Patent US2451253A successfully refreshed from Google Patents.
Patent US2800401A successfully refreshed from Google Patents.
US2800401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon compositions
Assignee: Shell Development Co
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Filing: 1955-08-24
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Granted: 1957-07-23
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Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Lusebrink
- 👤 Stanley L Cosgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/197; C10L1/1973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A GASOLINE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A HYDROCARBON BASE MATERIAL BOILING SUBSTANTIALLY IN THE GASOLINE BOILING RANGE AND AT LEAST 1 AND LESS THAN 100 PARTS PER MILLION BY WEIGHT OF AN AT LEAST PARTIALLY HYDROLYZED REACTION PRODUCT OF A VINYL ESTER OF A LOWER MOLECULAR WEIGHT ALKYL CARBOXYLIC ACID AND AN ACYCLIC MONOOLEFINIC HYDROCARBON MATERIAL WITH A TERMINAL CH2=CH- GROUP AND CONTAINING FROM 10 TO 40 CARBON ATOMS PER MOLECULE, SAID REACTION PRODUCT, BEFORE HYDROLYSIS, CONTAINING SAID VINYL ESTER AND SAID MONOOLEFINIC HYDROCARBON MATERIAL IN A MOL RATIO OF FROM ABOUT 0.5:1 TO ABOUT 10:1, SAID HYDROLYZED REACTION PRODUCT HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 4000 TO ABOUT 100,000.
Claim 2
Dependent Claim
115 words
A GASOLINE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A HYDROCARBON BASE MATERIAL BOILING SUBSTANTIALLY IN THE GASOLINE BOILING RANGE AND AT LEAST 1 AND LESS THAN 100 PARTS PER MILLION BY WEIGHT OF AN AT LEAST PARTIALLY HYDROLYZED REACTION PRODUCT OF A VINYL ESTER OF A LOWER MOLECULAR WEIGHT ALKYL CARBOXYLIC ACID AND AN ACYCLIC MONOOLEFINIC HYDROCARBON MATERIAL WITH A TERMINAL CH2=CH- GROUP AND CONTAINING FROM 10 TO 40 CARBON ATOMS PER MOLECULE, SAID REACTION PRODUCT, BEFORE HYDROLYSIS, CONTAINING SAID VINYL ESTER AND SAID MONOOLEFINIC HYDROCARBON MATERIAL IN A MOL RATIO OF FROM ABOUT 0.5:1 TO ABOUT 10:1, SAID HYDROLYZED REACTION PRODUCT HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 4000 TO ABOUT 100,000.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |