Patent US3250716A successfully refreshed from Google Patents.
US3250716A
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Transmission fluids
Assignee: Shell USA Inc
•
Filing: 1963-05-03
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Granted: 1966-05-10
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:47
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/047; C10M101/00; C10M101/02; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M149/00; C10M149/02; C10M149/10; C10M159/00; C10M159/12; C10M159/123; C10M2203/00; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN IMPROVED TRANSMISSION FLUID CONSISTING ESSENTIALLY OF A MIXTURE OF TWO MINERAL OIL FRACTIONS OF: (I) 30-50 VI MINERAL OIL, 50-100 SUS AT 100*F. AND AN AROMATIC CONTENT OF 5-15% AND (II) A 100-150 VI MINERAL OIL, 80-150 SUS AT 100*F. AND AN AROMATIC CONTENT OF 15-30%, FRACTIONS (I) AND (II) BEING SOLVENT REFINED AND BLENDED IN PROPORTIONS OF (I): (II) OF 1585% AND 85-15% RESPECTIVELY AND HAVING INCORPORATED THEREIN FROM ABOUT 1% TO ABOUT 10% OF A COPOLYMER OF OCTYL AND LAURYL METHACRYLATES IN THE MOLECULAR WEIGHT RANGE OF FROM 10,000 TO 15,000.
Claim 2
Dependent Claim
24 words
THE TRANSMISSION FLUID OF CLAIM 2 CONTAINING FROM ABOUT 1% TO ABOUT 10% OF CARBONATE BASIC BA AND ZN SALT OF P2S5-OLEFIN REACTION PRODUCT.
References Cited (Backward Citations)
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Cited
US2710842A
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US2737496A
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |