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Patent US2552247A successfully refreshed from Google Patents.
US2552247A
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Preparation of organopolysiloxanes
Assignee: General Electric Co
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Filing: 1949-04-08
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Granted: 1951-05-08
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Expires: 1969-04-08
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Wormuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:37
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08L; C08L83/00; C08L83/04; C08G77/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS WHICH COMPRISES (1) FORMING A MIXTURE OF INGREDIENTS COMPRISING (A) AN ORGANOPOLYSILOXANE CONTAINING AN AVERAGE OF FROM 1.9 TO 2.0, INCLUSIVE, ORGANIC GROUPS PER SILICON ATOM AND (B) A LIQUID COMPRISING A LINEAR ORGANOPOLYSILOXANE HAVING AT LEAST 5 SILICON ATOMS IN THE POLYSILOXANE CHAIN AND CONTAINING TWO TERMINAL
Claim 2
Dependent Claim
50 words
THE PROCESS WHICH COMPRISES (1) FORMING A MIXTURE OF INGREDIENTS COMPRISING (A) AN ORGANOPOLYSILOXANE CONTAINING AN AVERAGE OF FROM 1.9 TO 2.0, INCLUSIVE, ORGANIC GROUPS PER SILICON ATOM AND (B) A LIQUID COMPRISING A LINEAR ORGANOPOLYSILOXANE HAVING AT LEAST 5 SILICON ATOMS IN THE POLYSILOXANE CHAIN AND CONTAINING TWO TERMINAL
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |