US3228873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening of sour petroleum distillates
Assignee: Texaco Inc
•
Filing: 1963-12-13
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Granted: 1966-01-11
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Douglas J Youngblood
- 👤 Johan C D Oosterhout
- 👤 Levi C Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:26
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF REDUCING THE MERCAPTAN CONTENT OF A LIQUID PETROLEUM DISTILLATE COMPRISING INTRODUCING AIR AND COPPER NAPHTHENATE CATALYST INTO A STREAM OF SAID DISTILLATE, CONTACTING THE RESULTANT DISTILLATE-AIR-COPPER NAPHTHENATE MIXTURE WITH A ZONE OF PARTICULATE ADSORBENT MATERIAL AT A TEMPERATURE OF ABOVE 260*F., CONTINUING SAID COPPER NAPHTHENATE INTRODUCTION UNTIL THE CONTENT OF SAID COPPER IN SAID ADSORBENT MATERIAL IS IN THE RANGE BETWEEN ABOUT 0.05 AND 1.0 WT. PERCENT, PERIODICALLY REINTRODUCING SAID COPPER NAPHTHENATE TO MAINTAIN CATALYTIC ACTIVITY AND WITHDRAWING FROM THE ADSORBENT MATERIAL ZONE SAID PETROLEUM DISTILLATE OF REDUCED MERCAPTAN CONTENT.
Claim 2
Independent Claim
93 words
A METHOD OF REDUCING THE MERCAPTAN CONTENT OF A LIQUID PETROLEUM DISTILLATE COMPRISING INTRODUCING AIR AND COPPER NAPHTHENATE CATALYST INTO A STREAM OF SAID DISTILLATE, CONTACTING THE RESULTANT DISTILLATE-AIR-COPPER NAPHTHENATE MIXTURE WITH A ZONE OF PARTICULATE ADSORBENT MATERIAL AT A TEMPERATURE OF ABOVE 260*F., CONTINUING SAID COPPER NAPHTHENATE INTRODUCTION UNTIL THE CONTENT OF SAID COPPER IN SAID ADSORBENT MATERIAL IS IN THE RANGE BETWEEN ABOUT 0.05 AND 1.0 WT. PERCENT, PERIODICALLY REINTRODUCING SAID COPPER NAPHTHENATE TO MAINTAIN CATALYTIC ACTIVITY AND WITHDRAWING FROM THE ADSORBENT MATERIAL ZONE SAID PETROLEUM DISTILLATE OF REDUCED MERCAPTAN CONTENT.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |