US2779776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing siloxane fluids
Assignee: Dow Silicones Corp
•
Filing: 1954-04-29
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Granted: 1957-01-29
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
- 👤 Gust J Kookootsedes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/10; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A METHOD OF PREPARING SILOXANES OF CONTROLLED VISCOSITY WHICH COMPRISES MAINTAINING IN CONTACT WITH EACH OTHER AN ORGANOPOLYSILOXANE HAVING THE UNIT FORMULA
Claim 2
Independent Claim
22 words
A METHOD OF PREPARING SILOXANES OF CONTROLLED VISCOSITY WHICH COMPRISES MAINTAINING IN CONTACT WITH EACH OTHER AN ORGANOPOLYSILOXANE HAVING THE UNIT FORMULA
References Cited (Backward Citations)
US2382082A
Cited
US2416503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |