US2891920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of organopolysiloxanes in aqueous emulsion
Assignee: Dow Silicones Corp
•
Filing: 1955-01-26
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Granted: 1959-06-23
•
Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 James F Hyde
- 👤 Jack R Wehrly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A METHOD WHICH COMPRISES POLYMERIZING AND COPOLYMERIZING ORGANOSILOXANES OF THE FORMULA
Claim 2
Independent Claim
11 words
A METHOD WHICH COMPRISES POLYMERIZING AND COPOLYMERIZING ORGANOSILOXANES 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) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |