Patent US3031401A successfully refreshed from Google Patents.
US3031401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Gulf Research and Development Co
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Filing: 1959-06-11
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Granted: 1962-04-24
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Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 Helen I Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:59
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1654; C10M2227/00; C10M2227/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A HYDROCARBON LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF SAID OIL, OF A REACTION PRODUCT OF (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY AND TERTIARY ALKYL, ALKENYL AND ALKYLOL, MONO- AND DIAMINES WHOSE SUBSTITUENTS EACH CONTAIN 6 TO 22 CARBON ATOMS, AND (B) AN ANHYDRIDE PREPARED BY REACTING A PARTIALLY ESTERIFIED THIOPHOSPHORIC ACID CONTAINING 1 TO 2 ORGANIC SUBSTITUENTS PER MOLECULE, WHOSE SUBSTITUENTS ARE SELECTED FROM A GROUP CONSISTING OF ALKYL, CYCLOALKYL, ALKENYL, ARYL, ALKARYL, AND ARALKYL HYDROCARBON RADICALS CONTAINING 6 TO 22 CARBON ATOMS EACH, WITH A BORYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORIC OXIDE, AND AN ANHYDRIDE OF BORIC OXIDE AND AN ALIPHATIC MONOCARBOXYLIC ACID, IN THE RATIO OF ABOUT 0.5 TO ABOUT 6 MOLES OF PARTIALLY ESTERIFIED THIOPHOSPHORIC ACID PER MOLE OF BORYLATING AGENT, AND WHEREIN THE AMINE TO ANHYDRIDE EQUIVALENT RATIO IS IN THE RANGE OF ABOUT 1:2 TO 2:1.
Claim 2
Dependent Claim
166 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A HYDROCARBON LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF SAID OIL, OF A REACTION PRODUCT OF (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY AND TERTIARY ALKYL, ALKENYL AND ALKYLOL, MONO- AND DIAMINES WHOSE SUBSTITUENTS EACH CONTAIN 6 TO 22 CARBON ATOMS, AND (B) AN ANHYDRIDE PREPARED BY REACTING A PARTIALLY ESTERIFIED THIOPHOSPHORIC ACID CONTAINING 1 TO 2 ORGANIC SUBSTITUENTS PER MOLECULE, WHOSE SUBSTITUENTS ARE SELECTED FROM A GROUP CONSISTING OF ALKYL, CYCLOALKYL, ALKENYL, ARYL, ALKARYL, AND ARALKYL HYDROCARBON RADICALS CONTAINING 6 TO 22 CARBON ATOMS EACH, WITH A BORYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORIC OXIDE, AND AN ANHYDRIDE OF BORIC OXIDE AND AN ALIPHATIC MONOCARBOXYLIC ACID, IN THE RATIO OF ABOUT 0.5 TO ABOUT 6 MOLES OF PARTIALLY ESTERIFIED THIOPHOSPHORIC ACID PER MOLE OF BORYLATING AGENT, AND WHEREIN THE AMINE TO ANHYDRIDE EQUIVALENT RATIO IS IN THE RANGE OF ABOUT 1:2 TO 2:1.
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) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |