Patent US2606879A successfully refreshed from Google Patents.
US2606879A
Expired / Lapsed
US
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Organopolysilanes
Assignee: Dow Silicones Corp
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Filing: 1949-06-15
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Granted: 1952-08-12
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Expires: 1969-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
POLYSILANES OF FROM A GREASE-LIKE TO A WAXLIKE CONSISTENCY, THE POLYMER UNITS OF WHICH ARE OF THE STRUCTURE R2SI= IN WHICH SUBSTANTIALLY ALL OF THE POLYMER UNITS ARE LINKED BY SILICON TO SILICON BONDING AND IN WHICH R IS ALKYL AND AT LEAST ONE R IN EACH UNIT IS A ALKYL CONTAINING AT LEAST TWO CARBON ATOMS.
Claim 2
Dependent Claim
57 words
POLYSILANES OF FROM A GREASE-LIKE TO A WAXLIKE CONSISTENCY, THE POLYMER UNITS OF WHICH ARE OF THE STRUCTURE R2SI= IN WHICH SUBSTANTIALLY ALL OF THE POLYMER UNITS ARE LINKED BY SILICON TO SILICON BONDING AND IN WHICH R IS ALKYL AND AT LEAST ONE R IN EACH UNIT IS A ALKYL CONTAINING AT LEAST TWO CARBON ATOMS.
References Cited (Backward Citations)
US2483972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |