF HIGHER API GRAVITY THAN SAID FIRST-MENTIONED FEED MATERIAL TO SAID REACTION ZONE AT A POINT SUCH THAT THE LATTER FEED MATERIAL PASSES THROUGH ONLY A PORTION OF SAID CATALYST BEDS ADMIXED WITH HYDROGEN UNDER REACTION CONDITIONS WHILE THE HYDROGEN-RICH STREAM PASSES THROUGH THE REMAINING PORTION OF SAID CATALYST BEDS, AND RECOVERING A PRODUCT OF SAID HIGH API GRAVITY FEED FROM SAID REACTION ZONE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |