US2568672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl siloxane rubber
Assignee: Dow Silicones Corp
•
Filing: 1948-03-29
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Granted: 1951-09-18
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Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Warrick Earl Leathen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A COMPOSITION COMPRISING A LIQUID METHYLPOLYSILOXANE OF VISCOSITY ABOVE 1,000 CS., HAVING ON THE AVERAGE BETWEEN 1.75 AND 2.25 METHYL RADICALS PER SILICON ATOM, THERE BEING PRESENT IN SAID POLYSILOXANE AT LEAST 40 MOL PER CENT
References Cited (Backward Citations)
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Cited
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US2049507A
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US2409633A
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US2452416A
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Cited
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Cited
US2445794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |