US3015645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica powders
Assignee: Dow Silicones Corp
•
Filing: 1954-10-06
•
Granted: 1962-01-02
•
Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Leslie J Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:19
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C08; C08K; C08K9/00; C08K9/04; C08K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
THE METHOD PREPARING HYDROPHOBIC ORGANOSILICON POWDERS WHICH COMPRISES MIXING (1) AN ORGANOSILCON COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA RNSIX4-N AND
Claim 2
Independent Claim
25 words
THE METHOD PREPARING HYDROPHOBIC ORGANOSILICON POWDERS WHICH COMPRISES MIXING (1) AN ORGANOSILCON COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA RNSIX4-N AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |