US2717246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium dioxide pigment coated with a hydrous oxide and a polysiloxane
Assignee: Wyeth Holdings LLC
•
Filing: 1952-12-10
•
Granted: 1955-09-06
•
Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Roy H Kienle
- 👤 John W Eastes
- 👤 Theodore F Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/06; C09C3/063; C09C3/12; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2006/00; C01P2006/20; C01P2006/90; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
TITANIUM DIOXIDE PIGMENT PARTICLES COATED FIRST WITH BETWEEN ABOUT 0.1% AND 2.5% THEIR WEIGHT OF A WATERINSOLUBLE POYLVALENT METAL HYDROUS OXIDE AND THEN WITH BETWEEN ABOUT 0.005% AND 15% OF THEIR WEIGHT OF A THERMOCURED POLYORGANOSILOXANE, SAID POLYORGANOSILOXANE BEING THE HYDROLYSIS PRODUCT OF AT LEAST ONE SILANE OF THE FORMULA A2SIXY, WHEREIN A IS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF C1 AND H, X IS SELECTED FROM THE GROUP CONSISTING OF A AND Y, AND Y IS A HYDROCARBON RADICAL HAVING FAWER THAN 22 CARBON ATOMS,
Claim 2
Dependent Claim
88 words
TITANIUM DIOXIDE PIGMENT PARTICLES COATED FIRST WITH BETWEEN ABOUT 0.1% AND 2.5% THEIR WEIGHT OF A WATERINSOLUBLE POYLVALENT METAL HYDROUS OXIDE AND THEN WITH BETWEEN ABOUT 0.005% AND 15% OF THEIR WEIGHT OF A THERMOCURED POLYORGANOSILOXANE, SAID POLYORGANOSILOXANE BEING THE HYDROLYSIS PRODUCT OF AT LEAST ONE SILANE OF THE FORMULA A2SIXY, WHEREIN A IS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF C1 AND H, X IS SELECTED FROM THE GROUP CONSISTING OF A AND Y, AND Y IS A HYDROCARBON RADICAL HAVING FAWER THAN 22 CARBON ATOMS,
References Cited (Backward Citations)
US2467853A
Cited
US2387534A
Cited
US2441225A
Cited
US2440953A
Cited
US2610167A
Cited
US2563555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |