US2950285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coloring matter for ball-pen inks
Assignee: EIDP Inc
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Filing: 1958-06-30
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Granted: 1960-08-23
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Miller Calvin Quentin
- 👤 Ranson William Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:44
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/02; C09D; C09D11/00; C09D11/16; C09D11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A COMPOSITION OF MATTER USEFUL AS COLORING MATTER IN BALL-PEN INKS, COMPRISING THE SALT OF A POLYSULFONATED PHTHALOCYANINE COMPOUND AND VICTORIA PURE BLUE BO, SAID POLYSULFONATED PHTHALOCYANIE COMPOUND BEING A PHTHALOCYANINE COMPOUND CONTAINING ON THE AVERAGE FROM 2 TO 4 SULFO GROUPS PER MOLECULE AND WHOSE PHTHALOCYANINE NUCLEUS IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF COPPER PHTHALOCYANINE, NICKEL PHTHALOCYANINE, COBALT PHTHALOCYANINE, HALOGENATED DERIVATIVES OF THESE THREE COMPOUNDS CONTAINING PER MOLECULE NOT MORE THAN ONE ATOM OF HALOGEN FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, COPPER-TETRAAMINO PHTHALOCYANINE AND METAL-FREE PHTHALOCYANINE.
Claim 2
Dependent Claim
92 words
A COMPOSITION OF MATTER USEFUL AS COLORING MATTER IN BALL-PEN INKS, COMPRISING THE SALT OF A POLYSULFONATED PHTHALOCYANINE COMPOUND AND VICTORIA PURE BLUE BO, SAID POLYSULFONATED PHTHALOCYANIE COMPOUND BEING A PHTHALOCYANINE COMPOUND CONTAINING ON THE AVERAGE FROM 2 TO 4 SULFO GROUPS PER MOLECULE AND WHOSE PHTHALOCYANINE NUCLEUS IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF COPPER PHTHALOCYANINE, NICKEL PHTHALOCYANINE, COBALT PHTHALOCYANINE, HALOGENATED DERIVATIVES OF THESE THREE COMPOUNDS CONTAINING PER MOLECULE NOT MORE THAN ONE ATOM OF HALOGEN FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, COPPER-TETRAAMINO PHTHALOCYANINE AND METAL-FREE PHTHALOCYANINE.
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |