US2719092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment production
Assignee: Individual
•
Filing: 1951-10-02
•
Granted: 1955-09-27
•
Expires: 1971-10-02
Abstract
No abstract record available.
Inventors
- 👤 Frank A Grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:50
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0081; C01; C01P; C01P2002/00; C01P2002/80; C01P2002/84; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PIGMENT COMPRISING (A) LAMPBLACK, (B) AN AZINE COMPOUND OF THE CLASS CONSISTING OF DIHYDROXYL-NAPTHALAZINE, DI-FURFURALDEHYDE HYDRAZINE, DICINNAMALDEHYDE HYDRAZINE, N - (2,4-DIHYDROXY - 1,3,5 - TRIAZYL - (6)) - DEHYDROTHIO-TOLUIDINE SULFONIC ACID, AND BIS-(2,4-DIHYDROXY-1,3,5-TRIAZYL (6))-DIAMINO-DIPHENYL UREA DISULFONIC ACID, (C) A YELLOW PIGMENT OF THE CLASS CONSISTING OF PRIMROSE LEAD CCHROMATE, LEMON LEAD CHROMATE, MEDIUM LEAD CHROMATE, YELLOW OXIDES OF IRON, CADMIUM YELLOW, ARSENIC YELLOW, NAPLES YELLOW, TURNER''S YELLOW AND AUREOLIN, THE WEIGHT RATIO OF (A) TO (B) PLUS (C) BEING FROM 2:3 TO 3:2, THE WEIGHT RATIO OF (B) TO (C) BEING FROM 5:1 TO 1:5.
Claim 2
Dependent Claim
96 words
A PIGMENT COMPRISING (A) LAMPBLACK, (B) AN AZINE COMPOUND OF THE CLASS CONSISTING OF DIHYDROXYL-NAPTHALAZINE, DI-FURFURALDEHYDE HYDRAZINE, DICINNAMALDEHYDE HYDRAZINE, N - (2,4-DIHYDROXY - 1,3,5 - TRIAZYL - (6)) - DEHYDROTHIO-TOLUIDINE SULFONIC ACID, AND BIS-(2,4-DIHYDROXY-1,3,5-TRIAZYL (6))-DIAMINO-DIPHENYL UREA DISULFONIC ACID, (C) A YELLOW PIGMENT OF THE CLASS CONSISTING OF PRIMROSE LEAD CCHROMATE, LEMON LEAD CHROMATE, MEDIUM LEAD CHROMATE, YELLOW OXIDES OF IRON, CADMIUM YELLOW, ARSENIC YELLOW, NAPLES YELLOW, TURNER''S YELLOW AND AUREOLIN, THE WEIGHT RATIO OF (A) TO (B) PLUS (C) BEING FROM 2:3 TO 3:2, THE WEIGHT RATIO OF (B) TO (C) BEING FROM 5:1 TO 1:5.
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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |