Patent US3360489A successfully refreshed from Google Patents.
US3360489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing elements comprising colloidal thermoplastic resin and metallic soap
Assignee: Empire Enterprises Inc
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Filing: 1965-10-19
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Granted: 1967-12-26
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Grossman Harold
- 👤 Wiser Verlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:10
CPC Classifications
C; C09; C09D; C09D13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION FOR A WRITING ELEMENT FOR PENCILS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A SUBSTANTIALLY WATER INSOLUBLE METALLIC SOAP, A THERMOPLASTIC RESIN BINDER SOLID AT ROOM TEMPERATURE HAVING COLLOIDAL PARTICLE SIZE IN SUFFICIENT AMOUNT TO FURNISH AN EXTRUDABLE WRITING ELEMENT, AND A MARKING MATERIAL SELECTED FROM THE GROUP CONSISTING OF A GRAPHITE, A PIGMENT AND A DYE, THE PIGMENT AND THE DYE HAVING A MINERAL FILLER ASSOCIATED THEREWITH.
Claim 2
Dependent Claim
68 words
A COMPOSITION FOR A WRITING ELEMENT FOR PENCILS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A SUBSTANTIALLY WATER INSOLUBLE METALLIC SOAP, A THERMOPLASTIC RESIN BINDER SOLID AT ROOM TEMPERATURE HAVING COLLOIDAL PARTICLE SIZE IN SUFFICIENT AMOUNT TO FURNISH AN EXTRUDABLE WRITING ELEMENT, AND A MARKING MATERIAL SELECTED FROM THE GROUP CONSISTING OF A GRAPHITE, A PIGMENT AND A DYE, THE PIGMENT AND THE DYE HAVING A MINERAL FILLER ASSOCIATED THEREWITH.
References Cited (Backward Citations)
US2988784A
Cited
US2566516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |