US3575893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers containing phenyldimethyl carbinol groups
Assignee: Bayer AG
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Filing: 1968-06-25
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Granted: 1971-04-20
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Expires: 1988-06-25
Abstract
Abstract COPOLYMERS CONTAINING PHENYLDIMETHYL CARBINOL GROUPS, CROSSLINKED PLASTICS COMPRISING SAID COPOLYMERS AND FOAMS OF THE CROSSLINKED COPOLYMERS. THE PROCESSES FOR PREPARING THE COPOLYMERS, CROSSLINKED COPOLYMERS AND FOAMS ARE ALSO DISCLOSED.
Inventors
- 👤 Hans-Josef Buysch
- 👤 Heinrich Krimm
- 👤 Hermann Schnell
- 👤 Georg Malamet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:29
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/02; C08J; C08J9/00; C08J9/04; C08J2357/00; C08J2357/04
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |