US5116533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorescent marking material
Assignee: Playstation Inc
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Filing: 1991-06-11
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Granted: 1992-05-26
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Expires: 2011-06-11
Abstract
Abstract A non-toxic moldable phosphorescent marker has phosphorescent pigment particles that are suspended in a milled mixture of an inert filler and a wax blend base. The phosphorescent pigment particles, which impart luminescent properties to the marker, are excited by light. The composition of the marker is such that it leaves a strip of phosphorescent marking material on a surface against which the marker is rubbed. The deposited material contains the suspended phosphorescent particles, which luminesces when excited by light.
Inventors
- 👤 William Grandmont
- 👤 Paula Rendino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; B; B43; B43K; B43K19/00; C09K; C09K11/00; C09K11/02; C09K11/025; C09K11/08
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
A phosphorescent marking material comprising a wax base vehicle, filler particles, and phosphorescent particles, said phosphorescent particles being suspended in a mixture of said wax base vehicle and said filler particles, said mixture comprising a range of 10 percent to 30 percent by weight of said filler particles and a range of 10 to 50 percent by weight of said phosphorescent particles, said phosphorescent particles having a particle size in the size range of 5 to 20 microns, said filler particles being at least partially transparent to actimic radiation.
Claim 2
Dependent Claim
89 words
A phosphorescent marking material comprising a wax base vehicle, filler particles, and phosphorescent particles, said phosphorescent particles being suspended in a mixture of said wax base vehicle and said filler particles, said mixture comprising a range of 10 percent to 30 percent by weight of said filler particles and a range of 10 to 50 percent by weight of said phosphorescent particles, said phosphorescent particles having a particle size in the size range of 5 to 20 microns, said filler particles being at least partially transparent to actimic radiation.
Claim 3
Dependent Claim
25 words
The marking material as claimed in claim 1 wherein said phosphorescent particles by percent of total weight is in the range of 20% to 50%.
Claim 4
Independent Claim
153 words
A method of suspending pigment particles in a wax medium to allow molding and extrusion, said method comprising the steps of: (a) preparing a blend of waxes; (b) melting said wax blend; (c) mixing an inert filler material with said wax blend to form a wax/filler mixture; (d) milling said wax/filler mixture to form a uniform suspension to said inert filler material in said wax blend; (e) mixing pigment particles having a particle size in the size range of 5 to 20 microns into said milled wax/filler mixture to form a final blend, said final blend being a continuous, non-settling suspension of said pigment particles in said mixture of said filler material and said wax blend and having in the range of 10 percent to 30 percent by weight of said filler particles and a range of 10 to 50 percent by weight of said pigment particles; and (f) whipping said final blend.
Claim 5
Independent Claim
153 words
A method of suspending pigment particles in a wax medium to allow molding and extrusion, said method comprising the steps of: (a) preparing a blend of waxes; (b) melting said wax blend; (c) mixing an inert filler material with said wax blend to form a wax/filler mixture; (d) milling said wax/filler mixture to form a uniform suspension to said inert filler material in said wax blend; (e) mixing pigment particles having a particle size in the size range of 5 to 20 microns into said milled wax/filler mixture to form a final blend, said final blend being a continuous, non-settling suspension of said pigment particles in said mixture of said filler material and said wax blend and having in the range of 10 percent to 30 percent by weight of said filler particles and a range of 10 to 50 percent by weight of said pigment particles; and (f) whipping said final blend.
Claim 6
Dependent Claim
17 words
The method as claimed in claim 3 wherein said wax/filler mixture is milled in a colloid mill.
Claim 7
Dependent Claim
25 words
The method as claimed in claim 3 wherein the quantity of said inert filler by total weight is in the range of 13% to 20%.
Claim 8
Dependent Claim
28 words
The method as claimed in claim 3 wherein said inert filler material is inert filler particles having a particle size in the range of 8 to 10 microns.
Claim 9
Dependent Claim
19 words
The method as claimed in claim 3 wherein said filler material is at least partially transparent to actinic radiation.
Claim 10
Dependent Claim
12 words
The method of claim 3 wherein said pigment particles comprise phosphorescent particles.
Claim 11
Dependent Claim
22 words
The method of claim 8 wherein the percent by weight of said phosphorescent particles is in the range of 20% to 50%.
Claim 12
Dependent Claim
25 words
The method as claimed in claim 9 wherein the quantity of said phosphorescent particles by total weight is in the range of 25% to 35%.
Claim 13
Independent Claim
157 words
A method of making a phosphorescent marker having a wax blend base comprising the steps of: (a) melting a wax blend; (b) adding a filler material to the melted wax blend; (c) milling said filler material and melted wax blend to form a uniform suspension of said filler material in said wax blend; (d) adding phosphorescent pigment particles in the size range of 5 to 20 microns to said milled filler and melted wax blend; (e) whipping said phosphorescent pigment particles and milled filler and melted wax blend to form a continuous, non-settling suspension of said phosphorescent pigment particles in said milled filler material and melted wax blend, said suspension having in the range of 10 to 30 percent by weight filler material and in the range of 10 to 50 percent by weight of said pigment particles; and (f) forming said whipped phosphorescent pigment particles and milled filler and melted wax blend into a desired shape.
Claim 14
Independent Claim
157 words
A method of making a phosphorescent marker having a wax blend base comprising the steps of: (a) melting a wax blend; (b) adding a filler material to the melted wax blend; (c) milling said filler material and melted wax blend to form a uniform suspension of said filler material in said wax blend; (d) adding phosphorescent pigment particles in the size range of 5 to 20 microns to said milled filler and melted wax blend; (e) whipping said phosphorescent pigment particles and milled filler and melted wax blend to form a continuous, non-settling suspension of said phosphorescent pigment particles in said milled filler material and melted wax blend, said suspension having in the range of 10 to 30 percent by weight filler material and in the range of 10 to 50 percent by weight of said pigment particles; and (f) forming said whipped phosphorescent pigment particles and milled filler and melted wax blend into a desired shape.
Claim 15
Dependent Claim
74 words
A phosphorescent marker comprising a whipped mixture of an inert milled filler and wax base blend, and phosphorescent particles, said filler being at least partially transparent to actinic radiation, said phosphorescent particles being in the size range of 5 to 20 microns and continuously suspended in said whipped mixture, said whipped mixture comprising between 10 and 30 percent by weight of said filler and between 10 and 50 percent by weight said phosphorescent particles.
Claim 16
Dependent Claim
74 words
A phosphorescent marker comprising a whipped mixture of an inert milled filler and wax base blend, and phosphorescent particles, said filler being at least partially transparent to actinic radiation, said phosphorescent particles being in the size range of 5 to 20 microns and continuously suspended in said whipped mixture, said whipped mixture comprising between 10 and 30 percent by weight of said filler and between 10 and 50 percent by weight said phosphorescent particles.
Claim 17
Dependent Claim
26 words
The phosphorescent marker as claimed in claim 12 wherein the percent by total weight of said phosphorescent particles is in the range of 205 to 50%.
Claim 18
Dependent Claim
29 words
The phosphorescent marker as claimed in claim 13 wherein said filler and wax blend includes an inert filler having particles in the size range of 8 to 10 microns.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |