US3193499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent and method for removing waxy deposits
Assignee: Phillips Petroleum Co
•
Filing: 1961-10-03
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Granted: 1965-07-06
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Donald E Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:58
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C23; C23G; C23G5/00; C23G5/02; C23G5/024; C10L1/16; C10L1/1616; C10L1/24; C10L1/2431; C10L1/2437; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOSITION, SUITABLE FOR REMOVING WAXY DEPOSITS, CONSISTING ESSENTIALLY OF AN ISOPARAFFINIC HYDROCARBON LIQUID CONTAINING SUBSTANTIALLY ONLY IOSPARAFFINS, SAID LIQUID BOILING IN THE RANGE OF 335-475*F., AND A SMALL AMOUNT OF CALCIUM PETROLEUM SULFONATE.
Claim 2
Dependent Claim
34 words
A COMPOSITION, SUITABLE FOR REMOVING WAXY DEPOSITS, CONSISTING ESSENTIALLY OF AN ISOPARAFFINIC HYDROCARBON LIQUID CONTAINING SUBSTANTIALLY ONLY IOSPARAFFINS, SAID LIQUID BOILING IN THE RANGE OF 335-475*F., AND A SMALL AMOUNT OF CALCIUM PETROLEUM SULFONATE.
References Cited (Backward Citations)
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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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |