US3425855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated titanium dioxide pigment
Assignee: Dow Chemical Co
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Filing: 1966-03-17
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Granted: 1969-02-04
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Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jelks Barksdale
- 👤 William P Coker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; B; B82; B82Y; B82Y30/00; C09C3/00; C09C3/06; C09C3/063; C09C3/10; C01; C01P; C01P2004/00; C01P2004/10; C01P2004/54; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A COATED RUTILE TITANIUM DIOXIDE PIGMENT COMPOSITION COMPRISING A RUTILE TITANIUM DIOXIDE PIGMENT HAVING A SURFACE COATING OF FROM ABOUT 0.1 TO ABOUT 2 WEIGHT PERCENT AS BASED ON THE WEIGHT OF SAID TITANIUM DIOXIDE OF A POLYETHYLENIMINE BASED MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENIMINIE AND A REACTION PRODUCT OF A POLYETHYLENIMINIE WITH FROM ABOUT 10 TO ABOUT 150 PERCENT BY WEIGHT BASED ON THE WEIGHT OF POLYETHYLENIMINE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, ETHYLENE OXIDE, PROPYLENE OXIDE AND ACRYLAMIDE.
Claim 2
Dependent Claim
86 words
A COATED RUTILE TITANIUM DIOXIDE PIGMENT COMPOSITION COMPRISING A RUTILE TITANIUM DIOXIDE PIGMENT HAVING A SURFACE COATING OF FROM ABOUT 0.1 TO ABOUT 2 WEIGHT PERCENT AS BASED ON THE WEIGHT OF SAID TITANIUM DIOXIDE OF A POLYETHYLENIMINE BASED MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENIMINIE AND A REACTION PRODUCT OF A POLYETHYLENIMINIE WITH FROM ABOUT 10 TO ABOUT 150 PERCENT BY WEIGHT BASED ON THE WEIGHT OF POLYETHYLENIMINE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, ETHYLENE OXIDE, PROPYLENE OXIDE AND ACRYLAMIDE.
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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |