Patent US3146248A successfully refreshed from Google Patents.
US3146248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endblocked polysilanes
Assignee: Dow Silicones Corp
•
Filing: 1960-10-25
•
Granted: 1964-08-25
•
Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Richard W Alsgaard
- 👤 Beck Henry Nelson
- 👤 Edwin P Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:11
CPC Classifications
C; C06; C06B; C06B43/00; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896; C08; C08G; C08G77/00; C08G77/60; Y; Y10; Y10S; Y10S149/00; Y10S149/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |