Patent US2983746A successfully refreshed from Google Patents.
US2983746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Difluoroorganochlorosilanes
Assignee: Dow Silicones Corp
•
Filing: 1958-06-04
•
Granted: 1961-05-09
•
Expires: 1978-06-04
Abstract
No abstract record available.
Inventors
- 👤 Donald D Smith
- 👤 Eldon E Frisch
- 👤 Ogden R Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:25
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C08; C08G; C08G77/00; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/657
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A SILANE OF THE FORMULA
Claim 2
Dependent Claim
5 words
A SILANE OF THE FORMULA
Claim 3
Dependent Claim
10 words
A SILOXANE COMPOSITION CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA
Claim 4
Dependent Claim
10 words
A SILOXANE COMPOSITION CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA
References Cited (Backward Citations)
US2637738A
Cited
US2860152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |