US2567724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysilthianes
Assignee: General Electric Co
•
Filing: 1950-11-29
•
Granted: 1951-09-11
•
Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 Leroy S Moody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:41
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0898
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A COMPOSITION OF MATTER COMPRISING A SILTHIANE SELECTED FROM THE CLASS CONSISTING OF (1) HEXAMETHYL CYCLOTRISILTHIANE AND (2) TETRAPHENYL CYCLODISILTHIANE.
Claim 2
Dependent Claim
20 words
A COMPOSITION OF MATTER COMPRISING A SILTHIANE SELECTED FROM THE CLASS CONSISTING OF (1) HEXAMETHYL CYCLOTRISILTHIANE AND (2) TETRAPHENYL CYCLODISILTHIANE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |