Patent US3322807A successfully refreshed from Google Patents.
US3322807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 4-bis-and 2, 4-bis-di-(triorganosilyl) but-1-enes
Assignee: Monsanto Co
•
Filing: 1960-07-13
•
Granted: 1967-05-30
•
Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 William K Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:48
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
AS A COMPOUND, 1,4-BIS(TRIPHENYLSILYL) BUT-1-ENE.
Claim 2
Dependent Claim
5 words
AS A COMPOUND, 1,4-BIS(TRIPHENYLSILYL) BUT-1-ENE.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |