US5558808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored transmission fluid
Assignee: United Color Manufacturing Inc
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Filing: 1995-06-07
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Granted: 1996-09-24
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Expires: 2015-06-07
Abstract
Abstract Automatic transmission fluid containing a red dye stable even in long-lived transmission fluids.
Inventors
- 👤 Michael J. Smith
- 👤 Bharat Desai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:57
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/007; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
60 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR3## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, and said dye is present in an amount sufficient to impart visible red color to said fluid.
Claim 2
Dependent Claim
60 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR3## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, and said dye is present in an amount sufficient to impart visible red color to said fluid.
Claim 3
Dependent Claim
45 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR4## wherein R 3 is an alkyl or alkoxy group containing at least 2 carbons and said dye is present in amounts sufficient to impart visible red color to said fluid.
Claim 4
Dependent Claim
45 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR4## wherein R 3 is an alkyl or alkoxy group containing at least 2 carbons and said dye is present in amounts sufficient to impart visible red color to said fluid.
Claim 5
Dependent Claim
73 words
A composition comprising automatic transmission fluid and at least two of the following dyes: ##STR5## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, R 3 is an alkyl or alkoxy group containing at least 2 carbons, and said dye is present in an amount sufficient to impart visible red color to said fluid.
Claim 6
Dependent Claim
73 words
A composition comprising automatic transmission fluid and at least two of the following dyes: ##STR5## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, R 3 is an alkyl or alkoxy group containing at least 2 carbons, and said dye is present in an amount sufficient to impart visible red color to said fluid.
Claim 7
Dependent Claim
18 words
A composition as recited in claim 3 wherein said dye comprises a mixture of formulas I and II.
Claim 8
Dependent Claim
18 words
A composition as recited in claim 3 wherein said dye comprises a mixture of formulas III and IV.
Claim 9
Dependent Claim
20 words
A composition as recited in claim 1 wherein said transmission fluid contains about 0.05 to 5.0 percent of said dye.
Claim 10
Dependent Claim
15 words
A composition according to claim 1 where R 1 and R 2 are both cyclohexyl.
Claim 11
Dependent Claim
21 words
A composition according to claim 1 where R 1 and R 2 are a mixture of methoxypropyl, 2'ethyhexyl and 2'ethylhexoxy groups.
Claim 12
Dependent Claim
14 words
A composition according to claim 2 where R 3 is a 1 methylethyl group.
Claim 13
Dependent Claim
13 words
A composition according to claim 2 where R 3 is an ethoxy group.
Claim 14
Dependent Claim
20 words
A composition as recited in claim 7 wherein said transmission fluid contains about 0.01 to 1.0 percent of said dye.
Claim 15
Dependent Claim
20 words
A composition as recited in claim 4 wherein said transmission fluid contains about 0.05 to 5.0 percent of said dye.
Claim 16
Dependent Claim
20 words
A composition as recited in claim 9 wherein said transmission fluid contains about 0.05 to 1.0 percent of said dye.
Claim 17
Dependent Claim
20 words
A composition as recited in claim 10 wherein said transmission fluid contains about 0.05 to 1.0 percent of said dye.
Claim 18
Independent Claim
42 words
A method of coloring automatic transmission fluid comprising obtaining an automatic transmission fluid, adding at least one of the following dyes to said fluid in an amount sufficient to visibly color said fluid red: ##STR6## and dissolving said dye into said fluid.
Claim 19
Independent Claim
42 words
A method of coloring automatic transmission fluid comprising obtaining an automatic transmission fluid, adding at least one of the following dyes to said fluid in an amount sufficient to visibly color said fluid red: ##STR6## and dissolving said dye into said fluid.
Claim 20
Dependent Claim
71 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR7## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, said dye is present in an amount sufficient to impart visible red color to said fluid, and said visible red color persists through the life of said fluid.
Claim 21
Dependent Claim
71 words
A composition comprising automatic transmission fluid and at least one of the following dyes: ##STR7## wherein R 1 and R 2 are the same or different alkyl groups containing at least 2 carbons each or a cycloalkyl group containing at least 3 carbons, said dye is present in an amount sufficient to impart visible red color to said fluid, and said visible red color persists through the life of said fluid.
Claim 22
Dependent Claim
28 words
A composition as recited in claim 16 wherein said composition maintains about 80% or more of its color intensity after heating for about 48 hours at 190° C.
Claim 23
Dependent Claim
28 words
A composition as recited in claim 16 wherein said composition maintains about 92% or more of its color intensity after heating for about 24 hours at 190° C.
Claim 24
Dependent Claim
20 words
A composition as recited in claim 2 wherein said transmission fluid contains about 0.05 to 5.0 percent of said dye.
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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) | 1999-09-24 | 2000-03-25 | 2000-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-24 | 2004-03-25 | 2004-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-24 | 2008-03-25 | 2008-09-24 | $7700.00 | Window Closed / Lapsed |