US2640818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thienyl-substituted polysiloxanes
Assignee: General Electric Co
•
Filing: 1949-06-25
•
Granted: 1953-06-02
•
Expires: 1969-06-25
Abstract
No abstract record available.
Inventors
- 👤 Philip D George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:56
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOSITION OF MATTER COMPRISING AN ORGANO POLYSILOXANE IN WHICH THE ORGANIC GROUPS ARE ALL ATTACHED TO THE SILICON ATOMS OF THE POLYSILOXANE BY CARBON-SILICON LINKAGES AND THE ORGANIC GROUPS CONSIST OF THIENYL RADICALS AND A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF METHYL AND PHENYL RADICALS.
Claim 2
Dependent Claim
49 words
A COMPOSITION OF MATTER COMPRISING AN ORGANO POLYSILOXANE IN WHICH THE ORGANIC GROUPS ARE ALL ATTACHED TO THE SILICON ATOMS OF THE POLYSILOXANE BY CARBON-SILICON LINKAGES AND THE ORGANIC GROUPS CONSIST OF THIENYL RADICALS AND A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF METHYL AND PHENYL RADICALS.
References Cited (Backward Citations)
US2238669A
Cited
US2486162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |