Patent US2568672A successfully refreshed from Google Patents.
US2568672A
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Methyl siloxane rubber
Assignee: Dow Silicones Corp
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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
2026-10-27 10:42
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
US2011041A
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US2049507A
Cited
US2409633A
Cited
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US2460795A
Cited
US2481052A
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US2445794A
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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 |