Patent US5470904A successfully refreshed from Google Patents.
US5470904A
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US
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Permanent aqueous marker inks
Assignee: Berol Corp
•
Filing: 1994-02-02
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Granted: 1995-11-28
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Expires: 2014-02-02
Abstract
Abstract Permanent aqueous marker inks are provided which include surfactant, a pigment, a film-forming polymer, and water. The surfactant may be a combination of a hydrocarbon, preferably an alkylphenol ethyoxylate and a fluorocarbon, or it may be a silicone.
Inventors
- 👤 Rachel M. Loftin
- 👤 Kimberly B. Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/16; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
46 words
A marker comprising a hollow tubular body defining an ink reservoir, the reservoir containing an ink comprising a silicone surfactant, a pigment, a film-forming polymer and water and a tip in fluid communication with said reservoir for delivering said ink to a substrate by capillary action.
Claim 2
Dependent Claim
46 words
A marker comprising a hollow tubular body defining an ink reservoir, the reservoir containing an ink comprising a silicone surfactant, a pigment, a film-forming polymer and water and a tip in fluid communication with said reservoir for delivering said ink to a substrate by capillary action.
Claim 3
Dependent Claim
16 words
An aqueous marker ink comprising a fluorinated silicone surfactant, a film-forming polymer, a pigment, and water.
Claim 4
Dependent Claim
16 words
An aqueous marker ink comprising a fluorinated silicone surfactant, a film-forming polymer, a pigment, and water.
Claim 5
Dependent Claim
34 words
An aqueous marker ink comprising a silicone surfactant, a surfactant selected from the group consisting of fluorocarbon surfactants, surfactants including at least one aliphatic group, and mixtures thereof, a film forming polymer, and water.
Claim 6
Dependent Claim
34 words
An aqueous marker ink comprising a silicone surfactant, a surfactant selected from the group consisting of fluorocarbon surfactants, surfactants including at least one aliphatic group, and mixtures thereof, a film forming polymer, and water.
Claim 7
Dependent Claim
19 words
The marker of claim 1 wherein said ink comprises from about 0.1 to 1 percent of said silicone surfactant.
Claim 8
Dependent Claim
19 words
The marker of claim 4 wherein said ink comprises from about 0.2 to 0.6 percent of said silicone surfactant.
Claim 9
Dependent Claim
50 words
The marker of claim 1, 4 or 5 wherein said ink comprises from about 2 to 8 percent of said pigment, about 20 to 30 percent of said film-forming polymer, and sufficient water so that the Brookfield viscosity of the ink at 25° C. is less than about 20 cps.
Claim 10
Dependent Claim
12 words
The marker of claim 1 wherein said ink further comprises a humectant.
Claim 11
Dependent Claim
22 words
The aqueous marker ink of claim 2 wherein said ink comprises from about 0.1 to 1 percent of said fluorinated silicone surfactant.
Claim 12
Dependent Claim
22 words
The aqueous marker ink of claim 8 wherein said ink comprises from about 0.2 to 0.6 percent of said fluorinated silicone surfactant.
Claim 13
Dependent Claim
52 words
The aqueous marker ink of claim 2, 8 or 9 wherein said ink comprises from about 2 to 8 percent of said pigment, about 20 to 30 percent of said film-forming polymer, and sufficient water so that the Brookfield viscosity of the ink at 25° C. is less than about 20 cps.
Claim 14
Dependent Claim
14 words
The aqueous marker ink of claim 2 wherein said ink further comprises a humectant.
Claim 15
Dependent Claim
23 words
The aqueous marker ink of claim 3 wherein said ink comprises a total combined surfactant level of from about 0.1 to 1 percent.
Claim 16
Dependent Claim
23 words
The aqueous marker ink of claim 12 wherein said ink comprises a total combined surfactant level of from about 0.2 to 0.6 percent.
Claim 17
Dependent Claim
52 words
The aqueous marker ink of claim 3, 12 or 13 wherein said ink comprises from about 2 to 8 percent of said pigment, about 20 to 30 percent of said film-forming polymer, and sufficient water so that the Brookfield viscosity of the ink at 25° C. is less than about 20 cps.
Claim 18
Dependent Claim
14 words
The aqueous marker ink of claim 3 wherein said ink further comprises a humectant.
Claim 19
Dependent Claim
20 words
The aqueous marker ink of claim 15 wherein said ink comprises from about 1 to 25 percent of said humectant.
Claim 20
Independent Claim
42 words
A method of marking a substrate including the steps of providing a marker having a reservoir, the reservoir containing an ink comprising a silicone surfactant, a pigment, a film-forming polymer, and water, and making a mark with said marker on the substrate.
Claim 21
Independent Claim
42 words
A method of marking a substrate including the steps of providing a marker having a reservoir, the reservoir containing an ink comprising a silicone surfactant, a pigment, a film-forming polymer, and water, and making a mark with said marker on the substrate.
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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) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |