US2852406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment composition and process for its production
Assignee: Armour and Co
•
Filing: 1954-11-16
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Granted: 1958-09-16
•
Expires: 1974-11-16
Abstract
No abstract record available.
Inventors
- 👤 Werner L Riegler
- 👤 Richard L Betcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C09; C09C; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2004/80; C01P2006/00; C01P2006/19; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PIGMENT PARTICLE UNIFORMLY COATED WITH FROM 1/2 TO 4 WEIGHT PERCENT OF A WATER-INSOLUBLE, OIL SOLUBLE DIACID SALT OF A N-ALIPHATIC ALKYLENE DIAMINE, SAID DIAMINE HAVING THE GENERAL FORMULA R-NH-(CH2)X-NH2 AND SAID ACID IS SELECTED FROM THE GROUP CONSISTING OF RCOOH AND R-NH-A-COOH WHEREIN R IN EACH FORMULA IS AN ALIPHATIC HYDROCARBON RADICAL HAVING FROM 12 TO 22 CARBON ATOMS, X IS AN INTEGER OF FROM 2 TO 10, AND A IS A DIVALENT ALIPHATIC HYDROCARBON RADICAL HAVING FROM 2 TO 3 CARBON ATOMS.
Claim 2
Dependent Claim
85 words
A PIGMENT PARTICLE UNIFORMLY COATED WITH FROM 1/2 TO 4 WEIGHT PERCENT OF A WATER-INSOLUBLE, OIL SOLUBLE DIACID SALT OF A N-ALIPHATIC ALKYLENE DIAMINE, SAID DIAMINE HAVING THE GENERAL FORMULA R-NH-(CH2)X-NH2 AND SAID ACID IS SELECTED FROM THE GROUP CONSISTING OF RCOOH AND R-NH-A-COOH WHEREIN R IN EACH FORMULA IS AN ALIPHATIC HYDROCARBON RADICAL HAVING FROM 12 TO 22 CARBON ATOMS, X IS AN INTEGER OF FROM 2 TO 10, AND A IS A DIVALENT ALIPHATIC HYDROCARBON RADICAL HAVING FROM 2 TO 3 CARBON ATOMS.
References Cited (Backward Citations)
US2126925A
Cited
US2192956A
Cited
US2442972A
Cited
US2728737A
Cited
US2728682A
Cited
US2736658A
Cited
US2709160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |