US3058910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil additive concentrate
Assignee: Individual
•
Filing: 1958-10-24
•
Granted: 1962-10-16
•
Expires: 1978-10-24
Abstract
No abstract record available.
Inventors
- 👤 Thaddeus W Culmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:18
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN ADDITIVE CONCENTRATE FOR ADDITION TO A LUBRICATING OIL IN AN AMOUNT IN THE RANGE OF ABOUT 0.05 TO 20 PERCENT BY WEIGHT CONSISTING ESSENTIALLY OF A HYDROCARBON LUBRICATING OIL CONTAINING A MIXTURE OF (1) IN THE RANGE OF ABOUT 0.5 TO 25 WT. PERCENT, BASED ON CONCENTRATE, OF THE OIL-SOLUBLE ADDITION PRODUCT OF THE ACID THIOPHOSPHATE ESTER OF NONYL PHENOL AND PHOSPHORUS PENTASULFIDE WITH AN ALKYLENE DIAMINE, AND (2) IN THE RANGE OF ABOUT 10 TO 80 WT. PERCENT, BASED ON CONCENTRATE, OF THE OIL-SOLUBLE ADDITION PRODUCT OF A PETROLEUM SULFONIC ACID HAVING FROM 18 TO 24 CARBON ATOMS PER MOLECULE AND AN ALKYLENE DIAMINE, IN EACH INSTANCE SAID ALKYLENE DIAMINE BEING SELECTED FROM THE CLASS CONSISTING OF ETHYLENE DIAMINE, PROPYLENE DIAMINE AND BUTANE DIAMINE.
Claim 2
Dependent Claim
126 words
AN ADDITIVE CONCENTRATE FOR ADDITION TO A LUBRICATING OIL IN AN AMOUNT IN THE RANGE OF ABOUT 0.05 TO 20 PERCENT BY WEIGHT CONSISTING ESSENTIALLY OF A HYDROCARBON LUBRICATING OIL CONTAINING A MIXTURE OF (1) IN THE RANGE OF ABOUT 0.5 TO 25 WT. PERCENT, BASED ON CONCENTRATE, OF THE OIL-SOLUBLE ADDITION PRODUCT OF THE ACID THIOPHOSPHATE ESTER OF NONYL PHENOL AND PHOSPHORUS PENTASULFIDE WITH AN ALKYLENE DIAMINE, AND (2) IN THE RANGE OF ABOUT 10 TO 80 WT. PERCENT, BASED ON CONCENTRATE, OF THE OIL-SOLUBLE ADDITION PRODUCT OF A PETROLEUM SULFONIC ACID HAVING FROM 18 TO 24 CARBON ATOMS PER MOLECULE AND AN ALKYLENE DIAMINE, IN EACH INSTANCE SAID ALKYLENE DIAMINE BEING SELECTED FROM THE CLASS CONSISTING OF ETHYLENE DIAMINE, PROPYLENE DIAMINE AND BUTANE DIAMINE.
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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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |