US2671099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hexaorganoethynyl silicon derivatives
Assignee: General Electric Co
•
Filing: 1952-03-15
•
Granted: 1954-03-02
•
Expires: 1972-03-15
Abstract
No abstract record available.
Inventors
- 👤 Kurt C Frisch
- 👤 Robert B Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOSITION CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A COMPOSITION CORRESPONDING TO THE GENERAL FORMULA:
References Cited (Backward Citations)
US2082569A
Cited
US2551924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |