US3194772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for copolymerizing tetrahydrofuran with an epoxide monomer
Assignee: Olin Corp
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Filing: 1962-09-21
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Granted: 1965-07-13
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 Samuel I Trotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:03
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR THE PRODUCTION OF COPOLYMERS WHICH COMPRISES COPOLYMERIZING TETRAHYDROFURAN WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BETA-PROPIOLACTONE AND VINYLCYCLOHEXANE DIOXIDE, IN THE PRESENCE OF B10H10(C(COCL))2.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE PRODUCTION OF COPOLYMERS WHICH COMPRISES COPOLYMERIZING TETRAHYDROFURAN WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BETA-PROPIOLACTONE AND VINYLCYCLOHEXANE DIOXIDE, IN THE PRESENCE OF B10H10(C(COCL))2.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |