Patent US2612475A successfully refreshed from Google Patents.
US2612475A
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Lubricating oil additive
Assignee: Standard Oil Development Co
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Filing: 1949-10-28
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Granted: 1952-09-30
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jeffrey H Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:56
CPC Classifications
C; C10; C10M; C10M147/00; C10M147/04; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2213/00; C10M2213/04; C10M2213/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A LUBRICATING OIL COMPOSITION WHICH COMPRISES A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL BASE STOCK HAVING COMBINED THEREIN A MINOR PROPORTION SUFFICIENT TO REDUCE THE POUR POINT THEREOF OF A HOMOPOLYMERIC MATERIAL FORMED BY SUBJECTING A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
42 words
A LUBRICATING OIL COMPOSITION WHICH COMPRISES A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL BASE STOCK HAVING COMBINED THEREIN A MINOR PROPORTION SUFFICIENT TO REDUCE THE POUR POINT THEREOF OF A HOMOPOLYMERIC MATERIAL FORMED BY SUBJECTING A COMPOUND HAVING THE GENERAL FORMULA
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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) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |