US4668411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diurea type grease composition
Assignee: Koyo Seiko Co Ltd
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Filing: 1985-12-23
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Granted: 1987-05-26
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Expires: 2005-12-23
Abstract
Abstract The present invention provides a grease composition comprising a lubricating oil and a thickener, characterized in that the thickener is a diurea compound prepared by reacting a diisocyanate compound with cyclohexylamine and monoalkylphenylamine wherein the alkyl portion has 8 to 16 carbon atoms.
Inventors
- 👤 Hiroyoshi Yasui
- 👤 Teruo Yoshida
- 👤 Hiroshi Komiya
- 👤 Toshitaro Oguchi
- 👤 Seiji Okamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:08
CPC Classifications
C; C10; C10M; C10M115/00; C10M115/08; C07; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C273/1818; C07C273/1827; C07C2601/00; C07C2601/12; C07C2601/14; C10M2205/00; C10M2205/02; C10M2205/028; C10M2215/00; C10M2215/10; C10M2215/102
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
39 words
A grease composition comprising a lubricating oil and a thickener, characterized in that the thickener is a diurea compound prepared by reacting a diisocyanate compound with cyclohexylamine and monoalkylphenylamine wherein the alkyl portion has 8 to 16 carbon atoms.
Claim 2
Dependent Claim
39 words
A grease composition comprising a lubricating oil and a thickener, characterized in that the thickener is a diurea compound prepared by reacting a diisocyanate compound with cyclohexylamine and monoalkylphenylamine wherein the alkyl portion has 8 to 16 carbon atoms.
Claim 3
Dependent Claim
23 words
A grease composition as defined in claim 1 wherein the monoalkylphenylamine is at least one of octylaniline, decylaniline, dodecylaniline, tetradecylaniline, hexadecylaniline and isododecylaniline.
Claim 4
Dependent Claim
21 words
A grease composition as defined in claim 1 wherein the alkyl portion of the monoalkylphenylamine has 8 to 12 carbon atoms.
Claim 5
Dependent Claim
20 words
A grease composition as defined in claim 3 wherein the monoalkylphenylamine is at least one of octylaniline, decylaniline and dodecylaniline.
Claim 6
Dependent Claim
13 words
A grease composition as defined in claim 4 wherein the monoalkylphenylamine is p-dodecylaniline.
Claim 7
Dependent Claim
17 words
A grease composition as defined in claim 1 wherein the diisocyanate compound is an aromatic diisocyanate compound.
Claim 8
Dependent Claim
22 words
A grease composition as defined in claim 1 wherein a molar ratio of monoalkylphenylamine to cyclohexylamine is about 1:9 to about 9:1.
Claim 9
Dependent Claim
21 words
A grease composition as defined in claim 7 wherein the monoalkylphenylamine to cyclohexylamine molar ratio is about 3:7 to about 7:3.
Claim 10
Dependent Claim
21 words
A grease composition as defined in claim 1 wherein the amines are reacted with the diisocyanate compound in the lubricating oil.
Claim 11
Dependent Claim
31 words
A grease composition as defined in claim 1 which comprises about 0.3 to about 30 parts by weight of the diurea compound per 100 parts by weight of the lubricating oil.
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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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |