US2561177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-containing rubber compositions
Assignee: Dow Silicones Corp
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Filing: 1949-04-21
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Granted: 1951-07-17
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Expires: 1969-04-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/12; C08C19/25; C08C19/30; C08C19/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A HYDRO-POLYALKOXYSILYL ADDITON PRODUCT OF A RUBBER HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, BUTTA PERCHA, BALATA AND ELASTOMERIC BUTADIENE-STYRENE COPOLYMERS, WHICH ADDITION PRODUCT CONTAINS RADICALS OF THE FORMULA SIR(OR'')2, WHEREIN R REPRESENTS A RADICAL OF THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS AND R'' IS AN ALKYL RADICAL FROM METHYL TO PROPYL, SAID RADICALS BEING BONDED TO CARBON RADICALS OF THE RUBBER HYDROCARBON BY CARBON TO SILICON LINKAGES.
Claim 2
Dependent Claim
72 words
A HYDRO-POLYALKOXYSILYL ADDITON PRODUCT OF A RUBBER HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, BUTTA PERCHA, BALATA AND ELASTOMERIC BUTADIENE-STYRENE COPOLYMERS, WHICH ADDITION PRODUCT CONTAINS RADICALS OF THE FORMULA SIR(OR'')2, WHEREIN R REPRESENTS A RADICAL OF THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS AND R'' IS AN ALKYL RADICAL FROM METHYL TO PROPYL, SAID RADICALS BEING BONDED TO CARBON RADICALS OF THE RUBBER HYDROCARBON BY CARBON TO SILICON LINKAGES.
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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |