US2799718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Odorless solvent and method of making same
Assignee: Standard Oil Co
•
Filing: 1954-10-18
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Granted: 1957-07-16
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Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 Warner E Scovill
- 👤 John G Partch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD OF PRODUCING AN ODORLESS SOLVENT WHICH COMPRISES THE STEP OF CONTACTING HEAVY ALKYLATE, THE FRACTION BOILING IN THE RANGE FROM ABOUT 320*F. TO ABOUT 620*F. AND PRODUCED BY THE CATALYTIC ALKYLATION OF ISOBUTANE WITH BUTYLENES, WITH A FULLER''S EARTH CONTAINING LESS THAN ABOUT 7.5% VOLATILE MATTER AS MEASURED BY AS-CERTAINING THE LOSS IN WEIGHT UPON HEATING TO 1700*F.
Claim 2
Independent Claim
60 words
A METHOD OF PRODUCING AN ODORLESS SOLVENT WHICH COMPRISES THE STEP OF CONTACTING HEAVY ALKYLATE, THE FRACTION BOILING IN THE RANGE FROM ABOUT 320*F. TO ABOUT 620*F. AND PRODUCED BY THE CATALYTIC ALKYLATION OF ISOBUTANE WITH BUTYLENES, WITH A FULLER''S EARTH CONTAINING LESS THAN ABOUT 7.5% VOLATILE MATTER AS MEASURED BY AS-CERTAINING THE LOSS IN WEIGHT UPON HEATING TO 1700*F.
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |