US3814212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Working of non-ferrous metals
Assignee: Universal Oil Products Co
•
Filing: 1972-05-12
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Granted: 1974-06-04
•
Expires: 1992-05-12
Abstract
Abstract In the working of non-ferrous metals, particularly zirconium or alloy thereof or titanium or alloy thereof, the improved method of using a mono- or polyamine containing at least 12 carbon atoms as a lubricant.
Inventors
- 👤 E Latos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:52
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/02; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/067; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/086; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
The method of claim 1 in which said amine is a N,N''-di-substituted-diaminodiphenylalkane in which the alkane moiety contains from 1 to 8 carbon atoms.
Claim 2
Dependent Claim
23 words
The method of claim 2 in which said amine is a 4,4''-di-(secalkylamino)-diphenylpropane in which each alkyl contains from 3 to 20 carbon atoms.
Claim 3
Dependent Claim
25 words
The method of claim 2 in which said amine is 4,4''-di-(cycloalkylamino)-diphenylpropane in which the cycloalkyl contains from 3 to 12 carbon atoms in the ring.
Claim 4
Dependent Claim
25 words
The method of claim 1 in which said amine is an alkyl primary amine in which the alkyl contains from 12 to 40 carbon atoms.
Claim 5
Dependent Claim
23 words
The method of claim 1 in which said amine is a dialkylamine in which each alkyl contains from 6 to 40 carbon atoms.
Claim 6
Dependent Claim
12 words
The method of claim 6 in which said amine is ditallow amine.
Claim 7
Dependent Claim
45 words
The method of claim 1 in which said amine is a N-alkyldiaminoalkane in which the alkyl contains from 6 to 30 carbon atoms and the alkane moiety contains from 2 to 6 carbon atoms, with the total number of carbon atoms being at least 12.
Claim 8
Dependent Claim
11 words
The method of claim 8 in which said amine is N-tallow-1,3-diaminopropane.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |