US3285861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline poly(epoxide)s
Assignee: Hercules LLC
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Filing: 1962-12-27
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Granted: 1966-11-15
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:47
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A CRYSTALLINE LINEAR HOMOPOLYMER OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF 1,2-EPOXY-3-METHYLBUTANE, 1,2-EPOXY-3,3-DIMETHYLBUTANE, AND 1,2-EPOXY-4,4DIMETHYLPENTANE, SAID POLYMERS BEING CHARACTERIZED BY EXHIBITING A CRYSTALLINE-TYPE X-RAY DIFFRACTION POWDER PATTERN AND HAVING A MELTING POINT BETWEEN ABOUT 38*C. AND ABOUT 166*C.
Claim 2
Dependent Claim
40 words
A CRYSTALLINE LINEAR HOMOPOLYMER OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF 1,2-EPOXY-3-METHYLBUTANE, 1,2-EPOXY-3,3-DIMETHYLBUTANE, AND 1,2-EPOXY-4,4DIMETHYLPENTANE, SAID POLYMERS BEING CHARACTERIZED BY EXHIBITING A CRYSTALLINE-TYPE X-RAY DIFFRACTION POWDER PATTERN AND HAVING A MELTING POINT BETWEEN ABOUT 38*C. AND ABOUT 166*C.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |