Patent US1733736A successfully refreshed from Google Patents.
Patent US2877255A successfully refreshed from Google Patents.
US2877255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Branched siloxanes
Assignee: Dow Silicones Corp
•
Filing: 1956-11-29
•
Granted: 1959-03-10
•
Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:54
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOSITION HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOSITION HAVING THE FORMULA
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |