US2668151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophobic inorganic particulate materials
Assignee: 3M Co
•
Filing: 1948-06-12
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Granted: 1954-02-02
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Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Jr George Wesley Pedlow
- 👤 Jr Carl Shelley Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3081; C07; C07F; C07F7/00; C07F7/02; C07F7/025; C01; C01P; C01P2006/00; C01P2006/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
HYDORPHOBIC SILICEOUS POWDER MATERIAL COMPRISING A NORMALLY HYDROPHILIC SILICEOUS POWDER RENDERED HYDROPHOBIC BY TREATMENT WITH A TERTIARY CARBINOXY CHLOROSILANE, THE CHLORINE BEING HYDROLYZED OUT OF THE MOLECULE OF SAID TERTIARYCARBINOXY CHLOROSILANE DURING SAID TREATMENT, LEAVING A HYDROPHOBIC TREATMENT INCLUDING TERTIARY-CRBINOXY GROUPS AND SILICON ON SAID POWDER.
Claim 2
Dependent Claim
46 words
HYDORPHOBIC SILICEOUS POWDER MATERIAL COMPRISING A NORMALLY HYDROPHILIC SILICEOUS POWDER RENDERED HYDROPHOBIC BY TREATMENT WITH A TERTIARY CARBINOXY CHLOROSILANE, THE CHLORINE BEING HYDROLYZED OUT OF THE MOLECULE OF SAID TERTIARYCARBINOXY CHLOROSILANE DURING SAID TREATMENT, LEAVING A HYDROPHOBIC TREATMENT INCLUDING TERTIARY-CRBINOXY GROUPS AND SILICON ON SAID POWDER.
References Cited (Backward Citations)
US2194683A
Cited
US2306222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |