US2505744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green pigment composition
Assignee: Wyeth Holdings LLC
•
Filing: 1946-03-07
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Granted: 1950-04-25
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Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Scalera Mario
- 👤 Robert E Brouillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:44
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A GREEN PIGMENT COMPOSITION HAVING AS ITS ONLY ESSENTIAL COLOR CONSTITUENT A BLEND A BLUE TO GREEN PHTHALOCYANINE PIGMENT AND A YELLOW ALPHA AROMATIC ACYLAMINO ANTHRAQUINONE, THE PROPORTIONS BEING FROM 90 TO 33% OF THE ANTHRAQUINONE PIGMENT AND 10 TO 66% OF THE PHTHALOCYANINE PIGMENT.
Claim 2
Dependent Claim
45 words
A GREEN PIGMENT COMPOSITION HAVING AS ITS ONLY ESSENTIAL COLOR CONSTITUENT A BLEND A BLUE TO GREEN PHTHALOCYANINE PIGMENT AND A YELLOW ALPHA AROMATIC ACYLAMINO ANTHRAQUINONE, THE PROPORTIONS BEING FROM 90 TO 33% OF THE ANTHRAQUINONE PIGMENT AND 10 TO 66% OF THE PHTHALOCYANINE PIGMENT.
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) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |