US2940929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature lubricants
Assignee: Shell USA Inc
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Filing: 1958-06-26
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Granted: 1960-06-14
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Diamond Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2209/00; C10M2209/02; C10M2209/10; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10N; C10N2010/00; C10N2010/06; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AS A NEW LUBRICATING COMPOSITION A MAJOR PROPORTION OF A POLYPHENYL ETHERS HAVING 3-8 PHENYL RADICALS PER MOLECULE, AT LEAST ONE-THIRD OF THE LINKAGES BETWEEN PHENYL RADICALS BEING IN META POSITIONS RELATIVE TO EACH OTHER, THE ONLY SUBSTITUENTS DIRECTLY ATTACHED TO PHENYL RING CARBON ATOMS BEING OF THE GROUP CONSISTING OF HYDROGEN, TERTIARY BUTYL RADICALS, AND ALPHA-CUMYL RADICALS, AND 0.25-2.5% BY WEIGHT EACH OF BROMO-SUBSTITUTED POLYPHENYL ETHER, BIS(ALKYLATED HYDROXYPHENYL) SULFIDE, THE ALKYL RADICALS OF WHICH HAS 1-6 CARBON ATOMS EACH AND AN INDIUM SALT OF AN ALIPHATIC MONOCARBOXYLIC ACID.
Claim 2
Dependent Claim
93 words
AS A NEW LUBRICATING COMPOSITION A MAJOR PROPORTION OF POLYPHENYL ETHERS HAVING AT LEAST 3 PHENYL RADICALS PER MOLEUCLE, THE ONLY SUBSTITUENTS DIRECTLY ATTACHED TO PHENYL RING CARBON ATOMS BEING OF THE GROUP CONSISTING OF HYDROGEN, TERTIARY BUTYL RADICALS, AND ALPHA-CUMYL RADICALS, SAID ETHERS CONTAINING 0.25-2.5% BY WEIGHT OF AT LEAST ONE INDIUM SALT OF AN ACID OF THE GROUP CONSISTING OF FATTY ACIDS HAVING 8-15 CARBON ATOMS PER MOLECULE, ALKYLATED BENZOIC ACIDS, THE BENZOIC ACID NUCLEUS OF WHICH BEARS 1-4 ALKYL RADICALS HAVING 3-10 CARBON ATOMS EACH, ACIDS HAVING THE GENERAL STRUCTURE
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |