Patent US2737460A successfully refreshed from Google Patents.
US2737460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of titanium pigments
Assignee: EIDP Inc
•
Filing: 1953-02-04
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Granted: 1956-03-06
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Expires: 1973-02-04
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:14
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/04; C09C3/041; C09C3/06; C09C3/08; C01; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE PREPARATION OF AN IMPROVED TITANIUM PIGMENT WHICH COMPRISES DRY GRINDING SAID PIGMENT IN THE PRESENCE OF FROM 0.05 TO 5 PARTS BY WEIGHT OF AN AEROGEL AND FROM 0.005 TO 0.5 PARTS BY WEIGHT OF A TRIALKANOL AMINE PER 100 PARTS BY WEIGHT OF THE PIGMENT.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE PREPARATION OF AN IMPROVED TITANIUM PIGMENT WHICH COMPRISES DRY GRINDING SAID PIGMENT IN THE PRESENCE OF FROM 0.05 TO 5 PARTS BY WEIGHT OF AN AEROGEL AND FROM 0.005 TO 0.5 PARTS BY WEIGHT OF A TRIALKANOL AMINE PER 100 PARTS BY WEIGHT OF THE 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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |