US3074800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing or painting substance for ball point pens and similar devices
Assignee: DOLEO S A
•
Filing: 1959-08-03
•
Granted: 1963-01-22
•
Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Germann Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/16; C09D11/18; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A THIXOTROPIC WRITING SUBSTANCE FOR BALL POINT PENS TIONAL BALL POINT PEN INK, 10 PARTS BY WEIGHT OF SILICA GEL PARTICLES OF LESS THAN 0.02 MICRON, 20 PARTS BY WEIGHT OF A WAX SELECTED FROM THE GROUP CONSISTING OF CARNAUBA WAX AND POLETHYLENE GLYCOL WAX, SAID SILICA GEL AND WAX BEING INTIMATELY MIXED IN A PROPORTION WHEREBY THE WRITING SUBSTANCE HAS A VISCOSITY OF BETWEEN 1000-3000 POISES AT 68*F.
Claim 2
Dependent Claim
69 words
A THIXOTROPIC WRITING SUBSTANCE FOR BALL POINT PENS TIONAL BALL POINT PEN INK, 10 PARTS BY WEIGHT OF SILICA GEL PARTICLES OF LESS THAN 0.02 MICRON, 20 PARTS BY WEIGHT OF A WAX SELECTED FROM THE GROUP CONSISTING OF CARNAUBA WAX AND POLETHYLENE GLYCOL WAX, SAID SILICA GEL AND WAX BEING INTIMATELY MIXED IN A PROPORTION WHEREBY THE WRITING SUBSTANCE HAS A VISCOSITY OF BETWEEN 1000-3000 POISES AT 68*F.
References Cited (Backward Citations)
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |