US3344067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of copolymers of isobutene and conjugated dienes
Assignee: Standard Oil Co
•
Filing: 1964-12-28
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Granted: 1967-09-26
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Cecil G Brannen
- 👤 James A Wuellner
- 👤 Walter C Edmisten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:08
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2209/00; C10M2209/02; C10M2209/10; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2219/00; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
THE COPOLYMER CONSISTING ESSENTIALLY OF UNITS (A) HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
THE COPOLYMER CONSISTING ESSENTIALLY OF UNITS (A) HAVING THE FORMULA
Claim 3
Dependent Claim
37 words
A MINERAL LUBRICATING OIL CONTAINING ABOUT 2 WEIGHT PERCENT OF AN OIL-SOLUBLE COPOLYMER OF CLAIM 1 WHEREIN THE MOLAR RATIO OF A:B IS ABOUT 5-50:1, SAID COPOLYMER HAVING A MOLECULAR WEIGHT FROM ABOUT 50,000 TO ABOUT 90,000.
Claim 4
Dependent Claim
29 words
THE COMPOSITION OF CLAIM 11 FURTHER INCLUDING ABOUT 6 WEIGHT PERCENT BARIUM-CONTAINING P2S5-POLYBUTENE REACTION PRODUCT, ABOUT 1 WEIGHT PERCENT ZINC DIALKYLDITHIOPHOSPHATE, AND ABOUT 1 WEIGHT PERCENT CALCIUM PETROLEUM SULFONATE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |