US4634606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washable marking fluid formulation for soft gelatin capsules and use thereof
Assignee: Nelson Paint Co
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Filing: 1985-10-09
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Granted: 1987-01-06
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Expires: 2005-10-09
Abstract
Abstract This invention relates to a washable marking fluid to be used in projectiles in which the prime and critical ingredient is a nonionic polyoxyethylene derivative of fatty acid partial esters of sorbitol anhydride. Projectiles produced from soft gelatin capsules containing such washable marking fluid possess ideal rheological properties and desired uniformity and stability. The fluid when packaged in a soft gelatin capsule produces projectiles that are more accurate and stable and make bright, highly visible marks that can be easily washed out with water and/or detergent and thus are ideally suitable for use in sports and games exercises.
Inventors
- 👤 George A. Skogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:06
CPC Classifications
C; C09; C09D; C09D11/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
77 words
A washable marking fluid formulation comprising from about 94 to about 99% vt weight of a nonionic polyoxyethylene derivative of fatty acid partial esters of sorbitol anhydride, about 0.5 to about 5.0% by weight of a colored pigment, about 0.3 to about 3.0% by weight of a suspending agent and about 0.05 to about 0.8% by weight of an antifoaming agent, wherein the percentages by weight are based on the weight of the total marking fluid composition.
Claim 2
Dependent Claim
77 words
A washable marking fluid formulation comprising from about 94 to about 99% vt weight of a nonionic polyoxyethylene derivative of fatty acid partial esters of sorbitol anhydride, about 0.5 to about 5.0% by weight of a colored pigment, about 0.3 to about 3.0% by weight of a suspending agent and about 0.05 to about 0.8% by weight of an antifoaming agent, wherein the percentages by weight are based on the weight of the total marking fluid composition.
Claim 3
Dependent Claim
75 words
A formulation of Claim 1 wherein the nonionic polyoxyethylene derivative of fatty acid partial esters sorbitol anhydride has the formula ##STR2## wherein OCR is fatty acid radical selected from the group consisting of a laurate, palmitate, stearate and oleate radical, (W+X+Y+Z) is a number of no less than about 12 and no more than about 26 and such derivative has an HLB value of not less than about 10 and not more than about 19.
Claim 4
Dependent Claim
26 words
A formulation of Claim 2 wherein OCR is a laurate radical, (W+X+Y+Z) has a value of 18 to 22 and the HLB value is about 16.7.
Claim 5
Dependent Claim
13 words
A formulation of claim 2 wherein the suspending agent is a fumed silica.
Claim 6
Dependent Claim
18 words
A formulation of claim 2 wherein the suspending agent is an organic derivative of hydrous magnesium aluminum silicate.
Claim 7
Dependent Claim
13 words
A formulation of claim 3 wherein the suspending agent is a fumed silica.
Claim 8
Dependent Claim
18 words
A formulation of claim 3 wherein the suspending agent is an organic derivative of hydrous magnesium aluminum silicate.
Claim 9
Dependent Claim
51 words
A washable marking fluid formulation comprising: ______________________________________
Component Percent by Weight
______________________________________
Polyoxyethylene (20) sorbitol monolaureate
94-99%
Colored Pigment 0.5-5.0%
Suspending Agent 0.3-3.0%
Antifoam Agent 0.05-0.80%
______________________________________ wherein the polyoxyethylene (20) sorbitol monolaurate has 10 to 22 ethylene oxide units in the ether side chain and a HLB value of 16.7.
Claim 10
Dependent Claim
51 words
A washable marking fluid formulation comprising: ______________________________________
Component Percent by Weight
______________________________________
Polyoxyethylene (20) sorbitol monolaureate
94-99%
Colored Pigment 0.5-5.0%
Suspending Agent 0.3-3.0%
Antifoam Agent 0.05-0.80%
______________________________________ wherein the polyoxyethylene (20) sorbitol monolaurate has 10 to 22 ethylene oxide units in the ether side chain and a HLB value of 16.7.
Claim 11
Dependent Claim
19 words
A soft gelatin marking capsule comprising a soft gelatin capsule containing a washable marking fluid formulation of claim 1.
Claim 12
Dependent Claim
19 words
A soft gelatin marking capsule comprising a soft gelatin capsule containing a washable marking fluid formulation of claim 2.
Claim 13
Dependent Claim
19 words
A soft gelatin marking capsule comprising a soft gelatin capsule containing a washable marking fluid formulation of claim 3.
Claim 14
Dependent Claim
19 words
A soft gelatin marking capsule comprising a soft gelatin capsule containing a washable marking fluid formulation of claim 5.
Claim 15
Dependent Claim
19 words
A soft gelatin marking capsule comprising a soft gelatin capsule containing a washable marking fluid formulation of claim 8.
Claim 16
Dependent Claim
16 words
A soft gelatin capsule of claim 13 wherein the soft gelatin capsule is spheroidal in shape.
Claim 17
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 9 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
Claim 18
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 10 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
Claim 19
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 11 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
Claim 20
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 12 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
Claim 21
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 13 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
Claim 22
Dependent Claim
48 words
A method of marking an article with a washable marking fluid which comprises projecting a soft gelatin capsule of claim 14 from a projecting instrument, said capsule rupturing only on impact with the article to thereby mark it with the washable marking fluid formulation contained in the capsule.
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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |