Patent US3335830A successfully refreshed from Google Patents.
US3205085A
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Sodium carboxymethylcellulose modified tio2 pigment and process of making same
Assignee: EIDP Inc
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Filing: 1961-08-25
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Granted: 1965-09-07
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Expires: 1981-08-25
Abstract
No abstract record available.
Inventors
- 👤 Lionel J Bailin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69; C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/04; C09C3/041; C09C3/10; D21H17/675; C01; C01P; C01P2004/00; C01P2004/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR PRODUCING AN IMPROVED TITANIUM DIOXIDE PIGMENT COMPRISING IMPACT MILLING A DRY MIXTURE OF TITANIUM DIOXIDE AND ABOUT FROM 0.5 TO 10% BY WEIGHT, BASED ON THE MIXTURE, OF WATER-SOLUBLE SODIUM CARBOXYMETHYLLCELLULOSE HAVING A DEGREE OF SUBSTITUTION OF 0.4 TO .85.
Claim 2
Dependent Claim
43 words
A PROCESS FOR PRODUCING AN IMPROVED TITANIUM DIOXIDE PIGMENT COMPRISING IMPACT MILLING A DRY MIXTURE OF TITANIUM DIOXIDE AND ABOUT FROM 0.5 TO 10% BY WEIGHT, BASED ON THE MIXTURE, OF WATER-SOLUBLE SODIUM CARBOXYMETHYLLCELLULOSE HAVING A DEGREE OF SUBSTITUTION OF 0.4 TO .85.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |