Patent US4990013A successfully refreshed from Google Patents.
US4990013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glitter crayon
Assignee: Individual
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Filing: 1989-08-28
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Granted: 1991-02-05
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Expires: 2009-08-28
Abstract
Abstract An improved crayon composition is disclosed, comprising a base wax binder component having a melting point in excess of about 100 degrees Fahrenheit, from about 5.0 to about 50.0 weight percent of an emulsifying agent, and from about 0.01 to about 5.0 weight percent of a reflective flake.
Inventors
- 👤 Conrad L. Hejmanowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
C; C09; C09D; C09D13/00; B; B43; B43K; B43K19/00; B43K19/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
An improved crayon composition comprising from about 25 to about 50 weight percent stearic acid, from about 30 to about 65 weight percent paraffin wax, from about 1 to about 20 weight percent candelilla wax, from about 1 to about 20 weight percent carnauba wax and from about 0.01 to about 5.0 weight percent of a polymer reflective flake.
Claim 2
Dependent Claim
59 words
An improved crayon composition comprising from about 25 to about 50 weight percent stearic acid, from about 30 to about 65 weight percent paraffin wax, from about 1 to about 20 weight percent candelilla wax, from about 1 to about 20 weight percent carnauba wax and from about 0.01 to about 5.0 weight percent of a polymer reflective flake.
Claim 3
Dependent Claim
11 words
The composition of claim 1 comprising a polyethylene terephthalate reflective flake.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein said flake is from about 0.005 to about 0.01 square inches per side.
Claim 5
Dependent Claim
18 words
The composition of claim 1 additionally comprising at least one of a dye, pigment, fluorescent and strengthening agent.
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) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |