Patent US3087908A successfully refreshed from Google Patents.
US3087908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous mixture comprising a polycarbonate and an organopolysiloxane
Assignee: General Electric Co
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Filing: 1961-01-12
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Granted: 1963-04-30
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Expires: 1981-01-12
Abstract
No abstract record available.
Inventors
- 👤 David W Caird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A RESINOUS MATERIAL COMPRISING A MIXTURE OF (1) ORGANOPOLYSILOXANE AND (2) A POLYCARBONATE MATERIAL DERIVED FROM DIHYDRIC PHENOL IN WHICH THE CARBONATE GROUP IS ATTACHED DIRECTLY TO A CARBON ATOM OF AN AROMATIC RING, THE ORGANOPOLYSILOXANE BEING PRESENT IN AMOUNTS UP TO ABOUT 400 PARTS PER MILLION, BY WEIGHT, OF POLYCARBONATE MATERIAL.
Claim 2
Dependent Claim
52 words
A RESINOUS MATERIAL COMPRISING A MIXTURE OF (1) ORGANOPOLYSILOXANE AND (2) A POLYCARBONATE MATERIAL DERIVED FROM DIHYDRIC PHENOL IN WHICH THE CARBONATE GROUP IS ATTACHED DIRECTLY TO A CARBON ATOM OF AN AROMATIC RING, THE ORGANOPOLYSILOXANE BEING PRESENT IN AMOUNTS UP TO ABOUT 400 PARTS PER MILLION, BY WEIGHT, OF POLYCARBONATE MATERIAL.
References Cited (Backward Citations)
US2999835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |