US2961425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroalkylsiloxane fluids
Assignee: Dow Silicones Corp
•
Filing: 1958-04-07
•
Granted: 1960-11-22
•
Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Ogden R Pierce
- 👤 George W Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:14
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A METHOD OF PREPARING LINEAR SILOXANE COPOLYMERS WHICH COMPRISES REACTING (1) A CYCLIC TRISILOXANE OF THE FORMULA
Claim 2
Independent Claim
17 words
A METHOD OF PREPARING LINEAR SILOXANE COPOLYMERS WHICH COMPRISES REACTING (1) A CYCLIC TRISILOXANE OF 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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |