US3663650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substantially transparent polydimethylsiloxane - polyalkylmethacrylate compositions and method for making same
Assignee: General Electric Co
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Filing: 1970-12-28
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Granted: 1972-05-16
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Expires: 1990-12-28
Abstract
Abstract A METHOD, AND BINARY POLYDIMETHYLSILOXANE-POLYALKYLMETHYACRYLATE BLOCK COPOLYMERS MADE BY SUCH METHOD ARE PROVIDED INVOLVING THE USE OF CERTAIN DILITHIO AROMATIC INITIATORS. THE TRANSPARENT BINARY POLYDIMETHYLSILOXANEPOLYALKYLMETHACRYLATE BLOCK COPOLYMERS CAN BE BLENDED WITH CLEAR POLYALKYLMETHACRYLATE PLASTICS TO PRODUCE SUBSTANTIALLY TRANSPARENT THERMOPLASTIC FILMS, SHEETS AND COATINGS HAVING IMPROVED SURFACE CHARACTERISTICS.
Inventors
- 👤 Peter C Juliano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:39
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |