US3445267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of glass with silsesquioxanes to improve durability of subsequent silicone treatments to washing
Assignee: Dow Silicones Corp
•
Filing: 1966-01-12
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Granted: 1969-05-20
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Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Douglas K Layne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C03; C03C; C03C17/00; C03C17/28; C03C17/30; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C08G; C08G77/00; C08G77/04; C08G77/045; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2891920A
Cited
US2836611A
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US2923633A
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US3061567A
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US3162614A
Cited
US3234179A
Cited
US3377309A
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US3294725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |