US2931786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siloxane coating composition
Assignee: Dow Silicones Corp
•
Filing: 1957-04-18
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Granted: 1960-04-05
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
- 👤 John H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/61
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER CONSISTING ESSENTIALLY OF FROM 45 TO 55 MOL PERCENT GAMMAHYDROXYPROPYLMETHYLSILOXANE, FROM 35 TO 55 MOL PERCENT PHENYLMETHYLSILOXANE AND UP TO 15 MOL PERCENT OF A SILOXANE OF THE FORMULA RSIO1.5 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS. .. 2. A CURED, RESINOUS MATERIAL COMPRISING THE REACTION PRODUCT OF THE COMPOSITION OF CLAIM 1 AND AN ORGANIC ISOCYANATE SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON ISOCYANATES AND HALOGENOHYDROCARBON ISOCYANATES AND HAVING AT LEAST TWO ISOCYANATE GROUPS IN THE MOLECULE.
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |