Patent US3980573A successfully refreshed from Google Patents.
US3980573A
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Substituted dimercapto thiadiazoles and lubricant compositions containing same
Assignee: Mobil Oil AS
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Filing: 1975-07-24
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Granted: 1976-09-14
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Expires: 1995-07-24
Abstract
Abstract Lubricants are stabilized against wear and corrosion by adding an additive amount of a novel substituted thiadiazole. These are derived from 2,5-dimercapto-1,3,4-thiadiazole and other moieties, as for example an organophosphorus moiety.
Inventors
- 👤 Abraham O. M. Okorodudu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:53
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6536; C07F9/6539; C07F9/65392; C07F9/65395; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A lubricant composition comprising a major proportion of a lubricant and an antiwear or corrosion inhibiting amount of a compound of the formula: ##EQU4## wherein: R is C 1 -C 25 hydrocarbyl; X is oxygen or sulfur; and m is zero or 1.
Claim 2
Dependent Claim
43 words
A lubricant composition comprising a major proportion of a lubricant and an antiwear or corrosion inhibiting amount of a compound of the formula: ##EQU4## wherein: R is C 1 -C 25 hydrocarbyl; X is oxygen or sulfur; and m is zero or 1.
Claim 3
Dependent Claim
21 words
The composition of claim 1 having therein a compound according to formula 1 wherein R is butyl and m is zero.
Claim 4
Dependent Claim
24 words
The composition of claim 1 having therein a compound according to formula 1, wherein R is butyl, X is oxygen and m is 1.
Claim 5
Dependent Claim
21 words
The composition of claim 1 having therein a compound according to formula 1, wherein R is octyl and m is zero.
Claim 6
Dependent Claim
24 words
The composition of claim 1 having therein a compound according to formula 1, wherein R is octyl, X is oxygen and m is 1.
Claim 7
Dependent Claim
21 words
The composition of claim 1 having therein a compound according to formula 1, wherein R is nonylphenyl and m is zero.
Claim 8
Dependent Claim
24 words
The composition of claim 1 having therein a compound according to formula 1, wherein R is nonylphenyl, X is oxygen and m is 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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |