US2504388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane compositions
Assignee: Dow Silicones Corp
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Filing: 1949-06-11
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Granted: 1950-04-18
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Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 Orville A Braley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:50
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10798; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/20; C08G77/70; C08K; C08K5/00; C08K5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A COMPOSITION OF MATTER COMPOSED ESSENTIALLY OF A SILOXANE RESIN HAVING ON THE AVERAGE FROM 1 TO 1.5 ORGANIC RADICALS PER SILICON ATOM SAID RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS, FROM 0.01 PERCENT TO 0.1 PERCENT BY WEIGHT LEAD 2-ETHYL HEXOATE BASED ON THE WEIGHT OF THE SILOXANE, AND FROM 0.5 PERCENT TO 1.0 PERCENT BY WEIGHT DIBUTYL TIN DIACETATE BASED ON THE WEIGHT OF THE SILOXANE.
Claim 2
Dependent Claim
73 words
A COMPOSITION OF MATTER COMPOSED ESSENTIALLY OF A SILOXANE RESIN HAVING ON THE AVERAGE FROM 1 TO 1.5 ORGANIC RADICALS PER SILICON ATOM SAID RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS, FROM 0.01 PERCENT TO 0.1 PERCENT BY WEIGHT LEAD 2-ETHYL HEXOATE BASED ON THE WEIGHT OF THE SILOXANE, AND FROM 0.5 PERCENT TO 1.0 PERCENT BY WEIGHT DIBUTYL TIN DIACETATE BASED ON THE WEIGHT OF THE SILOXANE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |