Patent US2731485A successfully refreshed from Google Patents.
US2731485A
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Polysiloxanes produced by the reaction of dialkyldialkoxysilanes in the presence of aluminum or boron halides
Assignee: Union Carbide Corp
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Filing: 1949-07-26
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Granted: 1956-01-17
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Expires: 1969-07-26
Abstract
No abstract record available.
Inventors
- 👤 George H Wagner
- 👤 Charles E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:56
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS FOR PREPARING POLYSILOXANES WHICH CONSISTS OF HEATING SUBSTITUTED SILANES OF THE TYPE:
Claim 2
Dependent Claim
14 words
A PROCESS FOR PREPARING POLYSILOXANES WHICH CONSISTS OF HEATING SUBSTITUTED SILANES OF THE TYPE:
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |