Patent US3424779A successfully refreshed from Google Patents.
US3424779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopolysiloxanes substituted with trialkylsilylphenyl groups
Assignee: Individual
•
Filing: 1966-11-21
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Granted: 1969-01-28
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Tse C Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:40
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A CYCLOTRISILOXANE HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A CYCLOTRISILOXANE HAVING THE FORMULA:
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |